Sets of questions on orthopedic and trauma 1 on introduction, historical background of it , diagnosis and treatment of orthopedic disorders and common questions on fractures from basics exam wise mcqs and saqs

Reading File

Now let me search the library for orthopedic and trauma content in parallel:

Finding Sources

Excellent - three top orthopedic textbooks available. Let me search all key topic areas in parallel:

Finding Sources

Now let me read key sections in parallel - orthopedic intro/history, assessment, treatment, and fracture content:

Reading File

Now let me search for the specific intro/history of orthopedics and fracture basics content:

Finding Sources

Reading File

I now have sufficient information from the library plus my comprehensive medical knowledge. Let me compile the full question set:Here is the complete question bank drawn from Campbell's Operative Orthopaedics 15th Ed 2026, Miller's Review of Orthopaedics 9th Ed, Rockwood and Green's Fractures in Adults 10th Ed 2025, and Bailey & Love's Short Practice of Surgery 28th Ed.

ORTHOPEDICS & TRAUMA - UNIT 1

Complete MCQ & SAQ Bank for Exam Preparation

SECTION A: INTRODUCTION & HISTORICAL BACKGROUND OF ORTHOPEDICS

MCQs

Q1. The term "Orthopaedics" was coined by:

A) Hippocrates
B) Nicholas Andry
C) John Hunter
D) Sir Astley Cooper

Answer: B - Nicholas Andry Explanation: Nicholas Andry, a French physician, coined the term "Orthopaedia" in his 1741 book L'Orthopedie. The word derives from the Greek words orthos (straight/correct) and pais/paidos (child), literally meaning "straight child." The famous crooked tree tied to a stake - the Orthopaedic tree - is taken from that book.

Q2. The word "Orthopaedics" is derived from Greek words meaning:

A) Bone + Surgery
B) Straight + Child
C) Joint + Disease
D) Limb + Correction

Answer: B - Straight + Child Explanation: From orthos (straight) + paidos (child). Andry intended the specialty to address deformities in children.

Q3. The first dedicated orthopedic hospital was established in:

A) London, England
B) Paris, France
C) Geneva, Switzerland
D) Edinburgh, Scotland

Answer: C - Geneva, Switzerland Explanation: The first orthopedic hospital, l'Institution Orthopedique, was founded in Geneva in 1780 by Jean-Andre Venel, who is considered the father of orthopedics as a surgical specialty.

Q4. Which of the following is considered the "Father of Modern Orthopaedic Surgery"?

A) Nicholas Andry
B) Jean-Andre Venel
C) Hugh Owen Thomas
D) Robert Jones

Answer: C - Hugh Owen Thomas Explanation: Hugh Owen Thomas (1834-1891) of Liverpool is widely regarded as the father of modern orthopedic surgery. He invented the Thomas splint, which dramatically reduced mortality from femoral fractures in World War I from ~80% to ~20%.

Q5. The Thomas splint was primarily designed for:

A) Tibial fractures
B) Fractures of the femur
C) Humeral fractures
D) Spinal injuries

Answer: B - Fractures of the femur Explanation: The Thomas splint was designed by Hugh Owen Thomas for immobilization of femoral shaft fractures. During World War I, its use by Robert Jones reduced femoral fracture mortality from approximately 80% to 20%.

Q6. Plaster of Paris (POP) was introduced into orthopedic practice by:

A) Hugh Owen Thomas
B) Antonius Mathijsen
C) Lorenz Bohler
D) Ernst von Bergmann

Answer: B - Antonius Mathijsen Explanation: Dutch military surgeon Antonius Mathijsen introduced plaster of Paris bandages in 1852 for fracture immobilization, revolutionizing conservative fracture management.

Q7. The AO (Arbeitsgemeinschaft fur Osteosynthesefragen) group was founded in:

A) 1938
B) 1958
C) 1968
D) 1978

Answer: B - 1958 Explanation: The AO group was founded in 1958 in Biel, Switzerland by a group of Swiss surgeons including Maurice Muller, Martin Allgower, Robert Schneider, and Hans Willenegger. They developed systematic principles for operative fracture fixation (ORIF).

Q8. The four AO principles of fracture management include all of the following EXCEPT:

A) Anatomic reduction
B) Stable internal fixation
C) Preservation of blood supply
D) Delayed weight bearing

Answer: D - Delayed weight bearing Explanation: The four AO principles are: (1) Anatomic reduction of fracture fragments, (2) Stable internal fixation, (3) Preservation of the blood supply (soft tissues and bone), and (4) Early, active mobilization of the patient and injured extremity. Early - not delayed - mobilization is the goal.

