Good — I have the anatomical foundation from the textbook. Now I'll compile the full, comprehensive clinical guide using both textbook content and evidence-based clinical knowledge.
COMPLETE ASSESSMENT & MANAGEMENT GUIDE
Symphysis Pubis Dysfunction (SPD) | Pelvic Girdle Pain (PGP) | Pubic Diastasis
📌 PART 1: ANATOMY & DEFINITIONS
Pubic Symphysis — Anatomy (Textbook)
The pubic symphysis is a syndesmotic joint containing a fibrocartilage interpubic disc between the two pubic bones. It is reinforced by:
| Ligament | Location | Function |
|---|
| Superior pubic ligament | Attaches to pubic crest → pubic tubercles | Resists superior shear |
| Arcuate (Inferior) pubic ligament | Forms arch under pubic rami | Resists inferior shear |
| Anterior pubic ligament | Connects pubic bones anteriorly | Blends with rectus abdominis, obliques, pyramidalis |
| Posterior pubic ligament | Very small, posterior aspect | Minimal support |
Normal Movement: Small translation + rotation. Movement at pubic symphysis requires simultaneous SIJ movement.
In Pregnancy: Relaxin hormone causes structural changes in the fibrocartilaginous disc → increases symphyseal width and mobility → predisposes to SPD/PGP.
Definitions — Know the Difference
| Condition | Definition |
|---|
| Pelvic Girdle Pain (PGP) | Umbrella term — pain between posterior iliac crest and gluteal fold, with/without radiation to thighs. Includes SIJ + pubic symphysis pain |
| Symphysis Pubis Dysfunction (SPD) | Pain specifically at the pubic symphysis due to hypermobility, ligament laxity, or malalignment |
| Pubic Diastasis | Pathological widening of pubic symphysis gap (>10 mm, or >7 mm in pregnancy) — may occur after delivery or trauma |
| Osteitis Pubis | Inflammatory condition of pubic symphysis — affects postpartum females and athletes |
| Posterior Pelvic Pain (PPP) | Pain posterior to PSIS — SIJ-related component of PGP |
📌 PART 2: SUBJECTIVE ASSESSMENT (HISTORY)
What to Ask — Complete History
Chief Complaint
- Exact location of pain: anterior (pubic area), posterior (sacral/SIJ), groin, inner thigh, perineum?
- Character: sharp, burning, aching, stabbing
- Severity: VAS/NRS (0–10)
- Onset: during pregnancy / after delivery / post-trauma
Aggravating Factors (Typical SPD/PGP Pattern)
Ask specifically about:
- Turning over in bed (most common complaint)
- Going up/down stairs (step-to pattern vs. alternating)
- Walking, especially single-leg loading
- Getting in/out of car (abduction movement)
- Standing on one leg (dressing, stepping)
- Sexual intercourse (dyspareunia — groin/pubic pain)
- Prolonged sitting or standing
- Lifting / carrying
Relieving Factors
- Rest, symmetrical positions, support belt
Obstetric History
- Gestational age (if pregnant)
- Parity, previous deliveries, mode of delivery
- Birth weight, duration of labor, instrumental delivery (forceps)
- History of SPD in previous pregnancy
Red Flags (screen and exclude)
- Bladder/bowel dysfunction
- Saddle anesthesia
- Progressive neurological deficit
- Fever, night sweats (infection/malignancy)
- Trauma (pubic diastasis after delivery)
Functional Impact
- Pelvic Girdle Questionnaire (PGQ): Gold standard outcome measure for PGP
- Activities of daily living limitations
📌 PART 3: OBJECTIVE ASSESSMENT
A. OBSERVATION
Standing Posture
- Increased lumbar lordosis → anterior pelvic tilt → increases stress on pubic symphysis
- Antalgic posture: lateral lean, hip hitching
- Trendelenburg sign: Pelvis drops on unaffected side when standing on affected leg — indicates gluteus medius weakness / SIJ instability
Gait Analysis
- Waddling gait / Penguin gait: Wide-based, short stride, lateral trunk sway — classic SPD
- Antalgic gait: Reduced stance phase on affected side
