Hiii I am preparing for exam of Plastic Surgery and I am giving you the name of topic and you will give me following and remember, add as much images as possible and also use standard books and in the end crisp point or crux flow chart of management. Now the sequence you will give me is first demography mention if any most common or least common thing is there , causes like genetic and environmental, clinical features and any classification based on etiology or features, with whichever investigation needed, tell about when to do it and when not to do it and also specific finding images then different surgery and it’s diagram then indications contraindications limitations and surgical steps and try as much as images use standard books and try to explain things and take simplest things in count and also add specific investigation or any other charts are there add them AND THE TOPIC IS Hypospadias

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hypospadias surgical repair techniques outcomes

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I now have comprehensive material from multiple standard textbooks (Campbell-Walsh Urology, Bailey & Love, Hinman's Atlas, The Developing Human, Schwartz's Surgery) plus clinical images. Let me now compile the complete, exam-focused answer:

🔬 HYPOSPADIAS - Complete Exam Guide for Plastic Surgery

Sources: Campbell-Walsh Urology (5th Ed), Bailey & Love's Surgery (28th Ed), Hinman's Atlas of Urologic Surgery, The Developing Human (Moore & Persaud), Schwartz's Principles of Surgery

1. DEMOGRAPHY & EPIDEMIOLOGY

Parameter	Fact
Incidence	1 in 125-300 male live births
Most common congenital abnormality	Of the urethra (MOST COMMON)
Most common type	Glanular hypospadias
Distal types	Account for ~70% of all cases
Glanular + Penile	~80% of all cases together
Least common / most severe	Perineal hypospadias
Perineal type	Only 1% - associated with bifid scrotum + ambiguous genitalia
Familial risk	Father affected → 8% risk in son; sibling affected → 14% risk
Trend	Incidence increasing in developed countries (possible endocrine disruptor link)

Exam crux: Hypospadias is the MOST COMMON congenital urethral anomaly. Glanular type = MOST COMMON. Perineal = LEAST COMMON but MOST SEVERE.

2. EMBRYOLOGY & PATHOGENESIS

Normal urethral development:

Urethral folds fuse in the midline (ventral) under androgen stimulation between weeks 8-16 of gestation
The spongy (penile) urethra forms by fusion of urethral folds
The glanular urethra forms separately by canalization of the ectodermal cord
Complete development depends on testosterone and its conversion to DHT (5-alpha reductase)

What goes wrong in hypospadias:

Failure of canalization of the ectodermal cord in the glans (→ glanular hypospadias)
Failure of fusion of the urethral folds (→ penile/proximal hypospadias)
Both mechanisms together → complete ventral hypoplasia with chordee

(The Developing Human, Moore & Persaud)

3. ETIOLOGY

Genetic Factors

Polygenic/multifactorial inheritance pattern
Associated genes: SRD5A2 (5-alpha reductase 2), AR (androgen receptor), ATF3, MAMLD1, FGF8, FGF10, BMP7, MID1, CXorf6
Monozygotic twins: 18% concordance (not 100% → environmental component)
Family history present in ~7-10% of cases

Hormonal/Endocrine Factors

Inadequate androgen production by fetal testes
Inadequate androgen receptor sensitivity (partial androgen insensitivity)
5-alpha reductase deficiency → inability to convert T → DHT
Maternal progestagen/estrogen exposure during pregnancy

Environmental Factors (Endocrine Disruptors)

Pesticides (DDT, DDE, vinclozolin) - anti-androgenic
Phthalates (plastics industry)
Phytoestrogens (soy-based foods)
Maternal obesity, preeclampsia, placental insufficiency
ART (Assisted Reproductive Techniques) - doubles the risk
Low birth weight / prematurity

Associated Conditions (exam favourite!)

Condition	Association
Cryptorchidism	9% of hypospadias cases
Inguinal hernia	9% of cases
Disorders of Sex Development (DSD)	Severe hypospadias + cryptorchidism = investigate for DSD
CAH	Perineal hypospadias in virilized females

EXAM KEY: If perineal hypospadias + bilateral cryptorchidism + micropenis → ALWAYS investigate for DSD/intersex

4. CLINICAL FEATURES - THE TRIAD

All three features are pathognomonic:

Feature	Description
1. Ectopic meatus	Ventrally placed urethral meatus, proximal to normal position
2. Ventral chordee	Ventral penile curvature due to fibrous tissue replacing spongiosum
3. Dorsal hood / incomplete prepuce	Foreskin present dorsally but absent ventrally (hooded foreskin)

Note: In mild distal cases, chordee may be absent. The meatus + hooded foreskin may be the only findings.

Additional Features

Incomplete foreskin (dorsal hood)
Bifid scrotum (severe cases)
Penoscrotal transposition (severe cases)
Urethral dimple / blind pit at normal meatal site
Downward deflection of urinary stream
Spraying of urine (40-50%)
Post-void dribbling (20-40%)

5. CLASSIFICATION

Anatomical / By Meatal Position (Most Used)

Classification of Hypospadias - Bailey & Love

Fig: Hypospadias classification diagram (Bailey & Love, 28th Ed)

Type	Meatal Position	Frequency
Glanular	On glans, proximal to normal site	Most common
Coronal	At coronal sulcus	Common
Penile (Mid-shaft)	Under penile shaft	Moderate
Penoscrotal	At penoscrotal junction	Less common
Scrotal	On scrotum (bifid scrotum)	Rare
Perineal	Between scrotal halves	Least common

Simplified Clinical Classification

Group	Types Included	Surgery
Anterior (Distal) ~70%	Glanular, Coronal, Distal penile	Often single-stage
Middle ~10%	Mid-shaft penile	Single-stage possible
Posterior (Proximal) ~20%	Penoscrotal, Scrotal, Perineal	Often two-stage

Barcat Classification (for severity)

Grade	Position
Grade I	Glanular / Coronal
Grade II	Distal penile / Mid-penile
Grade III	Proximal penile / Penoscrotal
Grade IV	Scrotal / Perineal

6. CLINICAL PHOTOGRAPHS

Perineal hypospadias - severe type:

Fig: Perineal/severe hypospadias with chordee and bifid scrotum (Bailey & Love)

Glanular hypospadias in infant (arrow = meatal opening):

Fig: Glanular hypospadias - meatus on ventral surface of glans (The Developing Human)

Urethrocutaneous fistula (most common complication):

Fig: Urethrocutaneous fistula after failed hypospadias repair (Bailey & Love)

7. INVESTIGATIONS

When to Investigate?

For ROUTINE / DISTAL hypospadias:

Diagnosis is purely clinical - NO investigations needed routinely
Physical examination is sufficient

INVESTIGATE when:

Indication	Investigation	Rationale
Severe hypospadias (penoscrotal/perineal)	Karyotype (chromosomal analysis)	Rule out DSD
Perineal hypospadias + bilateral cryptorchidism	Karyotype + pelvic USS	Rule out 46,XX CAH or gonadal dysgenesis
Micropenis + severe hypospadias	LH, FSH, testosterone, DHT, 17-OH progesterone	Endocrine workup
Any suspicion of DSD	FISH for SRY, estrogen, androgens	Intersex evaluation
Recurrent UTI / poor stream	MCUG (voiding cystourethrogram)	Rule out reflux / stricture
Pre-operative workup (proximal cases)	RGU (retrograde urethrogram) / MCUG	Assess urethral anatomy
Post-operative evaluation	Uroflowmetry	Assess voiding function
Failed repair / fistula	RGU + MCU	Assess recurrence, stricture

Specific Investigations Table

Investigation	Finding in Hypospadias	When to Do
Clinical Exam	Ventral meatus + hooded foreskin + chordee	ALWAYS first
Karyotype	46,XX → DSD; 46,XY → confirmed male	Perineal/scrotal type
Serum 17-OHP	Elevated in CAH	Ambiguous genitalia
Testosterone + DHT ratio	>20:1 ratio → 5-alpha reductase deficiency	Small phallus + hypospadias
Pelvic USS	Mullerian structures (uterus?)	DSD workup
RGU/MCU	Shows urethral anatomy, strictures	Pre/post-op in proximal cases
Uroflowmetry	Reduced flow, prolonged void	Post-operative follow-up
HCG stimulation test	Assess testosterone response	Micropenis / undescended testes