Q9. Intramedullary nailing for femoral shaft fractures was pioneered by:

A) Robert Jones
B) Gerhard Kuntscher
C) John Charnley
D) Paul Harrington

Answer: B - Gerhard Kuntscher Explanation: Gerhard Kuntscher (German surgeon) developed the intramedullary nail (IM nail) in 1939-1940, first used extensively during World War II. His design revolutionized femoral fracture treatment.

Q10. The first successful total hip replacement (THR) was performed by:

A) Austin Moore
B) Frederick Thompson
C) Sir John Charnley
D) Philip Wiles

Answer: C - Sir John Charnley Explanation: Sir John Charnley performed the first low-friction arthroplasty (total hip replacement) in 1962 at Wrightington Hospital, UK. He used a small femoral head (22mm), UHMWPE acetabular cup, and acrylic bone cement - a design still influential today.

Q11. The "Edinburgh classification" is associated with:

A) Clavicle fractures
B) Tibial plateau fractures
C) Spine injuries
D) Distal radius fractures

Answer: A - Clavicle fractures Explanation: The Edinburgh (Allman/Robinson) classification categorizes clavicle fractures into groups based on location (medial, midshaft, lateral) and displacement, guiding management decisions.

Q12. Hippocrates' contribution to orthopedics is best remembered for:

A) Description of gout
B) Reduction techniques for shoulder dislocation
C) Introduction of splints
D) Both A and B

Answer: D - Both A and B Explanation: Hippocrates described reduction techniques for shoulder dislocations (Hippocratic method) and is among the earliest to describe gout as a distinct condition. He also used wooden splints and bandaging for fractures.

SECTION B: DIAGNOSIS OF ORTHOPEDIC DISORDERS

MCQs

Q13. The most important initial step in evaluating an orthopedic patient is:

A) Ordering X-rays immediately
B) Taking a detailed history
C) Performing an MRI
D) Blood tests

Answer: B - Taking a detailed history Explanation: A thorough history including onset, nature of pain, mechanism of injury, duration, aggravating/relieving factors, and functional limitations forms the cornerstone of orthopedic diagnosis - as emphasized in Campbell's Operative Orthopaedics.

Q14. The cardinal sign that distinguishes compartment syndrome from other post-fracture pain is:

A) Pallor
B) Pain out of proportion to injury, worsened by passive muscle stretch
C) Pulselessness
D) Paresthesia

Answer: B - Pain out of proportion to injury, worsened by passive muscle stretch Explanation: Pain on passive stretch of muscles in the affected compartment is the earliest and most reliable sign of compartment syndrome. The 6 Ps (Pain, Pressure, Paralysis, Paresthesia, Pallor, Pulselessness) occur in sequence - pulselessness is a very late sign indicating irreversible ischemia. (Bailey & Love, p. 348)

Q15. Compartment pressure at which fasciotomy is indicated (absolute threshold):

A) >10 mmHg
B) >20 mmHg
C) >30 mmHg
D) >50 mmHg

Answer: C - >30 mmHg Explanation: Fasciotomy is indicated when compartment pressure exceeds 30 mmHg, or when the difference between diastolic blood pressure and compartment pressure (delta-P) is <30 mmHg. Normal compartment pressure is 0-8 mmHg.

Q16. The Ottawa Ankle Rules are used to determine the need for:

A) MRI in ankle sprains
B) X-ray in ankle injuries
C) Doppler ultrasound
D) Compartment pressure measurement

Answer: B - X-ray in ankle injuries Explanation: Ottawa Ankle Rules guide selective use of radiographs after ankle/foot injury. X-ray is needed if there is pain near the malleoli AND inability to bear weight for 4 steps, OR bony tenderness at posterior edge/tip of malleoli or at navicular/base of 5th metatarsal.

Q17. The Trendelenburg test assesses the function of which muscle?

A) Quadriceps
B) Gluteus maximus
C) Gluteus medius
D) Iliopsoas

Answer: C - Gluteus medius Explanation: A positive Trendelenburg sign (pelvis drops on the opposite side when standing on one leg) indicates weakness of the ipsilateral hip abductors, primarily gluteus medius. Causes include hip OA, CDH, femoral neck fracture, and superior gluteal nerve palsy.

Q18. Thomas test is used to detect:

A) Hip abductor weakness
B) Fixed flexion deformity of the hip
C) Hip joint effusion
D) Lateral instability of the knee

Answer: B - Fixed flexion deformity of the hip Explanation: In the Thomas test, the patient lies supine. The contralateral hip is fully flexed (flattening lumbar lordosis). The angle the tested leg makes with the bed = degree of fixed flexion deformity (FFD) at the hip.