- Step-to pattern on stairs (cannot alternate legs)
- Observe for: hip drop, trunk rotation, pelvic obliquity
Skin
- Bruising over pubic symphysis (pubic diastasis post-delivery)
- Swelling, tenderness to palpation at pubic symphysis
B. PALPATION
Pubic Symphysis Palpation
- Position: Supine crook lying
- Palpate directly over pubic symphysis (midline, just above genitalia)
- Positive: Point tenderness, or pain radiating to groins/inner thighs
- Note: tenderness over pubic tubercles = adductor tendinopathy component
SIJ Palpation
- Over posterior SIJ (just medial to PSIS)
- Compare bilateral tenderness
PSIS Level Assessment
- Place thumbs on both PSIS
- Note if one is higher/lower → pelvic obliquity / SIJ malalignment
C. RANGE OF MOTION
| Movement | Normal | Findings in SPD/PGP |
|---|
| Hip flexion | 120° | May be restricted/painful on affected side |
| Hip abduction | 45° | Painful — aggravates pubic symphysis |
| Hip ER/IR | 45°/35° | Restricted in SIJ dysfunction |
| Lumbar flexion/extension | Full | May be restricted |
| SLR | 80° | Can be restricted if sciatic component |
📌 PART 4: SPECIAL TESTS — ALL IN DETAIL
🔬 TEST 1: ACTIVE STRAIGHT LEG RAISE (ASLR)
Purpose
Gold standard test for lumbopelvic stability in PGP. Assesses ability to transfer load through pelvis.
Procedure
Position: Supine, legs straight, arms by side
Step 1: Ask patient: "Without bending your knee, can you lift your right leg 20 cm off the bed?"
Step 2: Observe and ask: "How much effort does that take?" Rate on 0–5 scale:
| Score | Description |
|---|
| 0 | Not difficult at all |
| 1 | Minimally difficult |
| 2 | Somewhat difficult |
| 3 | Fairly difficult |
| 4 | Very difficult |
| 5 | Unable to perform |
Step 3: Repeat on other side
Step 4 — Modification (KEY):
- Therapist compresses iliac crests together bilaterally (simulates sacroiliac belt)
- Ask patient to repeat ASLR
- If easier with compression → POSITIVE test → confirms SIJ instability, will benefit from compression belt
Positive: Score ≥1, OR improved with iliac compression
Interpretation:
- Positive ASLR = impaired load transfer through SIJ/pelvis
- Indicates PGP of SIJ origin
- Most sensitive test for PGP (sensitivity 87%, specificity 94%)
🔬 TEST 2: POSTERIOR PELVIC PAIN PROVOCATION TEST (P4 TEST / THIGH THRUST TEST)
Purpose
Identifies posterior pelvic / SIJ pain — most used test in pregnancy-related PGP
Procedure
Position: Supine
Step 1: Flex hip to 90°, knee also flexed (thigh vertical)
Step 2: Stabilize opposite ASIS with one hand (prevents pelvic rotation)
Step 3: Apply firm posterior-directed axial force down through femur toward the table
Step 4: Hold for 5–10 seconds
Positive: Reproduction of familiar posterior pelvic pain (NOT groin or lumbar pain)
Repeat bilaterally and compare
Sensitivity: 80% | Specificity: 79% for SIJ pain in pregnancy
🔬 TEST 3: PATRICK'S TEST (FABER TEST)
Purpose
Assesses SIJ + hip joint pathology. FABER = Flexion, ABduction, External Rotation
Procedure
Position: Supine
Step 1: Place the ankle of the test leg on the opposite thigh just above the knee (figure-4 position)
Step 2: Allow hip to drop into abduction and external rotation passively
Step 3: Stabilize opposite ASIS with one hand, gently press the flexed knee toward the table with other hand
Measurement: Measure distance from lateral aspect of knee to the table
| Distance | Interpretation |
|---|
| Equal bilaterally | Normal |
| Increased on one side | Hip/SIJ restriction that side |
Positive: Pain in groin = hip joint pathology; Pain at posterior SIJ = SIJ dysfunction; Pain at pubic symphysis = SPD
🔬 TEST 4: GAENSLEN'S TEST
Purpose
Stresses both SIJs simultaneously — differentiates bilateral from unilateral SIJ pain
Procedure
