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2. Trauma MCQs

Practice Set 601 of 640

This practice set contains high-yield board review questions covering key concepts in 2. Trauma. Each clinical scenario is designed to test your diagnostic and management skills relevant to this subspecialty.

Question 12001

Topic: 2. Trauma

A 40-year-old male sustains a high-energy fall directly onto his flexed knee, resulting in a tibial plateau fracture. CT scan reveals a Schatzker Type VI fracture with significant comminution, articular depression, and involvement of both medial and lateral condyles. There is concern for associated soft tissue injury and neurovascular compromise. What is the most appropriate management strategy?

. Closed reduction and long-leg cast immobilization
. External fixation as a temporizing measure, followed by staged ORIF
. Immediate open reduction and internal fixation with dual plating
. Arthrodesis of the knee joint
. Acute knee replacement

Correct Answer & Explanation

. External fixation as a temporizing measure, followed by staged ORIF

Explanation

A Schatzker Type VI tibial plateau fracture is a high-energy, bicondylar fracture with significant soft tissue compromise and high complication rates. Given the significant soft tissue swelling and potential for neurovascular injury, immediate definitive ORIF is often contraindicated due to the risk of wound complications and compartment syndrome. The most appropriate initial management is typically external fixation as a temporizing measure to restore length, alignment, and reduce soft tissue swelling (ligamentotaxis). Definitive open reduction and internal fixation (ORIF) with dual plating is then performed in a staged manner, once the soft tissue envelope has improved, usually 7-14 days later. Closed reduction alone is insufficient for such a complex, unstable fracture. Arthrodesis or acute knee replacement are salvage options.

Question 12002

Topic: 2. Trauma

A 28-year-old male polytrauma patient sustains a comminuted femoral shaft fracture, an ipsilateral open tibial shaft fracture, a pelvic ring injury, and a head injury. He is hemodynamically stable after initial resuscitation. What is the most appropriate management strategy for the femoral shaft fracture?

. Immediate reamed intramedullary nailing of the femur
. Immediate unreamed intramedullary nailing of the femur
. External fixation of the femur, followed by delayed intramedullary nailing
. Traction and cast immobilization
. Open reduction and plate fixation of the femur

Correct Answer & Explanation

. Immediate unreamed intramedullary nailing of the femur

Explanation

In a polytrauma patient, damage control orthopedics principles are paramount. For a femoral shaft fracture in a patient with an ipsilateral open tibial fracture and a head injury, intramedullary nailing is generally the preferred definitive treatment. However, reamed nailing carries a risk of systemic inflammatory response (fat emboli, lung injury) which can exacerbate a head injury. Therefore, unreamed intramedullary nailing is often preferred in polytrauma patients, especially with head injuries or pulmonary compromise, as it minimizes intramedullary pressure and systemic insult, while still providing stable fixation. Immediate reamed nailing can be performed in stable patients without significant pulmonary or head injuries. External fixation can be used for temporary stabilization but requires a second surgery. Traction and cast immobilization are generally not preferred for adult femoral shaft fractures due to malunion and prolonged immobilization issues. Plate fixation is typically reserved for cases where nailing is not feasible or contraindicated.

Question 12003

Topic: 2. Trauma

A 30-year-old female sustains a high-energy motor vehicle collision, resulting in a fracture of the L1 vertebra. She was wearing a lap belt only. Radiographs show a horizontal fracture through the vertebral body, pedicles, and spinous process, with distraction of the posterior elements. Neurological examination is intact. This fracture pattern is best described as what type of injury?

. Burst fracture
. Wedge compression fracture
. Chance fracture
. Fracture-dislocation
. Transverse process fracture

Correct Answer & Explanation

. Chance fracture

Explanation

The description of a horizontal fracture through the vertebral body, pedicles, and spinous process with distraction of the posterior elements, typically associated with a lap belt injury, is the classic description of a Chance fracture (also known as a flexion-distraction injury). These are highly unstable fractures involving all three columns of the spine. A burst fracture involves axial compression causing vertebral body comminution. A wedge compression fracture involves anterior compression. Fracture-dislocation implies more severe displacement and instability. Transverse process fractures are generally stable and not typically associated with lap belt injuries.

Question 12004

Topic: 2. Trauma

A 30-year-old male suffers a severe crush injury to his right calf. He complains of increasing pain disproportionate to the injury, especially with passive stretching of the toes. On examination, the calf is tense and swollen, and there is pain with passive dorsiflexion of the ankle. Pulses are palpable, and sensation is intact. What is the most appropriate next step in management?