Q19. McMurray's test is used to diagnose:

A) ACL tear
B) Meniscal tear
C) PCL tear
D) Patellar instability

Answer: B - Meniscal tear Explanation: McMurray's test: with the patient supine, the knee is fully flexed. The examiner applies valgus/varus stress with internal/external rotation while extending the knee. A palpable or audible "click" with pain indicates a meniscal tear.

Q20. Lachman's test is superior to the anterior drawer test for detecting ACL tears because:

A) It is performed in full extension
B) It tests at 20-30 degrees flexion, eliminating hamstring guarding
C) It uses rotational forces
D) It is less painful for the patient

Answer: B - It tests at 20-30 degrees flexion, eliminating hamstring guarding Explanation: The anterior drawer test is performed at 90 degrees flexion, where hamstring muscle guarding can give a false negative. Lachman's test at 20-30 degrees has sensitivity ~85% and specificity ~94% for ACL tears.

Q21. The "bulge sign" or "balloon test" is used to detect:

A) Meniscal tears
B) Knee joint effusion (small amount)
C) Patellar fracture
D) Collateral ligament tear

Answer: B - Knee joint effusion (small amount) Explanation: The bulge sign detects small effusions (<10mL). The medial gutter is stroked upward (emptied), then the lateral side is tapped - a fluid bulge reappears medially. The patella tap (patellar ballottement) detects larger effusions (>30mL).

Q22. Which radiographic view is best for detecting a scaphoid fracture?

A) AP wrist
B) Lateral wrist
C) Scaphoid view (ulnar deviated AP)
D) Oblique wrist

Answer: C - Scaphoid view (ulnar deviated AP) Explanation: Ulnar deviation extends the scaphoid, making fractures more visible. However, initial X-rays miss ~20% of scaphoid fractures. MRI is the gold standard for suspected scaphoid fractures with normal X-rays.

Q23. Velocity of nerve conduction is reduced in which condition?

A) Neuropraxia
B) Axonotmesis
C) Neurotmesis
D) All of the above

Answer: D - All of the above Explanation: Nerve conduction velocity (NCV) studies: reduced velocity = demyelinating neuropathy. Seddon's classification: Neuropraxia (conduction block, intact axon), Axonotmesis (axon disrupted, endoneurium intact), Neurotmesis (complete nerve disruption). EMG/NCV differentiates these.

Q24. Which imaging modality is MOST sensitive for detecting occult fractures?

A) Plain X-ray
B) CT scan
C) MRI
D) Bone scan

Answer: C - MRI Explanation: MRI (particularly STIR sequences) is the most sensitive modality for occult fractures (e.g., scaphoid, femoral neck, stress fractures) - detecting marrow edema within hours of injury. Bone scan is sensitive but less specific and takes 48-72 hours to become positive.

SECTION C: TREATMENT OF ORTHOPEDIC DISORDERS

MCQs

Q25. The primary goal of fracture management is:

A) Anatomic reduction at all costs
B) Union of fracture with restoration of function
C) Operative fixation
D) Immobilization in cast for 6 weeks

Answer: B - Union of fracture with restoration of function Explanation: The fundamental goal is bony union with restoration of full limb function. The means (conservative vs. operative) depend on fracture pattern, patient factors, and functional demands.

Q26. The best method of treating a displaced femoral neck fracture in an 80-year-old patient is:

A) Conservative management
B) Dynamic hip screw (DHS)
C) Cannulated screws
D) Hemiarthroplasty

Answer: D - Hemiarthroplasty Explanation: In elderly patients (>65-70 years) with displaced femoral neck fractures (Garden III/IV), hemiarthroplasty is preferred because: avascular necrosis (AVN) rate after internal fixation is >30%, non-union risk is high, and arthroplasty gives faster mobilization. Total hip replacement (THR) is preferred in active patients with pre-existing acetabular arthritis.

Q27. Dynamic Hip Screw (DHS) is the standard treatment for:

A) Femoral neck fractures
B) Intertrochanteric fractures
C) Subtrochanteric fractures
D) Femoral shaft fractures

Answer: B - Intertrochanteric fractures Explanation: DHS (or sliding hip screw) is the gold standard for stable intertrochanteric fractures. The lag screw slides along the barrel allowing controlled compression at the fracture site. For unstable patterns, a cephalomedullary nail (e.g., PFNA, Gamma nail) is preferred.

Q28. External fixation is BEST indicated for:

A) Simple transverse tibial fractures
B) Open (Gustilo Grade III) tibial fractures with contamination
C) Closed femoral shaft fractures
D) Undisplaced fractures of the radius

Answer: B - Open (Gustilo Grade III) tibial fractures with contamination Explanation: External fixators provide temporary stabilization in open fractures with gross contamination, allowing wound management before definitive fixation. They are also used in polytrauma (damage control orthopedics), infected fractures, and periarticular injuries.