Position: Supine, patient moves to edge of table so one leg hangs off edge
Step 1: Flex uninvolved hip fully to chest (stabilizes lumbar spine), held by patient or therapist
Step 2: Allow involved leg to hang freely off table edge into hyperextension
Step 3: Apply gentle overpressure downward on hyperextended leg
Positive: Pain at posterior SIJ on the hyperextended side
Note: Also performed in side-lying — top leg hyperextended at hip
🔬 TEST 5: SACRAL THRUST TEST
Purpose
Direct posterior force on sacrum — stresses both SIJs
Procedure
Position: Prone
Step 1: Therapist places both hands over sacrum
Step 2: Apply firm anterior-directed thrust (downward into table) on sacrum
Positive: Reproduction of familiar posterior pelvic pain bilaterally or unilaterally
🔬 TEST 6: COMPRESSION TEST (SIJ COMPRESSION)
Purpose
Approximates the SIJ — if this RELIEVES pain = SIJ hypermobility
Procedure
Position: Side-lying, knees bent
Step 1: Therapist stands behind patient
Step 2: Place both hands on uppermost iliac crest
Step 3: Apply firm downward (compressive) force through iliac crest toward the table
Positive: Reproduction OR relief of familiar pain
- Pain reproduced = SIJ compression provokes → pathology within joint
- Pain relieved = hypermobile SIJ → will benefit from compression belt
🔬 TEST 7: DISTRACTION TEST (SIJ GAPPING TEST)
Purpose
Gaps the anterior SIJ / stresses the anterior sacroiliac ligaments
Procedure
Position: Supine
Step 1: Cross hands, place over both ASIS
Step 2: Apply firm outward and downward (lateral) pressure on both ASIS simultaneously
Step 3: Hold for 5–10 seconds
Positive: Pain at posterior SIJ or anterior groin
🔬 TEST 8: MENNELL'S TEST (PUBIC SYMPHYSIS SHEAR TEST)
Purpose
Specifically tests pubic symphysis dysfunction — most direct test for SPD
Procedure
Position: Supine
Step 1: Therapist stands beside patient
Step 2: Place one hand firmly over one pubic ramus (stabilize)
Step 3: With other hand, apply upward shear force on the opposite pubic ramus
Step 4: Repeat reversing hands (shear in other direction)
Positive: Pain at pubic symphysis reproduced with shearing movement
This is the MOST SPECIFIC test for SPD/pubic symphysis dysfunction
🔬 TEST 9: MODIFIED TRENDELENBURG TEST
Purpose
Assesses gluteus medius strength and pelvic stability during single-leg stance
Procedure
Position: Standing, facing examiner
Step 1: Patient stands on one leg (affected side)
Step 2: Observe pelvis — does opposite side drop?
Positive: Pelvis drops on non-stance side = Trendelenburg positive
Interpretation in PGP: Positive = gluteus medius weakness / SIJ instability → contributes to PGP
🔬 TEST 10: ONE-LEG STANDING TEST (STORK TEST / GILLET TEST)
Purpose
Assesses SIJ mobility / nutation
Procedure
Position: Standing, examiner behind patient
Step 1: Place one thumb on PSIS, other thumb on S2 spinous process
Step 2: Ask patient to flex the ipsilateral hip (lift knee to chest)
Normal: PSIS moves inferiorly and laterally (SIJ nutates freely)
Positive: PSIS moves superiorly or stays neutral = restricted SIJ movement (hypomobile)
Note: In PGP/SPD → the SIJ may be HYPERMOBILE (no restriction), unlike typical SIJ hypomobility
🔬 TEST 11: LONG DORSAL SACROILIAC LIGAMENT TEST (LDL TEST)
Purpose
Tests integrity of the long dorsal SIJ ligament — specific to PGP
Procedure
Position: Side-lying, hip 60° flexion
Step 1: Palpate just caudal to PSIS (long dorsal SIJ ligament lies here)
Step 2: Apply direct pressure to this ligament
Positive: Pain or tenderness at this site
Clinical Significance: Long dorsal SIJ ligament is frequently tender in pregnancy-related PGP. Tension of this ligament is increased by counternutation (lumbar lordosis) — hence LBP + PGP patients feel worse with prolonged standing.