When NOT to Investigate

Distal glanular or coronal hypospadias with no associated anomalies - no workup needed
Isolated hypospadias without ambiguous genitalia or cryptorchidism - clinical diagnosis only

8. PREOPERATIVE CONSIDERATIONS

Key Rules Before Surgery

NEVER CIRCUMCISE a child with hypospadias - preputial skin is the most valuable graft material
Correct age: 6-18 months is the optimal window (before toilet training, penile development)
Most surgeons prefer 6-12 months
Anesthetic risk is acceptable after 6 months
Magnification (2.5x-3.5x loupes or operating microscope) is mandatory
Preoperative testosterone cream/DHT cream (topical) for 4-6 weeks may enlarge a small phallus
Assess: meatal position, urethral plate quality, degree of chordee, foreskin amount

Hormonal Priming (Preoperative)

Topical DHT or testosterone applied for 4-6 weeks pre-op
Used for small phallus or in proximal cases
Systemic HCG or testosterone for severe micropenis
A 2024 systematic review (PMID 38739164) confirmed benefit of topical estrogen / hormone priming in hypospadias management

9. SURGICAL PRINCIPLES - GOALS OF REPAIR

The ideal repair achieves:

Orthotopic meatus - vertical slit at tip of glans
Straight penis - correction of chordee
Normal voiding - forward, non-deflected stream
Cosmetically normal appearance
Normal sexual function in adulthood
Low complication rate - fistula rate <5% is the benchmark

10. SURGICAL TECHNIQUES

OVERVIEW: Which technique for which type?

Type of Hypospadias	Preferred Repair
Glanular (meatal advancement possible)	MAGPI or Urethromeatoplasty
Coronal / Distal penile - good urethral plate	TIP (Snodgrass) - GOLD STANDARD
Distal - wide plate, no chordee	Thiersch-Duplay (Tubularization)
Distal - parameatal skin available	Mathieu (Flip-Flap)
Mid/proximal - intact urethral plate	TIP or Onlay Island Flap (OIF)
Proximal with chordee - needs plate division	Two-stage Bracka/Byars repair
Severe - inadequate local tissue	Buccal mucosa graft (staged)
Failed/redo cases	Buccal mucosa graft / staged repair

A. MAGPI (Meatal Advancement and Glanuloplasty Incorporated)

Duckett, 1981

Indication: Glanular / subcoronal hypospadias with mobile meatus (can advance distally)

Steps:

Transverse incision distal to meatus (Heineke-Mikulicz principle)
Close transversely to advance meatus distally
Dorsal skin bridge excised
Glanular wings approximated to create conical glans

Contraindication: Meatus that cannot be easily advanced; narrow glans; any chordee

B. TIP REPAIR (Tubularized Incised Plate) - SNODGRASS

Snodgrass, 1994 - Current GOLD STANDARD

Indication: Distal to mid-penile hypospadias with a good urethral plate (90%+ of distal repairs)

KEY PRINCIPLE: A midline incision in the urethral plate paradoxically WIDENS it (allows tubularization without tension)

TIP Repair Surgical Steps - Distal (Campbell-Walsh)

Fig: Distal TIP repair steps A-G (Campbell-Walsh Urology)

Surgical Steps (Snodgrass TIP):

A - Circumscribing skin incision around hypospadiac meatus, preserving urethral plate
B - Penile degloving - skin retracted proximally, chordee assessed
C - Deep midline incision of urethral plate to underlying corporal bodies (the KEY step - widens the plate)
D - Tubularization - plate rolled into tube over catheter using 7-0 PDS running sutures; first stitch ~3mm proximal to meatal end (creates oval opening)
E - Dartos flap cover - pedicled dartos/subcutaneous flap interposed between neourethra and skin (reduces fistula risk - WATERPROOFING LAYER)
F - Glansplasty - glans wings approximated over neourethra creating neo-meatus at tip
G - Skin closure + circumcision or preputioplasty

Midline incision of urethral plate - TIP step

Fig: Midline incision into the urethral plate - the defining step of TIP repair (Hinman's Atlas)

TIP repair - incision, widened plate, tubularized result

Fig: Sequence showing (L→R): midline incision, widened plate, tubularized/closed neourethra (Hinman's Atlas)

Advantages of TIP:

Most cosmetically normal meatus (vertical slit)
Single-stage
No graft/flap needed in distal cases
90%+ used for distal hypospadias in surveys

Limitations of TIP:

Requires a GOOD, flat, wide urethral plate
If plate is narrow/stenotic → risk of meatal stenosis
Long TIP repair (penoscrotal) → HIGH RESISTANCE neourethra → prolonged voiding, poor flow
Not ideal for proximal hypospadias with severe chordee

Contraindications:

Severe chordee requiring urethral plate division
Very narrow or scarred urethral plate
Redo cases with scarred tissues

C. MATHIEU (FLIP-FLAP) REPAIR

Mathieu, 1932

Indication: Distal/coronal hypospadias with parameatal skin available, wide urethral plate

Steps:

Parameatal-based proximal flap raised (equal in length to deficient urethra)
Flap FLIPPED (rotated 180°) onto ventral glans over urethral plate
Flap and plate edges sutured together distally
Creates neo-meatus at tip

Advantage: Simple, single-stage, no plate incision needed Disadvantage: Tendency toward "fish-mouth" meatus appearance; vascular compromise if flap base narrow

D. ONLAY ISLAND FLAP (OIF) / DUCKETT

Indication: Mid-to-proximal hypospadias with good urethral plate that cannot be tubularized alone

Steps:

Inner preputial skin island flap raised on vascular pedicle (dartos)
Flap transposed ventrally and sutured as an ONLAY onto the retained urethral plate (augments width)
Glansplasty performed

Advantage: Elastic tissue → lower resistance (better flow than proximal TIP); less meatal stenosis Risk: Urethral diverticulum (elasticity of preputial skin), fish-mouth meatus

Comparison of TIP vs Onlay urethral resistance and flow

Fig: TIP (long segment) creates high resistance and prolonged void (A) vs short TIP (B) vs Onlay flap (C) - more elastic, lower resistance, better flow (Campbell-Walsh)

E. TRANSVERSE PREPUTIAL ISLAND FLAP (TPIF) / DUCKETT TUBE

Indication: Proximal hypospadias - one-stage repair when curvature corrected after degloving

Steps:

Penile degloving + artificial erection to assess curvature
Transverse preputial inner skin island harvested on dartos pedicle
Island flap TUBULARIZED into a neourethra
Anastomosed to native proximal urethra
Transposed ventrally through buttonhole in pedicle
Glansplasty completed

Key concern: Fish-mouth meatus; higher diverticulum rate; complication rate higher than OIF

F. TWO-STAGE REPAIR (BRACKA / BYARS)

Indication: Proximal hypospadias with severe chordee requiring urethral plate division; Failed primary repairs; Redo/salvage cases

Stage 1 (Correction):

Full penile degloving
Chordee correction - division of urethral plate + division of fibrous tissue
Multiple ventral corporotomies if needed (corporal lengthening)
BRACKA: Buccal mucosa graft (BMG) or inner prepucial graft laid on ventral surface and quilted
BYARS: Dorsal prepucial skin transposed ventrally as pedicled flaps sutured in midline
Penis allowed to heal for minimum 6 months

Stage 2 (Tubularization):

U-shaped (Thiersch-Duplay) incision around neourethral template
Tubularize the graft/flap into neourethra over catheter
Multilayer closure with dartos cover
Glansplasty

Advantages: Best correction of severe curvature; allows corporal lengthening; versatile Disadvantage: Two operations required 6 months apart; higher overall complication rate

G. THIERSCH-DUPLAY TUBULARIZATION

Indication: Wide, flat urethral plate without plate incision (or second stage of staged repair)

Steps:

U-incision around urethral plate
Plate edges rolled into tube over catheter
Closed in 2 layers with dartos cover
Glansplasty

H. BUCCAL MUCOSA GRAFT (BMG)

Indication: Scarred/stenotic urethra, redo/salvage repairs, inadequate local tissue, failed TIP

Harvest site: Inner cheek or lower lip Advantage: Robust epithelium, resistant to infection, wet mucosal environment, low contracture Steps (staged): BMG spread-quilted onto ventral shaft → second stage tubularization

A 2025 systematic review (PMID 39945907) on post-pubertal outcomes after oral mucosa grafts confirmed generally good long-term results in urethral reconstruction for hypospadias.