Q29. The management of a minimally displaced distal radius fracture in a young adult is:

A) Open reduction and plating
B) Percutaneous K-wire fixation
C) Below-elbow POP cast for 6 weeks
D) Sling only

Answer: C - Below-elbow POP cast for 6 weeks Explanation: Minimally displaced or undisplaced distal radius fractures in young adults are managed conservatively with a below-elbow cast for 5-6 weeks, with repeat X-rays at 1-2 weeks to check for displacement. Operative treatment (volar locking plate) is reserved for displaced, unstable, or intra-articular fractures.

Q30. Which of the following is NOT an absolute indication for operative fracture fixation?

A) Open fracture
B) Vascular injury requiring repair
C) Pathological fracture
D) A hairline stress fracture

Answer: D - A hairline stress fracture Explanation: Stress fractures are generally treated conservatively (activity modification, protected weight bearing). Absolute operative indications include: open fractures, fractures with vascular injury, polytrauma, pathological fractures, and fractures that cannot be reduced/held by conservative means.

Q31. The most common complication of prolonged immobilization in a plaster cast is:

A) Malunion
B) Joint stiffness (contracture)
C) Osteomyelitis
D) Refracture

Answer: B - Joint stiffness (contracture) Explanation: Prolonged immobilization leads to capsular contracture, periarticular fibrosis, and muscle wasting. This is why early mobilization is a fundamental AO principle. Other complications include DVT, pressure sores, disuse osteoporosis, and cast syndrome.

Q32. Continuous passive motion (CPM) after knee replacement helps to:

A) Prevent DVT
B) Restore range of motion and prevent stiffness
C) Reduce infection rate
D) Enhance bone ingrowth

Answer: B - Restore range of motion and prevent stiffness Explanation: CPM machines keep the joint moving passively during early post-operative recovery, preventing intra-articular adhesions and promoting cartilage nutrition. Early ambulation and physiotherapy remain the mainstay of rehabilitation post-TKR.

SECTION D: FRACTURES - BASICS

MCQs

Q33. A fracture is defined as:

A) Complete loss of bone continuity only
B) Disruption in the structural integrity of bone (complete or incomplete)
C) A break only caused by trauma
D) Displacement of bone fragments

Answer: B - Disruption in the structural integrity of bone (complete or incomplete) Explanation: A fracture is a break in the continuity of bone. It may be complete (through both cortices) or incomplete (greenstick, torus/buckle fractures in children). It does not require displacement.

Q34. A "Greenstick fracture" occurs in:

A) Elderly patients with osteoporosis
B) Children, where one cortex breaks and the other bends
C) Stress fractures from repetitive loading
D) Pathological fractures from metastases

Answer: B - Children, where one cortex breaks and the other bends Explanation: Greenstick fractures occur in children because their bones are more flexible (higher ratio of collagen). The fracture is incomplete - one cortex breaks and the other deforms (like a green twig). They heal rapidly due to the thick periosteum in children.

Q35. Which of the following fractures is MOST associated with non-union?

A) Colle's fracture
B) Fracture of the waist of scaphoid
C) Fracture of the clavicle midshaft
D) Fracture of distal fibula

Answer: B - Fracture of the waist of scaphoid Explanation: The scaphoid has a retrograde blood supply (enters distally). Fractures of the waist or proximal pole interrupt the blood supply to the proximal fragment, leading to AVN and non-union rates of up to 30-40% if untreated. This is why prompt diagnosis (MRI) and sometimes fixation are essential.

Q36. A "Pathological fracture" occurs in bone that is:

A) Previously fractured
B) Weakened by pre-existing disease
C) Subject to repetitive stress
D) Under-mineralized in children

Answer: B - Weakened by pre-existing disease Explanation: Pathological fractures occur through abnormal bone. Common causes include: metastatic carcinoma (breast, lung, prostate, kidney, thyroid - remember "BLarT KiTney"), multiple myeloma, osteoporosis, Paget's disease, primary bone tumors, and bone cysts.

Q37. A stress fracture differs from a traumatic fracture in that it:

A) Involves only cancellous bone
B) Results from cumulative sub-threshold repetitive loading
C) Always shows on initial X-ray
D) Occurs only in elderly patients

Answer: B - Results from cumulative sub-threshold repetitive loading Explanation: Stress (fatigue) fractures result from repetitive loading that overwhelms the bone's remodeling capacity. They are common in military recruits (march fractures - 2nd metatarsal), runners (tibial/femoral stress fractures), and athletes. Initial X-ray is often normal; MRI or bone scan is diagnostic.