🔬 TEST 12: PIEDALLU'S TEST (SITTING FLEXION TEST)
Purpose
Assesses iliosacral motion (ilium moving on sacrum)
Procedure
Position: Patient seated on firm surface (eliminates leg length difference)
Step 1: Therapist kneels behind, places thumbs on both PSIS
Step 2: Ask patient to bend forward (flex trunk fully)
Normal: Both PSIS rise equally
Positive: One PSIS rises MORE or EARLIER than other = restricted SIJ on that side
📌 PART 5: MEASUREMENT & GRADING
A. Symphysis Pubis Gap Measurement
- Imaging: Ultrasound or X-ray (flamingo view)
- Normal gap: 4–5 mm in non-pregnant
- Pregnant: up to 7–8 mm acceptable
- SPD diagnosis: >10 mm (or >7 mm with symptoms in pregnancy)
- Pubic diastasis: >10 mm gap post-delivery (some sources: >25 mm = severe diastasis)
B. Pain Severity
- VAS (Visual Analogue Scale): 0–10 cm line
- NRS (Numeric Rating Scale): 0–10 verbal
C. Functional Outcome Measures
| Measure | What It Measures |
|---|
| Pelvic Girdle Questionnaire (PGQ) | Gold standard — 20 items, activity + symptom scales |
| ASLR Score (0–10) | Load transfer ability, bilateral |
| Disability Rating Index (DRI) | Functional disability |
| PGIQ (Patient Global Impression of Change) | Overall treatment response |
D. ASLR Scoring
- Each leg scored 0–5
- Total = 0–10
- Score ≥2 = significant impairment
- Used as primary outcome measure in research
E. Flamingo View (X-ray) — For Pubic Diastasis
- Weight-bearing AP pelvis X-ray
- Patient stands on one leg alternately
- Measure vertical displacement of pubic symphysis
-
2 mm vertical displacement = abnormal (diastasis)
-
5 mm = significant instability
📌 PART 6: CLUSTER OF TESTS — DIAGNOSTIC CRITERIA
European Guidelines (Vleeming et al.) — PGP Diagnosis:
At least one of the following must be positive:
- P4 test (Posterior pelvic pain provocation)
- ASLR test
- Modified Trendelenburg
- Long dorsal SIJ ligament palpation
+ Pain between PSIS and gluteal fold (posterior) with/without groin pain
SPD Specific Diagnosis:
- Pubic symphysis tenderness on palpation
- Mennell's shear test positive
- Pain with hip abduction/ER
- Imaging: gap >10 mm or >7 mm with symptoms
📌 PART 7: PHYSIOTHERAPY MANAGEMENT
A. ACUTE PHASE (Pain Dominant)
1. Rest & Activity Modification
- Avoid: single-leg activities, stairs, prolonged standing, wide-leg opening (getting in/out of car, birth stirrups)
- Teach: "Keep knees together" rule — get in/out of bed as a unit
- Sleeping: pillow between knees in side-lying
2. Pelvic Support Belt / Trochanteric Belt
How to Apply:
- Place belt at level of greater trochanters (NOT at iliac crest — that is a sacral belt)
- Tension: firm but not so tight as to restrict breathing
- Wear: during activity, not at night
- Mechanism: Increases SIJ force closure → reduces shear at pubic symphysis
Two types:
| Belt | Level | Purpose |
|---|
| Trochanteric belt | Greater trochanters | SPD, pubic symphysis |
| Sacroiliac belt | Iliac crest | SIJ pain |
3. Pain Relief Modalities
- TENS: 80–100 Hz over posterior SIJ (sacral electrodes) — safe in pregnancy
- Heat/Ice: Heat over SIJ / ice over pubic symphysis in acute phase
- Hydrotherapy: Pool exercises — offloads pelvic weight
B. STABILIZATION PHASE — EXERCISE PROGRAM
Principle: Restore FORCE CLOSURE of pelvis
(Force closure = compression of SIJ by muscular co-contraction, as opposed to form closure = bony joint geometry)
1. Transverse Abdominis (TA) Activation
Most important muscle for pelvic stability
Position: Crook lying → 4-point kneeling
- Breathe in → breathe out → gently draw lower abdomen in (below umbilicus)