. Elevation and ice application
. Analgesics and observation
. Measurement of compartment pressures
. Urgent MRI of the calf
. Placement of a bulky soft dressing

Correct Answer & Explanation

. Measurement of compartment pressures

Explanation

The clinical presentation (severe crush injury, pain disproportionate to injury, pain with passive stretching, tense compartment, intact pulses and sensation) is highly suspicious for acute compartment syndrome. Although sensation and pulses may initially be intact, these are late signs. The most appropriate next diagnostic step is to measure compartment pressures. If pressures are elevated above a critical threshold (e.g., within 30 mmHg of diastolic blood pressure, or absolute pressure >30 mmHg), an emergent fasciotomy is indicated. Delay in diagnosis and treatment can lead to irreversible muscle and nerve damage. Other options like elevation, ice, analgesics, or dressings are inappropriate and will delay definitive treatment. MRI is not an emergency diagnostic tool for acute compartment syndrome.

Question 12005

Topic: 2. Trauma

A 30-year-old male sustains a spiral fracture of the mid-shaft tibia and fibula in a skiing accident. There is minimal displacement, and the skin is intact. What is the most appropriate definitive management for this isolated tibia fracture?

. Closed reduction and long-leg cast immobilization
. Reamed intramedullary nailing of the tibia
. Unreamed intramedullary nailing of the tibia
. Open reduction and plate fixation of the tibia
. External fixation

Correct Answer & Explanation

. Reamed intramedullary nailing of the tibia

Explanation

For an isolated, closed, stable, spiral mid-shaft tibial fracture with minimal displacement, reamed intramedullary nailing is generally considered the gold standard of treatment in adults. It provides excellent stability, allows for early weight-bearing, and has predictable union rates. Closed reduction and cast immobilization can be used for very stable, non-displaced fractures, but nailing offers faster rehabilitation and superior biomechanical properties for a mid-shaft injury. Unreamed nailing is preferred for open fractures or patients with compartment syndrome/polytrauma. Plate fixation is typically reserved for non-union, malunion, or fractures unsuitable for nailing (e.g., proximal/distal metaphysis). External fixation is often a temporizing measure for open or highly comminuted fractures.

Question 12006

Topic: 2. Trauma

A 28-year-old male sustains an open comminuted fracture of the distal tibia and fibula (Pilon fracture). After initial irrigation and debridement, external fixation is applied. What is the most critical factor to assess before proceeding with definitive open reduction and internal fixation?

. Complete resolution of pain and swelling
. Normalization of inflammatory markers (ESR, CRP)
. Resolution of soft tissue swelling (wrinkle sign)
. Evidence of early fracture healing on radiographs
. Absence of any superficial pin site infections

Correct Answer & Explanation

. Resolution of soft tissue swelling (wrinkle sign)

Explanation

For Pilon fractures, especially open or high-energy injuries, the soft tissue envelope is crucial. Definitive ORIF is typically delayed until the soft tissue swelling has subsided, indicated by the presence of a 'wrinkle sign' in the skin. This minimizes the risk of devastating wound complications such as necrosis, dehiscence, and deep infection. Complete resolution of pain/swelling is desirable but the wrinkle sign is the most objective indicator. Normalization of inflammatory markers is important for infection but less critical for soft tissue readiness. Early fracture healing is not expected. Superficial pin site infections should be managed, but do not necessarily delay definitive fixation if the soft tissues are ready.

Question 12007

Topic: 2. Trauma

A 72-year-old female presents with severe pain and deformity of her right wrist following a fall. Radiographs show a volar displaced, comminuted fracture of the distal radius. This fracture pattern is best described as what?

. Colles' fracture
. Smith's fracture
. Barton's fracture
. Chauffeur's fracture
. Galeazzi fracture

Correct Answer & Explanation

. Smith's fracture

Explanation

A Smith's fracture is a fracture of the distal radius with volar (anterior) displacement of the distal fragment. It is often referred to as a 'reverse Colles' fracture. A Colles' fracture involves dorsal displacement. A Barton's fracture is an intra-articular fracture of the distal radius with dislocation of the radiocarpal joint (dorsal or volar). A Chauffeur's fracture (Hutchinson fracture) is an oblique fracture of the radial styloid. A Galeazzi fracture involves a fracture of the radial shaft with dislocation of the distal radioulnar joint (DRUJ).

Question 12008

Topic: 2. Trauma

When answering a question about fracture classification (e.g., Schatzker for tibial plateau), what is the most important aspect to convey to ensure full marks?

. Just stating the classification system's name.
. Drawing elaborate diagrams of each fracture type.
. Explaining the classification's clinical relevance, including implications for prognosis and guiding management decisions.
. Listing the classification types numerically without further detail.
. Debating the classification's historical origins.

Correct Answer & Explanation

. Explaining the classification's clinical relevance, including implications for prognosis and guiding management decisions.