Q38. The Gustilo-Anderson classification is used for:

A) Closed fractures
B) Open fractures
C) Intra-articular fractures
D) Pediatric fractures

Answer: B - Open fractures Explanation: Gustilo-Anderson classification (1976, revised 1984):

Grade I: Wound <1cm, clean, low-energy
Grade II: Wound 1-10cm, moderate contamination
Grade IIIA: Wound >10cm, adequate soft-tissue coverage
Grade IIIB: Wound >10cm with periosteal stripping, bone exposure, requires flap
Grade IIIC: Any open fracture with vascular injury requiring repair

Q39. The correct sequence of fracture healing is:

A) Inflammatory → Soft callus → Hard callus → Remodeling
B) Soft callus → Hard callus → Inflammatory → Remodeling
C) Inflammatory → Hard callus → Soft callus → Remodeling
D) Remodeling → Inflammatory → Soft callus → Hard callus

Answer: A - Inflammatory → Soft callus → Hard callus → Remodeling Explanation: Stages of secondary (indirect) fracture healing:

Hematoma/Inflammatory phase (0-7 days): hematoma forms, inflammatory cells recruited, cytokines released
Soft callus (1-3 weeks): fibroblasts and chondroblasts produce fibrocartilaginous callus
Hard callus (3-12 weeks): enchondral ossification converts soft callus to woven bone
Remodeling (months-years): woven bone remodeled to lamellar bone by osteoclasts/osteoblasts (Wolff's law)

Q40. Primary (direct) bone healing occurs when:

A) A cast is applied
B) Absolute stability is achieved (interfragmentary strain <2%)
C) Intramedullary nail is used
D) Fracture is in cancellous bone

Answer: B - Absolute stability is achieved (interfragmentary strain <2%) Explanation: Primary (direct/contact) bone healing occurs with absolute stability (e.g., compression plating with lag screws). Osteoclast cutting cones cross the fracture directly - NO callus forms. This is also called Haversian remodeling. Secondary bone healing with callus formation occurs with relative stability (IM nail, cast, functional bracing).

Q41. According to Wolff's law:

A) Bone heals in proportion to its blood supply
B) Bone remodels in response to mechanical stress applied to it
C) Fractures heal faster in children
D) Cancellous bone heals faster than cortical bone

Answer: B - Bone remodels in response to mechanical stress applied to it Explanation: Wolff's Law (Julius Wolff, 1892) states that bone adapts its structure (adds bone under stress, removes bone with disuse) in response to the mechanical loads it bears. This is the basis for weight-bearing rehabilitation, functional bracing, and the rationale for early mobilization.

Q42. Which of the following is the MOST important factor delaying fracture healing?

A) Age of patient
B) Type of bone (cancellous vs. cortical)
C) Infection at fracture site
D) Gender

Answer: C - Infection at fracture site Explanation: Infection is the single most important cause of non-union and delayed union. It leads to osteolysis, implant failure, and avascular necrosis of fragments. Other factors: impaired blood supply, excess mobility, bone loss, corticosteroids, NSAIDs, smoking, diabetes, and radiation.

Q43. Avascular necrosis (AVN) is MOST commonly associated with fractures of which bone?

A) Distal fibula
B) Femoral neck
C) Distal radius
D) Medial malleolus

Answer: B - Femoral neck Explanation: AVN after femoral neck fractures results from disruption of the medial femoral circumflex artery (main blood supply to femoral head). AVN rate is up to 20-30% in displaced fractures. Other bones prone to AVN: scaphoid (proximal pole), talus (body), lunate (Kienbock's disease), humeral head.

Q44. An open fracture should receive prophylactic IV antibiotics within:

A) 6 hours
B) 3 hours
C) 1 hour
D) As soon as the patient arrives

Answer: C - 1 hour Explanation: Current BOAST/NICE guidelines (UK) and EAST guidelines (US) recommend IV antibiotics (co-amoxiclav or cefazolin) within 1 hour of hospital arrival for open fractures. Tetanus prophylaxis must also be given. Debridement should occur within 6-24 hours depending on grade and contamination.

Q45. The "Rule of Nines" applies to:

A) Fracture severity scoring
B) Burn surface area estimation
C) Spinal cord injury levels
D) Peripheral nerve injury grading

Answer: B - Burn surface area estimation Explanation: Wallace's Rule of Nines estimates total body surface area (TBSA) burned. This is relevant in orthopedic/trauma as burn patients frequently have concurrent fractures.

Q46. In a long bone shaft fracture, which structure's integrity is the MOST critical for healing?