- Hold 10 seconds × 10 repetitions
- NO bracing, NO breath-holding
- Progress to: heel slides, arm lifts while maintaining TA activation
2. Pelvic Floor Muscle Training
- Coordinate PFM contraction with TA
- They co-activate naturally — training one helps the other
- Protocol: PERFECT scheme (as described previously)
3. Gluteus Medius Strengthening (CRITICAL for SIJ stability)
Side-lying hip abduction:
- Side-lying, neutral spine
- Lift top leg to 30–40° (NOT beyond)
- Hold 3–5 seconds × 15 repetitions
- Add ankle weight / Theraband as progression
Clamshell:
- Side-lying, hips 60° flexion, knees stacked
- Rotate top knee upward like a clamshell opening (DO NOT let pelvis roll back)
- 15–20 repetitions
- Critical: keep pelvis still, movement only at hip
4. Gluteus Maximus Strengthening
Bridging (Modified for SPD — KEEP KNEES TOGETHER):
- Crook lying, knees together (not apart — avoids pubic shear)
- Tighten TA and PFM → lift buttocks → hold 5 seconds → lower
- 10–15 repetitions
- Standard bridging with knees apart is CONTRAINDICATED in SPD
Prone hip extension (if comfortable):
- Prone lying → lift one straight leg off bed 10–15 cm
- Hold 3–5 seconds
- Avoid lumbar extension compensation
5. Multifidus Activation
- 4-point kneeling → alternate arm + opposite leg extension (bird-dog)
- Core neutral throughout
- Begin unilateral, progress to full extension
6. Adductor Strengthening (Important for pubic symphysis stability)
- Supine crook lying → squeeze pillow between knees
- Hold 10 seconds × 15 repetitions
- Gentle resistance
C. FUNCTIONAL PHASE — PROGRESSION
Progression Criteria (Before advancing):
- Able to perform ASLR without difficulty
- VAS ≤ 2/10
- Can walk symmetrically for 10 minutes
Exercises:
- Sit-to-stand with neutral pelvis
- Mini wall squats (legs parallel, NOT wide stance)
- Step-ups (small step height)
- Lunges (when fully pain-free)
- Swimming / aqua aerobics (offloads pelvis)
D. MANUAL THERAPY
1. SIJ Manipulation / Mobilization
- Maitland Grade I–II: Pain-relieving oscillations
- Grade III–IV: Stretching — use only when hypomobile SIJ identified
- CONTRAINDICATED in pregnancy with hypermobile SIJ — do not manipulate hypermobile joint
2. Muscle Energy Technique (MET) — For SIJ Malalignment
Posterior Innominate Correction:
- Patient supine, hip flexed to 90°
- Therapist resists hip extension isometrically (patient pushes toward extension, therapist resists)
- 5-second hold × 3 repetitions
- After each contraction, move into new range
Anterior Innominate Correction:
- Hip extended off table → patient resists hip flexion
- Corrects anteriorly rotated ilium
3. Soft Tissue Therapy
- Piriformis release (often tight with SIJ dysfunction)
- Hip flexor (iliopsoas) stretch — tight iliopsoas increases anterior pelvic tilt → increases SIJ/pubic shear
- Adductor release (adductor longus commonly tender with SPD)
E. SPECIFIC MANAGEMENT: PUBIC DIASTASIS POST-DELIVERY
Immediate Management (Hospital):
- Compression: Apply trochanteric belt immediately
- Rest: Bed rest, minimal ambulation
- Log-rolling technique: Patient must roll to side as a unit to get out of bed — do NOT allow trunk rotation
- Commode at bedside: Avoid long walks
- Urinary catheter may be needed if walking to toilet painful
Positioning:
- Side-lying with pillow between knees
- Avoid lithotomy position, stirrups
- Avoid hip abduction beyond neutral
Physiotherapy Progression for Diastasis:
| Phase | Timeline | Exercises |
|---|
| Phase 1 | Days 1–3 | Foot pumps, breathing, PFM, compression belt |