11. CHORDEE CORRECTION

Artificial erection test (saline injection): Always done intra-operatively to assess curvature

Degree of Curvature	Management
< 30°	Dorsal plication (Nesbit/modified)
30-60°	Extensive dorsal plication OR corporotomy
> 60°	Multiple ventral corporotomies + graft; plate MUST be divided; two-stage preferred

Dorsal Plication: Midline sutures on dorsal tunica, opposite point of maximal curvature. Simple but shortens penis slightly.

12. POSTOPERATIVE CARE

Element	Detail
Catheter	6-Fr silicone "drip stent" sutured to glans
Duration	7-10 days (distal), 10-14 days (proximal)
Dressing	Tegaderm/Op-Site wrapped compressively
Antibiotics	Co-trimoxazole prophylaxis during catheterization
Diaper	Double-diaper technique (catheter drains into outer diaper)
Bathing	Avoided 2-4 days; then sitz baths
Follow-up	3-6 months minimum; uroflowmetry at follow-up

13. COMPLICATIONS

Most Common Complication: Urethrocutaneous Fistula (~10%)

Complication	Incidence	Time of Presentation
Urethrocutaneous fistula	~10%	Weeks-months post-op
Meatal/urethral stenosis	5-10%	Weeks-years post-op
Glans dehiscence	5-10%	Early post-op
Urethral stricture	Variable	Months-years
Urethral diverticulum	Commoner with OIF/TPIF	Months-years
Chordee recurrence	5-30% (proximal)	At puberty
Hair in urethra	If scrotal skin used	Puberty
Erectile dysfunction	~25% in adulthood	Adulthood
Ejaculatory dysfunction	~37%	Adulthood

Most common complication = Urethrocutaneous Fistula Most common site of fistula = at original meatal site or coronal margin

Management of fistula: Wait 6 months after primary repair → then fistula closure with layered tissue coverage (local flap advancement)

14. INDICATIONS / CONTRAINDICATIONS / TIMING SUMMARY

Indications for Surgery

All hypospadias except the most minor glanular type
Functional: poor urinary stream direction, spraying, incomplete emptying
Cosmetic: abnormal penile appearance
Psychological: normal appearance for peer development
Sexual: to enable normal penetrative intercourse

When NOT to Operate

Isolated minor glanular hypospadias with normal meatus caliber and no chordee (relative)
Very small phallus → operate only after hormonal priming
Active local infection
Before 6 months of age (anesthetic risk)
In a major syndromic child where surgery adds undue risk

TIMING - Optimal Window

6-18 months is universally accepted optimal window
Before toilet training (typically before 2 years)
Before psychological awareness of genital differences (~18 months)
NEVER circumcise before repair

15. KEY EXAM FLOWCHART - MANAGEMENT OF HYPOSPADIAS

NEWBORN MALE → CLINICAL DIAGNOSIS (Ventral meatus + Hooded foreskin + Chordee)
                        ↓
         ┌──────────────┴──────────────┐
    DISTAL (70%)                 PROXIMAL (30%)
    Glanular/Coronal              Penoscrotal/Perineal
         │                               │
    No workup needed         INVESTIGATE:
                             • Karyotype
                             • Hormone panel
                             • Pelvic USS
                             • Rule out DSD
         │                               │
         ↓                               ↓
  AVOID CIRCUMCISION ←──── In ALL cases ────→ AVOID CIRCUMCISION
         │                               │
         ↓                               ↓
  Hormonal priming             Hormonal priming
  if small phallus              MANDATORY
         │                               │
         ↓                               ↓
   OPERATE AT 6-18 months        OPERATE AT 6-18 months
         │                               │
         ↓                               ↓
   Good urethral plate?          Good urethral plate?
   Minimal chordee?              Severe chordee?
         │                               │
         ↓                               ↓
   TIP (SNODGRASS) ← GOLD STANDARD    Two-Stage Repair
   [90% of distal repairs]            (Bracka BMG or Byars)
         │                               │
   If OIF needed (proximal           Stage 1: Chordee correction
   but plate OK): ONLAY FLAP         + graft/flap placement
         │                             (wait 6 months)
         ↓                               │
   POST-OP:                          Stage 2: Tubularization
   Catheter 7-10 days                + Glansplasty
   Antibiotics prophylaxis
   Uroflowmetry at follow-up
         │
         ↓
   COMPLICATION? (10% fistula, 5-10% stenosis)
         │
         ↓
   Wait 6 months → Redo/Fistula closure
   (Buccal mucosa graft for major redo)

16. CRISP POINT SUMMARY (Exam Crux)

#	High-Yield Point
1	Hypospadias = MOST COMMON congenital urethral anomaly (1:300 males)
2	Glanular = most common type; Perineal = least common, most severe
3	Classic triad: Ventral meatus + Hooded foreskin + Chordee
4	Etiology: Inadequate androgen (T/DHT) effect on urethral folds/ectoderm
5	Genes: SRD5A2, AR, MAMLD1 most important
6	Perineal + bilateral cryptorchidism → DSD workup (karyotype mandatory)
7	NEVER circumcise - prepuce = future graft material
8	Optimal surgical age = 6-18 months
9	TIP (Snodgrass) = Gold standard for distal hypospadias
10	TIP key step = Midline incision of urethral plate (widens it)
11	Dartos flap = waterproofing layer over neourethra (reduces fistula)
12	Most common complication = Urethrocutaneous fistula (~10%)
13	Proximal + severe chordee → Two-stage repair (Bracka BMG or Byars)
14	Fistula management: wait 6 months then surgical closure
15	Buccal mucosa graft = graft of choice for redo/salvage
16	Artificial erection test done intra-operatively to assess chordee
17	Chordee > 60° → corporal lengthening + two-stage
18	Post-op follow-up includes uroflowmetry
19	ART (IVF) doubles hypospadias risk
20	Onlay Island Flap → risk of urethral diverticulum (elastic preputial skin)

Recent Evidence (2024-2026):

Topical estrogen/hormone priming systematic review 2024 - supports pre-op hormonal priming for small phallus (PMID: 38739164)
Oral mucosa graft outcomes 2025 - confirms good post-pubertal outcomes for buccal mucosa urethral reconstruction (PMID: 39945907)
Platelet-rich plasma in hypospadias repair meta-analysis 2026 - emerging adjunct to reduce fistula risk (PMID: 42001334)
TIP repair: interrupted vs continuous sutures meta-analysis 2026 - interrupted sutures may have lower fistula rate (PMID: 42240839)

Sources: Campbell-Walsh Wein Urology (10th Ed), Bailey & Love's Short Practice of Surgery (28th Ed), Hinman's Atlas of Urologic Surgery, The Developing Human - Moore & Persaud, Schwartz's Principles of Surgery (11th Ed)

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<!-- COVER PAGE -->
<div class="cover">
  <div class="badge">Plastic Surgery Exam Preparation</div>
  <h1>Hypospadias</h1>
  <h2>Complete Clinical &amp; Surgical Reference Guide</h2>
  <div class="divider"></div>
  <div class="subtitle">
    Demography · Etiology · Classification · Clinical Features · Investigations<br>
    Surgical Techniques · Complications · Management Flowchart
  </div>
  <div class="icon-row">
    <div class="icon-box">📚 Campbell-Walsh Urology</div>
    <div class="icon-box">📖 Bailey &amp; Love (28e)</div>
    <div class="icon-box">🔬 Hinman's Atlas</div>
    <div class="icon-box">🧬 The Developing Human</div>
  </div>
  <div class="sources">Compiled from Standard Surgical &amp; Urological Textbooks · June 2026</div>
</div>

<!-- CONTENT -->
<div class="content">

<!-- ═══════════════════════════════════════════════ -->
<div class="section-header"><span class="num">1</span> DEMOGRAPHY &amp; EPIDEMIOLOGY</div>