A) Endosteum
B) Periosteum
C) Medullary cavity
D) Articular cartilage

Answer: B - Periosteum Explanation: The periosteum is the major source of osteoprogenitor cells (stem cells) for fracture healing. A thick, intact periosteum (as in children) facilitates rapid union. Stripping of periosteum (as in high-energy fractures or injudicious surgery) significantly impairs healing.

Q47. A fracture where the bone fragments interlock and are stable without tendency to displace is called:

A) Comminuted
B) Impacted
C) Avulsion
D) Depressed

Answer: B - Impacted Explanation: Impacted fractures have fragments driven into each other (telescoped). They are inherently stable but must be watched for secondary displacement. Common examples: impacted femoral neck fractures (Garden I), impacted proximal humerus fractures.

Q48. A fracture where bone is pulled off by the attached tendon or ligament is called:

A) Stress fracture
B) Pathological fracture
C) Avulsion fracture
D) Spiral fracture

Answer: C - Avulsion fracture Explanation: Avulsion fractures occur when muscle contraction or ligament tension pulls off a bony fragment at its insertion. Examples: Mallet finger (terminal extensor tendon avulsion at distal phalanx), anterior inferior iliac spine (AIIS) avulsion by rectus femoris, 5th metatarsal base (peroneus brevis avulsion).

Q49. Which nerve is most commonly injured in a fracture of the surgical neck of the humerus?

A) Radial nerve
B) Ulnar nerve
C) Axillary (circumflex) nerve
D) Musculocutaneous nerve

Answer: C - Axillary (circumflex) nerve Explanation: The axillary nerve winds around the surgical neck of the humerus and is the most commonly injured nerve with proximal humerus fractures and anterior shoulder dislocations. Clinically: loss of deltoid function (shoulder abduction) and sensory loss over the regimental badge area (lateral shoulder).

Q50. The "unhappy triad" of O'Donoghue following a valgus force to the knee involves:

A) ACL + medial meniscus + MCL
B) ACL + lateral meniscus + LCL
C) PCL + lateral meniscus + MCL
D) ACL + PCL + MCL

Answer: A - ACL + medial meniscus + MCL Explanation: O'Donoghue's unhappy triad (now called "terrible triad"): valgus-external rotation force tears the ACL, medial collateral ligament (MCL), and medial meniscus. More recent evidence shows the LATERAL meniscus is actually injured more commonly with ACL tears, but the classic examination answer remains: ACL + MCL + medial meniscus.

SHORT ANSWER QUESTIONS (SAQs)

SAQ 1. Describe the historical development of orthopedic surgery, mentioning key pioneers and their contributions. (8 marks)

Model Answer:

Origin of the term (2 marks):

"Orthopaedics" coined by Nicholas Andry in his 1741 book L'Orthopedie, from Greek orthos (straight) + paidion (child). The crooked-tree-and-stake symbol originated here.

Key pioneers (4 marks - 1 each):

Jean-Andre Venel (1780): Founded the first orthopedic hospital in Geneva; considered father of orthopedics as a specialty. Developed conservative methods for clubfoot.
Hugh Owen Thomas (1834-1891): "Father of modern orthopaedics" - invented the Thomas splint. His principle: "Rest, enforced, uninterrupted, and prolonged" for injured joints.
Sir Robert Jones (WWI era): Nephew and student of Thomas; introduced the Thomas splint widely in WWI, reducing femoral fracture mortality from ~80% to ~20%.
Sir John Charnley (1962): Performed first successful low-friction total hip arthroplasty at Wrightington; introduced UHMWPE cup and bone cement.
AO Group (1958): Maurice Muller, Allgower, Schneider, Willenegger; systematized principles of operative fracture fixation; standardized implants globally.

Technological milestones (2 marks):

Plaster of Paris bandages (Mathijsen, 1852)
Intramedullary nailing (Kuntscher, 1940)
Image intensifier, arthroscopy, locking plates, computer navigation

SAQ 2. What are the clinical features and complications of compartment syndrome following a fracture? (6 marks)

Model Answer:

Definition: Raised pressure within a closed osseofascial compartment compromising perfusion to muscles and nerves.

Clinical features (3 marks) - The 6 Ps:

Pain - out of proportion to the injury (earliest sign)
Pain on passive stretch - most reliable early sign
Pressure - tense, woody compartment on palpation
Paresthesia - tingling, numbness (nerve ischemia)
Paralysis - weakness of muscles in compartment (late)
Pulselessness and Pallor - LATE signs indicating irreversible ischemia (Bailey & Love, p. 348)

Diagnosis:

Compartment pressure >30 mmHg, or delta-P (diastolic BP - compartment pressure) <30 mmHg

Complications if untreated (3 marks):

Volkmann's ischemic contracture - fibrosis and contracture of ischemic muscles (most common in forearm)
Nerve damage - permanent sensory/motor deficit
Infection/gangrene - myonecrosis with secondary infection
Renal failure - myoglobinuria from rhabdomyolysis
Amputation - in severe/delayed cases

Management: Emergency fasciotomy of all compartments, wound left open, delayed primary closure at 48-72 hours.