| Phase 2 | Days 4–7 | TA activation, bed mobility with log roll, standing with belt |
| Phase 3 | Week 2–4 | Bilateral bridging (knees together), gentle walking program |
| Phase 4 | Week 4–6 | Clamshell, TA progression, hydrotherapy |
| Phase 5 | Week 6+ | Full program, return to function |
Surgical Management Indication (Refer):
- Diastasis >25 mm with severe instability
- Failed conservative treatment
- ORIF (Open Reduction Internal Fixation) with plate/screws — physiotherapy continues post-op
📌 PART 8: PATIENT EDUCATION — WHAT TO TEACH
"10 Golden Rules for SPD/PGP" — Teach Patient:
- Keep knees together when getting in/out of bed, turning over, getting in/out of car
- Sit to put on underwear/trousers — do NOT stand on one leg
- Take small equal steps when walking — avoid stride length difference
- Sit to bottom of stairs, use rail, place both feet on each step
- Avoid carrying on one hip
- Do not push through pain — pain is a signal
- Wear supportive footwear — no high heels
- Sleep in side-lying with pillow between knees
- Wear pelvic belt during activity — not at night
- Avoid activities that open legs wide: swimming breaststroke, sitting cross-legged, squatting wide
📌 PART 9: DIFFERENTIAL DIAGNOSIS
| Condition | Key Differentiating Features |
|---|
| SPD | Anterior pubic pain, Mennell's test +ve, pain with hip abduction |
| SIJ Dysfunction | Posterior pain, P4 test +ve, ASLR +ve |
| Lumbar disc | Dermatomal radiation, neurological signs, worsens with flexion |
| Hip OA | Groin pain, reduced hip IR, FABER test +ve for groin |
| Osteitis pubis | Athletes, postpartum, bone marrow edema on MRI |
| Pubic diastasis | Gap >10 mm on imaging, history of delivery/trauma |
| Round ligament pain | Sharp groin pain, fleeting, 2nd trimester, no joint signs |
📌 PART 10: SUMMARY TABLE — ALL SPECIAL TESTS
| Test | Position | What It Tests | Positive = |
|---|
| ASLR | Supine | Lumbopelvic load transfer | Difficulty lifting leg; improved with compression |
| P4 / Thigh Thrust | Supine, hip 90° | Posterior SIJ pain | Familiar posterior pelvic pain |
| FABER / Patrick's | Supine, figure-4 | SIJ + hip | Pain posterior = SIJ; groin = hip; pubic = SPD |
| Gaenslen's | Supine/side-lying, leg off table | SIJ | Pain at posterior SIJ on hyperextended side |
| Sacral Thrust | Prone | Bilateral SIJ stress | Familiar posterior pelvic pain |
| Compression Test | Side-lying | SIJ mobility | Pain reproduced OR relieved |
| Distraction Test | Supine | Anterior SIJ ligaments | Posterior SIJ or groin pain |
| Mennell's (Shear) | Supine | Pubic symphysis | Pubic symphysis pain reproduced — SPECIFIC for SPD |
| Trendelenburg | Standing | Gluteus medius / pelvic stability | Pelvis drops on non-stance side |
| Stork / Gillet | Standing | SIJ nutation | PSIS fails to move inferiorly |
| LDL Palpation | Side-lying | Long dorsal SIJ ligament | Tenderness caudal to PSIS |
| Piedallu's | Sitting | Iliosacral motion | One PSIS rises earlier/higher on trunk flexion |
📌 QUICK EXAM SUMMARY
For SPD: Mennell's shear test + pubic palpation tenderness + pain with FABER = SPD confirmed
For PGP (SIJ): P4 test + ASLR + LDL palpation = PGP confirmed
For Pubic Diastasis: Clinical + imaging (>10 mm gap) + history of delivery
Most Important Tests to Know by Heart:
- ASLR (with compression modification)
- P4 / Thigh Thrust
- Mennell's Shear Test
- Trendelenburg
- FABER
Most Important Exercises:
- TA activation
- Clamshell (Gmed)
- Bridging with knees together (NOT apart)
- PFM training
- Adductor squeeze