<table>
  <tr><th>Parameter</th><th>Key Fact</th></tr>
  <tr><td>Incidence</td><td>1 in 125–300 male live births</td></tr>
  <tr><td>Most common congenital urethral anomaly</td><td><strong>YES</strong> — Hypospadias is #1</td></tr>
  <tr><td>Most common type</td><td><strong>Glanular hypospadias</strong></td></tr>
  <tr><td>Distal types combined</td><td>~70% of all cases</td></tr>
  <tr><td>Glanular + Penile together</td><td>~80% of all cases</td></tr>
  <tr><td>Least common / most severe</td><td><strong>Perineal hypospadias</strong> (~1%)</td></tr>
  <tr><td>Familial risk (affected father)</td><td>8% risk in son</td></tr>
  <tr><td>Familial risk (affected sibling)</td><td>14% risk</td></tr>
  <tr><td>Trend</td><td>Incidence rising in developed countries (endocrine disruptors)</td></tr>
  <tr><td>Associated with ART (IVF)</td><td>Risk doubled</td></tr>
</table>

<div class="exam-crux">
  <div class="crux-title">⭐ EXAM CRUX</div>
  Hypospadias = <strong>MOST COMMON congenital urethral anomaly</strong> (1 in 300 males).
  <strong>Glanular</strong> = most common type. <strong>Perineal</strong> = least common but most severe.
</div>

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<div class="section-header"><span class="num">2</span> EMBRYOLOGY &amp; PATHOGENESIS</div>

<h3>Normal Urethral Development</h3>
<ul>
  <li>Urethral folds fuse ventrally under <strong>androgen stimulation</strong> — weeks 8–16 of gestation</li>
  <li>The spongy (penile) urethra: formed by <strong>fusion of urethral folds</strong></li>
  <li>The glanular urethra: formed by <strong>canalization of ectodermal cord</strong> in glans</li>
  <li>Full development requires <strong>testosterone → DHT</strong> (via 5-alpha reductase type 2)</li>
</ul>

<h3>Mechanism of Hypospadias</h3>
<ul>
  <li><strong>Failure of canalization</strong> of ectodermal cord → glanular hypospadias</li>
  <li><strong>Failure of fusion of urethral folds</strong> → penile / proximal hypospadias</li>
  <li>Combined failure → complete ventral hypoplasia + chordee</li>
  <li>Result: <em>hypospadias is principally a ventral hypoplasia</em> — meatal position is only the most visible sign</li>
</ul>
<p><em>Source: The Developing Human — Moore &amp; Persaud</em></p>

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<div class="section-header"><span class="num">3</span> ETIOLOGY</div>

<h3>Genetic Factors</h3>
<ul>
  <li>Polygenic / multifactorial inheritance</li>
  <li>Key genes: <strong>SRD5A2</strong> (5α-reductase 2), <strong>AR</strong> (androgen receptor), <strong>MAMLD1</strong>, ATF3, FGF8, FGF10, BMP7, MID1, CXorf6</li>
  <li>Monozygotic twins: 18% concordance (not 100% → environmental component)</li>
  <li>Family history in ~7–10% of cases</li>
</ul>

<h3>Hormonal / Endocrine Factors</h3>
<ul>
  <li>Inadequate androgen production by fetal testes</li>
  <li>Inadequate androgen receptor sensitivity (partial androgen insensitivity)</li>
  <li><strong>5-alpha reductase deficiency</strong> → cannot convert testosterone → DHT</li>
  <li>Maternal progestagen/estrogen exposure</li>
</ul>

<h3>Environmental Factors (Endocrine Disruptors)</h3>
<table>
  <tr><th>Agent</th><th>Mechanism</th></tr>
  <tr><td>Pesticides (DDT, DDE, vinclozolin)</td><td>Anti-androgenic</td></tr>
  <tr><td>Phthalates (plastics)</td><td>Anti-androgenic</td></tr>
  <tr><td>Phytoestrogens (soy)</td><td>Estrogen-like effect</td></tr>
  <tr><td>ART (IVF/ICSI)</td><td>Doubles risk</td></tr>
  <tr><td>Maternal obesity / preeclampsia</td><td>Placental insufficiency → reduced androgen</td></tr>
  <tr><td>Low birth weight / prematurity</td><td>Reduced androgen exposure</td></tr>
</table>

<h3>Associated Conditions</h3>
<table>
  <tr><th>Condition</th><th>Frequency</th><th>Significance</th></tr>
  <tr><td>Cryptorchidism</td><td>~9%</td><td>Investigate for DSD if bilateral</td></tr>
  <tr><td>Inguinal hernia</td><td>~9%</td><td>Patent processus vaginalis</td></tr>
  <tr><td>DSD / Intersex</td><td>Severe cases</td><td>Perineal + cryptorchidism → mandatory workup</td></tr>
  <tr><td>CAH (46,XX)</td><td>Rare</td><td>Virilized female — perineal "hypospadias"</td></tr>
</table>

<div class="highlight-box danger">
  <strong>⚠ EXAM TRAP:</strong>
  Perineal hypospadias + bilateral cryptorchidism + micropenis → <strong>ALWAYS investigate for DSD</strong> (karyotype mandatory before any surgical planning)
</div>

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<div class="section-header"><span class="num">4</span> CLINICAL FEATURES — THE TRIAD</div>

<div class="highlight-box success">
  <strong>Classic Triad (Pathognomonic):</strong>
  <ol style="margin-top:6px; margin-left:18px;">
    <li><strong>Ectopic ventral urethral meatus</strong> — proximal to normal site</li>
    <li><strong>Ventral chordee</strong> — penile curvature (fibrous dysplastic tissue replacing spongiosum)</li>
    <li><strong>Dorsal hood / incomplete prepuce</strong> — foreskin present dorsally, absent ventrally</li>
  </ol>
</div>

<h3>Additional Features</h3>
<ul>
  <li>Urethral dimple / blind pit at normal meatal site on glans</li>
  <li>Bifid scrotum (severe/perineal cases)</li>
  <li>Penoscrotal transposition (severe cases)</li>
  <li>Downward deflection of urinary stream</li>
  <li>Urinary spraying (40–50%)</li>
  <li>Post-void dribbling (20–40%)</li>
  <li>Incomplete bladder emptying in proximal cases</li>
</ul>

<p><strong>Note:</strong> In mild distal cases, chordee may be <em>absent</em> — meatus position + hooded foreskin are the only signs.</p>

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<div class="section-header"><span class="num">5</span> CLASSIFICATION</div>

<h3>Anatomical Classification by Meatal Position</h3>

<div class="img-box">
  <img src="https://cdn.orris.care/cdss_images/35080b5b5ef07864b808be5059d9cdbf868a919af69ae921cbbae9a1ec50092a.png" alt="Hypospadias Classification Diagram">
  <div class="caption">Fig 5.1: Hypospadias classification — Glanular, Coronal, Penoscrotal, Perineal positions shown with hooded foreskin. <em>(Bailey &amp; Love, 28th Ed)</em></div>
</div>

<table>
  <tr><th>Type</th><th>Meatal Position</th><th>Frequency</th></tr>
  <tr><td><strong>Glanular</strong></td><td>On glans, proximal to normal tip</td><td>Most common</td></tr>
  <tr><td>Coronal</td><td>At coronal sulcus</td><td>Common</td></tr>
  <tr><td>Penile (Mid-shaft)</td><td>Under penile shaft</td><td>Moderate</td></tr>
  <tr><td>Penoscrotal</td><td>At penoscrotal junction</td><td>Less common</td></tr>
  <tr><td>Scrotal</td><td>On scrotum (bifid scrotum)</td><td>Rare</td></tr>
  <tr><td><strong>Perineal</strong></td><td>Between scrotal halves</td><td>Least common (~1%)</td></tr>
</table>

<h3>Simplified Clinical Groups</h3>
<table>
  <tr><th>Group</th><th>Types</th><th>% of Cases</th><th>Surgical Approach</th></tr>
  <tr><td><strong>Anterior (Distal)</strong></td><td>Glanular, Coronal, Distal penile</td><td>~70%</td><td>Single-stage (TIP)</td></tr>
  <tr><td>Middle</td><td>Mid-shaft penile</td><td>~10%</td><td>Single-stage possible</td></tr>
  <tr><td><strong>Posterior (Proximal)</strong></td><td>Penoscrotal, Scrotal, Perineal</td><td>~20%</td><td>Often two-stage</td></tr>
</table>