SAQ 3. Classify fractures and describe the stages of fracture healing. (8 marks)

Model Answer:

Classification of Fractures (4 marks):

By skin integrity:

Closed (simple) - skin intact
Open (compound) - skin breach communicating with fracture (Gustilo-Anderson I, II, IIIA, IIIB, IIIC)

By pattern:

Transverse, oblique, spiral, comminuted (>2 fragments), segmental, impacted, avulsion, compressed

By displacement:

Undisplaced, displaced (angulated, translated, rotated, shortened)

By completeness:

Complete (both cortices), incomplete (greenstick, torus/buckle, stress)

By causation:

Traumatic, pathological, stress/fatigue

Stages of Fracture Healing (4 marks):

Inflammatory/Hematoma phase (0-7 days): Fracture hematoma forms. Inflammatory cells (macrophages, neutrophils) infiltrate. Cytokines (IL-1, IL-6, TNF-alpha, TGF-beta, PDGF) released. Angiogenesis begins. Osteoprogenitor cells migrate from periosteum.
Soft callus formation (1-3 weeks): Fibroblasts and chondroblasts produce fibrocartilaginous (soft) callus bridging the fracture ends. Pain diminishes. Fracture becomes "rubbery" - no longer completely unstable.
Hard callus (woven bone) (3-12 weeks): Enchondral ossification converts fibrocartilage to woven bone (callus). X-ray shows callus. Fracture clinically united.
Remodeling (months - years): Osteoclasts resorb woven bone; osteoblasts lay down lamellar bone. Bone remodels according to Wolff's Law - medullary canal re-establishes. Eventual restoration of original bone contour.

SAQ 4. What are the factors affecting fracture healing and define malunion, delayed union, and non-union? (6 marks)

Model Answer:

Factors impairing fracture healing (3 marks):

Local factors:

Infection (most important) - osteolysis, avascular necrosis
Impaired blood supply (AVN)
Excess mobility at fracture site
Bone loss (gap >1cm in cortical bone)
Periosteal stripping
Soft tissue interposition
High-energy/comminuted fractures

Systemic factors:

Advanced age
Smoking (vasoconstriction, impairs angiogenesis)
Diabetes mellitus
Malnutrition (Vitamin D, C deficiency)
Corticosteroids, NSAIDs
Radiation (impairs osteogenesis)
Anaemia, hypothyroidism

Definitions (3 marks):

Malunion: Fracture heals but in an unacceptable position (angulation >5-10 degrees depending on site, shortening, rotation, or deformity). May require corrective osteotomy.
Delayed union: Fracture has not united in the expected time for that bone and fracture type (e.g., tibial shaft - normal union 16-24 weeks; >24 weeks = delayed union). Callus is present but healing is slow. Often converts to union with continued management.
Non-union: Fracture has completely ceased healing with no evidence of radiological progress. By definition, after 6 months with no signs of union. Types:

Hypertrophic (elephant foot, horse hoof): adequate blood supply, excessive callus, needs stability
Atrophic (oligotrophic): poor vascularity, no callus, needs bone graft + stabilization
Infected (septic): requires eradication of infection first

SAQ 5. Define and classify open fractures (Gustilo-Anderson). What are the principles of management? (6 marks)

Model Answer:

Definition: An open (compound) fracture is one where a breach in the skin overlies the fracture, creating communication between the fracture and the external environment. This dramatically increases the risk of infection and osteomyelitis.

Gustilo-Anderson Classification (2 marks):

Grade	Wound	Energy	Features
I	<1 cm	Low	Clean wound, minimal contamination
II	1-10 cm	Moderate	Moderate soft tissue damage
IIIA	>10 cm	High	Adequate soft tissue cover despite extensive damage
IIIB	>10 cm	High	Periosteal stripping, bone exposed, needs flap
IIIC	Any	High	Any open fracture + arterial injury needing repair

Principles of Management (4 marks) - ABCDE approach:

IV antibiotics within 1 hour - cefazolin ± gentamicin for IIIB/C. Continue for 24-72 hours post-debridement.
Tetanus prophylaxis - toxoid/immunoglobulin as appropriate
Photography and sterile dressing - wound photographed, dressed with saline-soaked gauze, NOT repeatedly disturbed
Debridement and washout - thorough wound excision within 6-24 hours (BOAST guidelines). Grade IIIB/C within 6 hours.
Skeletal stabilization - external fixator for heavily contaminated/Grade III; IM nail or plate for Grade I/II
Wound management - delayed primary closure at 48-72 hours; flap coverage (plastic surgery) for Grade IIIB; vascular repair for IIIC
Monitoring - regular neurovascular checks, watch for compartment syndrome