<h3>Barcat Classification (Severity Grade)</h3>
<table>
  <tr><th>Grade</th><th>Position</th></tr>
  <tr><td>Grade I</td><td>Glanular / Coronal</td></tr>
  <tr><td>Grade II</td><td>Distal penile / Mid-penile</td></tr>
  <tr><td>Grade III</td><td>Proximal penile / Penoscrotal</td></tr>
  <tr><td>Grade IV</td><td>Scrotal / Perineal</td></tr>
</table>

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<div class="section-header"><span class="num">6</span> CLINICAL PHOTOGRAPHS</div>

<div class="img-row">
  <div class="img-box">
    <img src="https://cdn.orris.care/cdss_images/a4958ecd4f14d5f1ffe5d80766d2e442086f8df6c740e16d044702c4691d1568.png" alt="Glanular Hypospadias">
    <div class="caption">Glanular hypospadias in infant — meatus on ventral glans surface (arrow). <em>(The Developing Human)</em></div>
  </div>
  <div class="img-box">
    <img src="https://cdn.orris.care/cdss_images/32d9dd043fe215282415281167c0270a97a9b528fff5f9629d9332d8e865716a.png" alt="Perineal Hypospadias">
    <div class="caption">Perineal / severe hypospadias with bifid scrotum and chordee. <em>(Bailey &amp; Love, 28th Ed)</em></div>
  </div>
</div>

<div class="img-box">
  <img src="https://cdn.orris.care/cdss_images/39dda82ccff3714a11ada2cb410e0fdfcf7a9277a4eca5ce80b27c6851d9375a.png" alt="Urethrocutaneous Fistula">
  <div class="caption">Urethrocutaneous fistula — most common complication of hypospadias repair, seen here with instrument through the fistulous opening. <em>(Bailey &amp; Love, 28th Ed)</em></div>
</div>

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<div class="section-header"><span class="num">7</span> INVESTIGATIONS</div>

<h3>When to Investigate vs When NOT to</h3>

<div class="highlight-box success">
  <strong>✅ Distal glanular/coronal hypospadias (no associated anomalies):</strong>
  Diagnosis is purely clinical — NO investigations needed.
</div>

<div class="highlight-box warning">
  <strong>⚠ INVESTIGATE when:</strong>
  Severe/proximal hypospadias, perineal type, bilateral cryptorchidism, micropenis, ambiguous genitalia, or DSD suspected.
</div>

<table>
  <tr><th>Investigation</th><th>Indication</th><th>Finding / Significance</th></tr>
  <tr><td><strong>Karyotype</strong></td><td>Perineal/scrotal hypospadias; bilateral undescended testes</td><td>46,XX → DSD; 46,XY → confirmed male</td></tr>
  <tr><td><strong>Serum 17-OHP</strong></td><td>Ambiguous genitalia</td><td>Elevated → CAH (congenital adrenal hyperplasia)</td></tr>
  <tr><td>Testosterone / DHT ratio</td><td>Micropenis + hypospadias</td><td>&gt;20:1 → 5-alpha reductase deficiency</td></tr>
  <tr><td>LH, FSH, testosterone</td><td>Small phallus / possible gonadal dysfunction</td><td>Hormonal axis assessment</td></tr>
  <tr><td><strong>Pelvic USS</strong></td><td>DSD workup</td><td>Presence of uterus / Mullerian structures</td></tr>
  <tr><td>SRY gene (FISH)</td><td>DSD / ambiguous genitalia</td><td>Confirms genetic sex</td></tr>
  <tr><td>RGU / MCU (voiding cystourethrogram)</td><td>Proximal cases pre-op; post-op assessment</td><td>Urethral anatomy, strictures, reflux</td></tr>
  <tr><td>Uroflowmetry</td><td>Post-operative follow-up</td><td>Assesses voiding function; detects stenosis</td></tr>
  <tr><td>HCG stimulation test</td><td>Micropenis / bilateral undescended testes</td><td>Tests testosterone response</td></tr>
</table>

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<div class="page-break"></div>
<div class="section-header"><span class="num">8</span> PREOPERATIVE CONSIDERATIONS</div>

<h3>Golden Rules Before Surgery</h3>
<ul>
  <li><strong>NEVER CIRCUMCISE</strong> — preputial skin is the most valuable graft material for future repairs</li>
  <li>Optimal surgical age: <strong>6–18 months</strong> (before toilet training and penile growth spurt)</li>
  <li>Most surgeons prefer <strong>6–12 months</strong></li>
  <li>Anaesthetic risk acceptable after 6 months</li>
  <li>Surgical magnification mandatory: <strong>2.5×–3.5× loupes</strong> (or operating microscope)</li>
  <li>Assess: meatal position, urethral plate width and quality, degree of chordee, foreskin availability</li>
</ul>

<h3>Preoperative Hormonal Priming</h3>
<table>
  <tr><th>Indication</th><th>Agent</th><th>Duration</th><th>Purpose</th></tr>
  <tr><td>Small phallus (local)</td><td>Topical DHT or testosterone cream</td><td>4–6 weeks pre-op</td><td>Enlarges phallus, improves tissue quality</td></tr>
  <tr><td>Severe micropenis (systemic)</td><td>IM testosterone or HCG</td><td>3–4 injections</td><td>Penile growth for surgery</td></tr>
</table>
<p><em>A 2024 systematic review (PMID 38739164) confirmed benefit of preoperative hormonal priming in hypospadias management.</em></p>

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<div class="section-header"><span class="num">9</span> SURGICAL GOALS</div>

<div class="highlight-box">
  <strong>The Ideal Repair Achieves:</strong>
  <ol style="margin-top:6px; margin-left:18px;">
    <li>Orthotopic meatus — vertical slit at tip of glans</li>
    <li>Straight penis — complete correction of chordee</li>
    <li>Normal voiding — forward, non-deflected stream, single stream</li>
    <li>Cosmetically normal appearance</li>
    <li>Normal sexual function in adulthood</li>
    <li>Low complication rate — fistula rate &lt;5% is the benchmark</li>
  </ol>
</div>

<!-- ═══════════════════════════════════════════════ -->
<div class="section-header"><span class="num">10</span> SURGICAL TECHNIQUES — OVERVIEW</div>

<table>
  <tr><th>Hypospadias Type</th><th>Preferred Repair</th></tr>
  <tr><td>Glanular (very distal, mobile meatus)</td><td><strong>MAGPI</strong> or Urethromeatoplasty</td></tr>
  <tr><td>Coronal / Distal penile — good urethral plate</td><td><strong>TIP (Snodgrass)</strong> — GOLD STANDARD</td></tr>
  <tr><td>Distal — wide plate, parameatal skin available</td><td>Mathieu (Flip-Flap)</td></tr>
  <tr><td>Mid/proximal — intact urethral plate, no severe chordee</td><td>TIP or Onlay Island Flap (OIF)</td></tr>
  <tr><td>Proximal with severe chordee (plate must be divided)</td><td><strong>Two-stage Bracka/Byars Repair</strong></td></tr>
  <tr><td>Scarred/redo/salvage cases</td><td><strong>Buccal Mucosa Graft (staged)</strong></td></tr>
</table>

<div class="exam-crux">
  <div class="crux-title">⭐ EXAM CRUX</div>
  TIP (Snodgrass) = used in <strong>&gt;90%</strong> of distal and <strong>&gt;80%</strong> of mid-shaft hypospadias repairs in surveys.<br>
  Two-stage = preferred for proximal hypospadias with severe chordee.
</div>

<!-- ═══════════════════════════════════════════════ -->
<div class="section-header"><span class="num">11</span> DETAILED SURGICAL TECHNIQUES</div>

<div class="surgery-card">
  <div class="card-header">A. MAGPI — Meatal Advancement and Glanuloplasty Incorporated (Duckett 1981)</div>
  <div class="card-body">
    <p><strong>Indication:</strong> Glanular / subcoronal hypospadias with mobile meatus capable of distal advancement</p>
    <p><strong>Contraindications:</strong> Any chordee; meatus that cannot advance; narrow glans</p>
    <h4>Steps:</h4>
    <ol class="steps">
      <li>Transverse incision distal to meatus (Heineke-Mikulicz principle)</li>
      <li>Close transversely — advances meatus distally</li>
      <li>Excise dorsal skin bridge</li>
      <li>Approximate glanular wings to create conical glans</li>
    </ol>
  </div>
</div>

<div class="surgery-card">
  <div class="card-header">B. TIP REPAIR — Tubularized Incised Plate (Snodgrass 1994) ⭐ GOLD STANDARD</div>
  <div class="card-body">
    <p><strong>Indication:</strong> Distal to mid-penile hypospadias with a good, flat urethral plate (90%+ of distal repairs)</p>
    <p><strong>KEY PRINCIPLE:</strong> A deep midline incision in the urethral plate paradoxically <em>WIDENS</em> it, allowing tubularization without tension and creating a slit-like meatus.</p>

    <div class="img-box" style="margin:12px 0;">
      <img src="https://cdn.orris.care/cdss_images/397b6ef25694d9f8db6df6ceb27fef845b00cef31e1ba3cbc00b1750ff401efa.png" alt="TIP Repair Steps A-G">
      <div class="caption">Fig: Distal TIP Repair — Steps A to G. (A) Circumscribing incision, (B) Incision along glans-plate junction, (C) Deep midline plate incision, (D) Tubularization, (E) Dartos cover, (F) Glansplasty, (G) Final result. <em>(Campbell-Walsh Urology)</em></div>
    </div>

    <h4>Surgical Steps:</h4>
    <ol class="steps">
      <li><strong>Circumscribing skin incision</strong> around hypospadiac meatus — urethral plate preserved</li>
      <li><strong>Penile degloving</strong> — skin retracted proximally; artificial erection to assess chordee</li>
      <li><strong>Deep midline incision of urethral plate</strong> extending to underlying corpora (KEY step — widens plate)</li>
      <li><strong>Tubularization</strong> — plate rolled into tube over catheter using 7-0 PDS running sutures; first stitch ~3mm proximal to meatal end (creates oval opening)</li>
      <li><strong>Dartos flap cover</strong> — pedicled dartos/subcutaneous flap interposed between neourethra and skin (waterproofing layer — reduces fistula risk)</li>
      <li><strong>Glansplasty</strong> — glans wings approximated over neourethra creating neo-meatus at tip</li>
      <li><strong>Skin closure</strong> ± circumcision or preputioplasty</li>
    </ol>

    <div class="img-row">
      <div class="img-box">
        <img src="https://cdn.orris.care/cdss_images/a3bdf0fd72c53be6c0fe23d92dd20c07e7aad2913a8b3932b36d81d66ab80762.png" alt="Midline incision of urethral plate">
        <div class="caption">Midline incision into urethral plate — defining step of TIP repair. <em>(Hinman's Atlas)</em></div>
      </div>
      <div class="img-box">
        <img src="https://cdn.orris.care/cdss_images/df34a53ece21a01acd9853a62e744f21167c5014eaa3e07c7d23b552d3a84178.png" alt="TIP sequence: incision, widened, tubularized">
        <div class="caption">L→R: midline incision, widened plate, tubularized/closed neourethra. <em>(Hinman's Atlas)</em></div>
      </div>
    </div>

    <table>
      <tr><th>Advantages</th><th>Limitations / Contraindications</th></tr>
      <tr><td>Most cosmetically normal meatus (vertical slit)</td><td>Requires a good, flat, wide urethral plate</td></tr>
      <tr><td>Single-stage procedure</td><td>Narrow plate → risk of meatal stenosis</td></tr>
      <tr><td>No graft/flap needed for distal cases</td><td>Proximal long-segment TIP → high resistance, poor flow</td></tr>
      <tr><td>Used &gt;90% of the time for distal repairs</td><td>Not suitable for severe chordee (plate must be divided)</td></tr>
    </table>
  </div>
</div>

<div class="surgery-card">
  <div class="card-header">C. MATHIEU (FLIP-FLAP) REPAIR (Mathieu 1932)</div>
  <div class="card-body">
    <p><strong>Indication:</strong> Distal / coronal hypospadias with parameatal skin, wide urethral plate, no chordee</p>
    <h4>Steps:</h4>
    <ol class="steps">
      <li>Parameatal-based proximal flap raised (equal length to deficient urethra)</li>
      <li>Flap FLIPPED (rotated 180°) onto ventral glans over urethral plate</li>
      <li>Flap edges sutured to plate edges distally</li>
      <li>Creates neo-meatus at tip</li>
    </ol>
    <p><strong>Advantage:</strong> Simple, single-stage, no plate incision. <strong>Disadvantage:</strong> Tendency to fish-mouth meatus; vascular risk if flap base narrow.</p>
  </div>
</div>

<div class="surgery-card">
  <div class="card-header">D. ONLAY ISLAND FLAP (OIF) — Duckett</div>
  <div class="card-body">
    <p><strong>Indication:</strong> Mid-to-proximal hypospadias with intact urethral plate insufficient for TIP alone</p>
    <h4>Steps:</h4>
    <ol class="steps">
      <li>Inner preputial skin island flap raised on vascular dartos pedicle</li>
      <li>Flap transposed ventrally and sutured as an <strong>ONLAY</strong> onto retained urethral plate (augments width)</li>
      <li>Glansplasty performed</li>
    </ol>
    <p><strong>Advantage:</strong> Elastic tissue → lower neourethral resistance → better voiding flow than proximal TIP</p>
    <p><strong>Risk:</strong> <strong>Urethral diverticulum</strong> (due to elasticity of preputial skin); fish-mouth meatus</p>

    <div class="img-box" style="margin:10px 0;">
      <img src="https://cdn.orris.care/cdss_images/63797d8e7f7e478092e397e344253e955573f2cb9c1f74e5ff158c1bc5cea9ad.png" alt="TIP vs Onlay flow comparison">
      <div class="caption">Urethral resistance &amp; flow comparison: (A) Long TIP = high resistance, prolonged void; (B) Short TIP = low resistance; (C) Onlay = elastic, low resistance, best flow. <em>(Campbell-Walsh)</em></div>
    </div>
  </div>
</div>

<div class="surgery-card">
  <div class="card-header">E. TRANSVERSE PREPUTIAL ISLAND FLAP (TPIF) / DUCKETT TUBE</div>
  <div class="card-body">
    <p><strong>Indication:</strong> Proximal hypospadias — one-stage repair when curvature corrected after degloving</p>
    <h4>Steps:</h4>
    <ol class="steps">
      <li>Penile degloving + artificial erection to assess curvature</li>
      <li>Transverse inner preputial skin island raised on dartos pedicle</li>
      <li>Island flap <strong>TUBULARIZED</strong> into neourethra</li>
      <li>Anastomosed to native proximal urethra</li>
      <li>Transposed ventrally through buttonhole in pedicle</li>
      <li>Glansplasty completed</li>
    </ol>
    <p><strong>Note:</strong> Higher complication rate than OIF; fish-mouth meatus; Duckett later preferred OIF even for severe cases.</p>
  </div>
</div>

<div class="page-break"></div>

<div class="surgery-card">
  <div class="card-header">F. TWO-STAGE REPAIR (BRACKA / BYARS)</div>
  <div class="card-body">
    <p><strong>Indication:</strong> Proximal hypospadias with severe chordee requiring plate division; failed primary repairs; redo/salvage</p>

    <table>
      <tr><th>Stage 1 (Correction)</th><th>Stage 2 (Tubularization, ≥6 months later)</th></tr>
      <tr>
        <td>
          <ul>
            <li>Full penile degloving</li>
            <li>Chordee correction: divide urethral plate + fibrous tissue</li>
            <li>Corporotomies for corporal lengthening if needed</li>
            <li><strong>Bracka:</strong> Buccal mucosa graft (BMG) or inner preputial graft quilted onto ventral surface</li>
            <li><strong>Byars:</strong> Dorsal preputial skin transposed ventrally as pedicled flaps sutured in midline</li>
            <li>Allow healing ≥6 months</li>
          </ul>
        </td>
        <td>
          <ul>
            <li>U-shaped (Thiersch-Duplay) incision around graft/flap template</li>
            <li>Tubularize into neourethra over catheter</li>
            <li>Multilayer closure with dartos cover</li>
            <li>Glansplasty</li>
          </ul>
        </td>
      </tr>
    </table>