SAQ 6. Describe the Ottawa Rules and their clinical significance in fracture assessment. (4 marks)

Model Answer:

Ottawa Ankle Rules (2 marks): An ankle X-ray is only required if there is pain in the malleolar zone AND any of:

Bone tenderness at the posterior edge or tip of the lateral malleolus (distal 6 cm of fibula)
Bone tenderness at the posterior edge or tip of the medial malleolus (distal 6 cm of tibia)
Inability to bear weight both immediately and in the emergency department (4 steps)

Ottawa Foot Rules: A foot X-ray is only required if there is pain in the midfoot zone AND:

Bone tenderness at the base of 5th metatarsal, OR
Bone tenderness at the navicular
Inability to bear weight

Clinical significance (2 marks):

Sensitivity ~97-99% (rarely misses significant fractures)
Reduces X-ray use by ~30-40% in ankle injuries
Validated in adults; some caution in applying to children <18 years, pregnant women, and intoxicated patients
Reduces radiation exposure, cost, and ED wait times
Original Ottawa study: Stiell et al., 1992/1993

QUICK REFERENCE: KEY CLASSIFICATIONS

Classification	Uses For
Gustilo-Anderson	Open fracture severity
Garden (I-IV)	Femoral neck fractures
Neer (1-6 parts)	Proximal humerus fractures
AO/OTA	Universal long bone fractures
Vancouver	Periprosthetic femur fractures
Schatzker (I-VI)	Tibial plateau fractures
Anderson & D'Alonzo	Odontoid (C2) fractures
Denis (3-column)	Thoracolumbar spine fractures
Young-Burgess	Pelvic ring fractures

QUICK REFERENCE: HIGH-YIELD NERVE INJURIES WITH FRACTURES

Fracture	Nerve at Risk	Deficit
Surgical neck humerus	Axillary nerve	Deltoid paralysis, lateral shoulder numbness
Shaft of humerus (mid)	Radial nerve	Wrist drop
Medial epicondyle	Ulnar nerve	"Claw hand" (ring + little finger)
Supracondylar (child)	Anterior interosseous nerve	Loss of FPL/FDP index, pinch
Hip dislocation (posterior)	Sciatic nerve	Foot drop
Fibular neck	Common peroneal nerve	Foot drop (dorsiflexion/eversion)

Sources: Campbell's Operative Orthopaedics 15th Ed 2026 | Miller's Review of Orthopaedics 9th Ed | Rockwood and Green's Fractures in Adults 10th Ed 2025 | Bailey & Love's Short Practice of Surgery 28th Ed

---Here is a summary of everything covered in this question bank:

What's Included - 50 MCQs + 6 SAQs

Section A: Introduction & Historical Background (MCQ 1-12)

Covers: Nicholas Andry, Jean-Andre Venel, Hugh Owen Thomas, Robert Jones, John Charnley, AO group (1958), Kuntscher IM nail, plaster of Paris, Thomas splint, Hippocrates' contributions, AO principles of fracture fixation.

Section B: Diagnosis of Orthopedic Disorders (MCQ 13-24)

Covers: Clinical examination (Thomas test, Trendelenburg, McMurray's, Lachman's, bulge sign), Ottawa Rules, compartment syndrome diagnosis (6 Ps, pressure thresholds), nerve injury classification (Seddon), imaging (X-ray, CT, MRI, bone scan for occult fractures), Ottawa foot/ankle rules.

Section C: Treatment of Orthopedic Disorders (MCQ 25-32)

Covers: Goals of fracture management, DHS vs. hemiarthroplasty for femoral neck fractures, indications for external fixation, conservative vs. operative management, AO principles (early mobilization), complications of immobilization.

Section D: Fractures - Basics (MCQ 33-50 + 6 SAQs)

Covers: Fracture definitions and types (greenstick, torus, avulsion, impacted, pathological, stress), Gustilo-Anderson classification, fracture healing stages (inflammatory → soft callus → hard callus → remodeling), Wolff's law, primary vs. secondary healing, AVN, non-union/malunion/delayed union, compartment syndrome, nerve injuries with specific fractures, O'Donoghue's unhappy triad.

Each MCQ includes a detailed explanation of the correct answer and clinical reasoning - formatted for both exam revision and clinical understanding.

This is a shared conversation. Sign in to Orris to start your own chat.