    <p><strong>Advantages:</strong> Best correction of severe curvature; allows corporal lengthening; versatile</p>
    <p><strong>Disadvantage:</strong> Two operations 6 months apart; overall higher complication rate</p>
  </div>
</div>

<div class="surgery-card">
  <div class="card-header">G. BUCCAL MUCOSA GRAFT (BMG) — Salvage/Redo</div>
  <div class="card-body">
    <p><strong>Indication:</strong> Scarred/stenotic urethra; redo/salvage repairs; inadequate local tissue; failed TIP</p>
    <p><strong>Harvest site:</strong> Inner cheek or lower lip</p>
    <p><strong>Advantages:</strong> Robust wet-environment epithelium; resistant to infection; low contracture rate; good long-term outcomes</p>
    <p><em>A 2025 systematic review (PMID 39945907) confirmed good post-pubertal outcomes for buccal mucosa urethral reconstruction in hypospadias.</em></p>
    <p><strong>Staged approach:</strong> BMG spread-quilted onto ventral shaft (Stage 1) → tubularization at Stage 2</p>
  </div>
</div>

<!-- ═══════════════════════════════════════════════ -->
<div class="section-header"><span class="num">12</span> CHORDEE CORRECTION</div>

<div class="highlight-box">
  <strong>Intra-operative Artificial Erection Test:</strong> Saline injected into corpora cavernosa via butterfly needle — ALWAYS done to assess degree of curvature before and after release.
</div>

<table>
  <tr><th>Degree of Curvature</th><th>Management</th></tr>
  <tr><td>&lt;30°</td><td>Dorsal plication (Nesbit/modified) — midline sutures on dorsal tunica</td></tr>
  <tr><td>30–60°</td><td>Extensive dorsal plication OR ventral corporotomy</td></tr>
  <tr><td>&gt;60°</td><td>Multiple ventral corporotomies + graft; urethral plate MUST be divided; two-stage preferred</td></tr>
</table>

<p><strong>Dorsal plication note:</strong> Simple and effective for &lt;30°. Single 5-0 or 6-0 polypropylene stitch traversing ~5mm buried in tunica. No appreciable length loss with single plication. Caution with multiple stitches.</p>

<!-- ═══════════════════════════════════════════════ -->
<div class="section-header"><span class="num">13</span> POSTOPERATIVE CARE</div>

<table>
  <tr><th>Element</th><th>Detail</th></tr>
  <tr><td>Catheter type</td><td>6-Fr silicone "drip stent" sutured to glans with 4-0 monofilament</td></tr>
  <tr><td>Catheter duration</td><td>7–10 days (distal); 10–14 days (proximal/staged)</td></tr>
  <tr><td>Dressing</td><td>Tegaderm/Op-Site compressive wrap; removed in 2–3 days after warm baths</td></tr>
  <tr><td>Antibiotic prophylaxis</td><td>Co-trimoxazole / nitrofurantoin during catheterization</td></tr>
  <tr><td>Diaper technique</td><td>Double-diaper technique — catheter drains into outer diaper; inner diaper changed only after bowel movement</td></tr>
  <tr><td>Bathing</td><td>Avoid 2–4 days; then daily sitz baths</td></tr>
  <tr><td>Petroleum jelly</td><td>Applied to diaper area for 1 week to prevent adhesion</td></tr>
  <tr><td>Follow-up</td><td>3–6 months minimum; uroflowmetry at follow-up</td></tr>
</table>

<!-- ═══════════════════════════════════════════════ -->
<div class="section-header"><span class="num">14</span> COMPLICATIONS</div>

<div class="highlight-box danger">
  <strong>Most Common Complication: Urethrocutaneous Fistula (~10%)</strong><br>
  Most often at original meatal site or coronal margin. Multifactorial — ischaemia, infection, distal obstruction.
</div>

<table>
  <tr><th>Complication</th><th>Incidence</th><th>Management</th></tr>
  <tr><td><strong>Urethrocutaneous fistula</strong></td><td>~10%</td><td>Wait 6 months → layered fistula closure with dartos cover</td></tr>
  <tr><td>Meatal / urethral stenosis</td><td>5–10%</td><td>Regular dilatation; meatoplasty if severe</td></tr>
  <tr><td>Glans dehiscence</td><td>5–10% (early)</td><td>Re-repair after healing</td></tr>
  <tr><td>Urethral stricture</td><td>Variable</td><td>Dilatation; urethroplasty</td></tr>
  <tr><td>Urethral diverticulum</td><td>Commoner with OIF/TPIF</td><td>Surgical excision</td></tr>
  <tr><td>Chordee recurrence</td><td>5–30% (proximal)</td><td>Reassess at puberty; dorsal plication or corporal procedures</td></tr>
  <tr><td>Hair in neourethra</td><td>If scrotal skin used</td><td>Endoscopic hair removal / laser</td></tr>
  <tr><td>Erectile dysfunction</td><td>~25% in adulthood</td><td>Counselling; PDE5i</td></tr>
  <tr><td>Ejaculatory dysfunction</td><td>~37% in adulthood</td><td>Investigative; urethral dilitation</td></tr>
  <tr><td>Psychological impact</td><td>Significant (bullying etc.)</td><td>Early repair, psychological support</td></tr>
</table>

<!-- ═══════════════════════════════════════════════ -->
<div class="section-header"><span class="num">15</span> INDICATIONS, CONTRAINDICATIONS &amp; TIMING</div>

<h3>Indications for Surgery</h3>
<ul>
  <li>All hypospadias except the most trivial isolated glanular type with normal meatal caliber</li>
  <li>Functional: abnormal stream direction, spraying, incomplete emptying</li>
  <li>Cosmetic: abnormal penile appearance</li>
  <li>Psychological: normal appearance for peer development and toilet training</li>
  <li>Sexual: normal penetrative intercourse in adulthood</li>
</ul>

<h3>Relative Contraindications / When to Delay</h3>
<ul>
  <li>Age &lt;6 months (anaesthetic risk)</li>
  <li>Very small phallus — delay until after hormonal priming</li>
  <li>Active local infection</li>
  <li>DSD not yet characterized — investigation and multidisciplinary discussion first</li>
  <li>Major comorbidities that increase operative risk</li>
</ul>

<h3>Timing Summary</h3>
<table>
  <tr><th>Aspect</th><th>Recommendation</th></tr>
  <tr><td>Optimal age</td><td><strong>6–18 months</strong></td></tr>
  <tr><td>Most preferred window</td><td>6–12 months</td></tr>
  <tr><td>Rationale</td><td>Before toilet training, before psychological awareness (~18 months), penile size adequate, hormonal milieu favourable</td></tr>
  <tr><td>Circumcision</td><td><strong>NEVER</strong> before hypospadias repair is complete</td></tr>
  <tr><td>Two-stage interval</td><td>Minimum 6 months between Stage 1 and Stage 2</td></tr>
  <tr><td>Fistula repair interval</td><td>Minimum 6 months after primary repair</td></tr>
</table>

<!-- ═══════════════════════════════════════════════ -->
<div class="page-break"></div>
<div class="section-header"><span class="num">16</span> MANAGEMENT FLOWCHART</div>

<div class="flowchart">
NEWBORN MALE
    │
    ▼
CLINICAL DIAGNOSIS
(Ventral meatus + Hooded foreskin ± Chordee)
    │
    ├───────────────────────────────────────────┐
    │                                           │
DISTAL (~70%)                          PROXIMAL (~30%)
Glanular / Coronal / Penile            Penoscrotal / Scrotal / Perineal
    │                                           │
No workup needed                    INVESTIGATE:
                                    ● Karyotype (rule out DSD)
                                    ● Hormone panel (17-OHP, T/DHT)
                                    ● Pelvic USS (Mullerian structures)
                                    ● Rule out DSD / CAH
    │                                           │
    └────────── AVOID CIRCUMCISION ─────────────┘
                  (in ALL cases)
    │                                           │
    ▼                                           ▼
Hormonal priming                      Hormonal priming
if small phallus                      MANDATORY for small phallus
    │                                           │
    ▼                                           ▼
OPERATE AT 6–18 MONTHS              OPERATE AT 6–18 MONTHS
    │                                           │
    ▼                                           ▼
Good urethral plate?               Severe chordee / plate division needed?
No / minimal chordee?              ───────────────────────────────
    │                              YES → TWO-STAGE REPAIR
    ▼                                   Stage 1: Chordee correction
TIP (SNODGRASS)                              + BMG/Byars flap placement
GOLD STANDARD                               (wait ≥6 months)
(90%+ of distal repairs)               Stage 2: Tubularization
    │                                              + Glansplasty
If plate too narrow → OIF (Onlay)
If glanular + mobile → MAGPI
If parameatal skin → Mathieu
    │
    ▼
POST-OPERATIVE CARE:
● 6-Fr catheter 7–14 days
● Antibiotic prophylaxis
● Compressive dressing 2–3 days
● Double diaper technique
● Uroflowmetry at follow-up
    │
    ▼
COMPLICATION? (Fistula ~10%, Stenosis 5–10%)
    │
    ▼
Wait 6 months → Redo surgery
(Buccal mucosa graft for major redo cases)
</div>

<!-- ═══════════════════════════════════════════════ -->
<div class="section-header"><span class="num">17</span> CRISP EXAM POINTS — TOP 20</div>

<ol class="key-points">
  <li>Hypospadias = <strong>MOST COMMON</strong> congenital urethral anomaly (1 in 300 males)</li>
  <li><strong>Glanular</strong> = most common type; <strong>Perineal</strong> = least common, most severe</li>
  <li>Classic triad: <strong>Ventral meatus + Hooded foreskin + Chordee</strong></li>
  <li>Etiology: Inadequate androgen (testosterone/DHT) effect on urethral folds and ectodermal cord</li>
  <li>Key genes: <strong>SRD5A2</strong>, <strong>AR</strong>, <strong>MAMLD1</strong></li>
  <li>Perineal + bilateral cryptorchidism → <strong>DSD workup MANDATORY</strong> (karyotype)</li>
  <li><strong>NEVER circumcise</strong> — prepuce = essential graft material for future repair</li>
  <li>Optimal surgical age = <strong>6–18 months</strong></li>
  <li><strong>TIP (Snodgrass)</strong> = Gold standard for distal hypospadias (90%+ usage)</li>
  <li>TIP key step = <strong>Deep midline incision of urethral plate</strong> (widens it paradoxically)</li>
  <li><strong>Dartos flap</strong> = waterproofing/barrier layer over neourethra (critical for reducing fistula)</li>
  <li>Most common complication = <strong>Urethrocutaneous Fistula (~10%)</strong></li>
  <li>Proximal + severe chordee → <strong>Two-stage repair</strong> (Bracka BMG or Byars)</li>
  <li>Fistula management: wait <strong>6 months</strong> then staged surgical closure</li>
  <li><strong>Buccal mucosa graft</strong> = graft of choice for redo/salvage repair</li>
  <li>Artificial erection test done <strong>intra-operatively</strong> to assess degree of chordee</li>
  <li>Chordee &gt;60° → <strong>corporal lengthening + two-stage</strong></li>
  <li>Post-op follow-up MUST include <strong>uroflowmetry</strong></li>
  <li>Onlay Island Flap → main risk = <strong>urethral diverticulum</strong> (elastic preputial skin)</li>
  <li>ART (IVF) <strong>doubles</strong> the risk of hypospadias</li>
</ol>

<!-- ═══════════════════════════════════════════════ -->
<div class="section-header"><span class="num">18</span> RECENT EVIDENCE (2024–2026)</div>

<table>
  <tr><th>Study</th><th>Finding</th><th>PMID</th></tr>
  <tr><td>Topical estrogen in hypospadias (Systematic Review 2024)</td><td>Supports preoperative hormonal priming to improve phallus size and tissue quality</td><td>38739164</td></tr>
  <tr><td>Oral mucosa graft post-pubertal outcomes (SR 2025)</td><td>Good long-term urethral and functional outcomes with buccal mucosa grafts</td><td>39945907</td></tr>
  <tr><td>PRP in hypospadias repair (Meta-Analysis 2026)</td><td>Platelet-rich plasma reduces fistula and complication rates — emerging adjunct</td><td>42001334</td></tr>
  <tr><td>Interrupted vs continuous sutures for TIP (Meta-Analysis 2026)</td><td>Interrupted sutures may have lower fistula rate than continuous sutures</td><td>42240839</td></tr>
  <tr><td>Sexual function &amp; fertility after hypospadias repair (SR 2026)</td><td>~25% erectile dysfunction, ~37% ejaculatory issues; ~13% infertility in adulthood</td><td>41866511</td></tr>
</table>

<!-- ═══════════════════════════════════════════════ -->
<div class="ref-box">
  <strong>Sources:</strong> Campbell-Walsh Wein Urology (10th Ed) | Bailey &amp; Love's Short Practice of Surgery (28th Ed) | Hinman's Atlas of Urologic Surgery | The Developing Human — Moore &amp; Persaud | Schwartz's Principles of Surgery (11th Ed) | Mulholland &amp; Greenfield's Surgery (7th Ed) | PubMed systematic reviews 2024–2026
</div>

<div class="footer-note">
  Prepared for Plastic Surgery Exam Preparation · Compiled June 2026 · Orris Medical AI
</div>

</div><!-- /content -->
</body>
</html>

Running Command

cd /home/daytona/workspace/hypospadias-pdf && python3 -c " import subprocess, sys # Try WeasyPrint first try: import weasyprint weasyprint.HTML(filename='hypospadias.html').write_pdf('Hypospadias_Exam_Guide.pdf') print('WeasyPrint: SUCCESS') except Exception as e: print(f'WeasyPrint failed: {e}') # Try wkhtmltopdf try: result = subprocess.run([ 'wkhtmltopdf', '--page-size', 'A4', '--margin-top', '18mm', '--margin-bottom', '18mm', '--margin-left', '16mm', '--margin-right', '16mm', '--enable-local-file-access', '--load-error-handling', 'ignore', '--images', 'hypospadias.html', 'Hypospadias_Exam_Guide.pdf' ], capture_output=True, text=True, timeout=120) print('wkhtmltopdf stdout:', result.stdout[:500]) print('wkhtmltopdf stderr:', result.stderr[:500]) print('Exit code:', result.returncode) except Exception as e2: print(f'wkhtmltopdf also failed: {e2}') "

Running Command

which chromium chromium-browser google-chrome-stable google-chrome 2>/dev/null; python3 -c "import reportlab; print('reportlab OK')" 2>/dev/null; python3 -c "import fpdf; print('fpdf OK')" 2>/dev/null; python3 -c "import fpdf2; print('fpdf2 OK')" 2>/dev/null; python3 -c "from xhtml2pdf import pisa; print('xhtml2pdf OK')" 2>/dev/null

Running Command

cd /home/daytona/workspace/hypospadias-pdf && chromium --headless --no-sandbox --disable-gpu --print-to-pdf="Hypospadias_Exam_Guide.pdf" --print-to-pdf-no-header --no-pdf-header-footer "file:///home/daytona/workspace/hypospadias-pdf/hypospadias.html" 2>&1 | tail -5; ls -lh Hypospadias_Exam_Guide.pdf 2>/dev/null && echo "PDF created successfully"

PDF created successfully (9.6 MB with all images). Here it is:

Hypospadias Exam Guide
PDF Document · PDF

The PDF includes everything from the guide:

Cover page with a professional gradient design
All 18 sections with colour-coded headers
All clinical photographs and surgical diagrams from Campbell-Walsh, Bailey & Love, and Hinman's Atlas
All tables (demography, classification, investigations, complications, recent evidence)
Surgery technique cards with step-by-step numbered steps for TIP, MAGPI, Mathieu, OIF, TPIF, Two-stage, and BMG
Management flowchart (text-based, clearly laid out)
Top 20 crisp exam points with numbered bubbles
Recent 2024-2026 PubMed evidence table

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