Explanation

Simply naming or listing a classification system is insufficient. Examiners expect candidates to demonstrate understanding of its practical application. The most crucial aspect for scoring full marks is explaining the classification's clinical relevance: how it correlates with injury mechanism, informs prognosis, guides surgical vs. non-surgical management, and anticipates potential complications. This shows critical thinking beyond mere memorization.

Question 12009

Topic: 2. Trauma
In a written exam, you are asked to describe the management of an open tibia fracture (Gustilo-Anderson Type IIIA). To maximize your score, your answer must prioritize:
. Detailed description of casting techniques.
. Immediate discussion of definitive internal fixation options.
. Emphasis on urgent wound debridement, appropriate antibiotic prophylaxis, tetanus management, and temporary stabilization, followed by planned definitive management.
. Focusing on rehabilitation protocols only.
. Listing all potential complications without mentioning their management.

Correct Answer & Explanation

. Emphasis on urgent wound debridement, appropriate antibiotic prophylaxis, tetanus management, and temporary stabilization, followed by planned definitive management.

Explanation

Management of open fractures is an emergency, and examiners expect candidates to prioritize immediate life and limb-saving measures. For a Gustilo Type IIIA, urgent and thorough surgical debridement (often repeated), appropriate broad-spectrum antibiotic prophylaxis, tetanus status management, and provisional stabilization are paramount. Definitive fixation is usually delayed. This structured, time-sensitive approach demonstrates critical understanding of ATLS principles in trauma.

Question 12010

Topic: 2. Trauma

When interpreting plain radiographs of a fracture for an examiner, what detail is most commonly missed by candidates but is crucial for a complete assessment and high marks?

. Identifying the bone involved.
. Stating the patient's age and gender.
. Assessing joint above and below the fracture, and looking for associated soft tissue swelling or foreign bodies.
. Naming the specific X-ray views taken.
. Measuring the exact length of the fracture line.

Correct Answer & Explanation

. Assessing joint above and below the fracture, and looking for associated soft tissue swelling or foreign bodies.

Explanation

While identifying the fracture itself is fundamental, experienced examiners look for a comprehensive radiological assessment. This includes evaluating the joint above and below the fracture to rule out associated injuries (e.g., Monteggia/Galeazzi equivalents), looking for soft tissue signs (swelling, gas, foreign bodies), and assessing fracture patterns across multiple views. Missing these details suggests a narrow focus rather than a holistic understanding of imaging interpretation.

Question 12011

Topic: 2. Trauma

When discussing complex cases with multiple comorbidities (e.g., frail elderly patient with a hip fracture), which aspect is most vital to emphasize for optimal marking?

. Focusing solely on the orthopedic injury.
. Ignoring the patient's advanced age.
. A multidisciplinary team approach involving geriatricians, anesthetists, physiotherapists, and social workers, aimed at optimizing pre-operative status, managing medical comorbidities, and facilitating early rehabilitation.
. Prioritizing rapid surgery without extensive medical workup.
. Discussing only the cheapest implant options.

Correct Answer & Explanation

. A multidisciplinary team approach involving geriatricians, anesthetists, physiotherapists, and social workers, aimed at optimizing pre-operative status, managing medical comorbidities, and facilitating early rehabilitation.

Explanation

For patients with multiple comorbidities, particularly the elderly, a high-scoring answer will always emphasize a multidisciplinary team approach. This reflects an understanding that outcomes are not solely dependent on surgical skill, but on holistic patient care, medical optimization, and effective post-operative support. Examiners value this comprehensive, patient-centered perspective.

Question 12012

Topic: 2. Trauma

In a short-answer question asking for the principles of internal fixation, what key concept should be central to your answer for maximum marks?

. Listing various types of screws and plates.
. Focusing on the exact composition of stainless steel.
. Discussing the four AO principles (anatomical reduction, stable fixation, preservation of blood supply, early active mobilization) and their application.
. Stating that internal fixation is better than external fixation.
. Describing only intramedullary nailing.

Correct Answer & Explanation

. Discussing the four AO principles (anatomical reduction, stable fixation, preservation of blood supply, early active mobilization) and their application.

Explanation

The AO principles of fracture management (anatomical reduction, stable fixation, preservation of blood supply, and early active mobilization) are the cornerstone of internal fixation. Articulating these principles and briefly explaining their rationale and application demonstrates a fundamental and systematic understanding of fracture care that is essential for high marks in orthopedic exams.

Question 12013

Topic: 2. Trauma

In a scenario where you must choose between two valid surgical options (e.g., ORIF vs. arthroplasty for a distal radius fracture in an elderly patient), what is the best way to present your decision-making process for optimal marks?

. Simply state your preferred option without justification.
. Argue strongly for one option and dismiss the other.
. Compare and contrast both options, weighing their risks, benefits, and expected outcomes in the context of the specific patient's age, activity level, comorbidities, and fracture characteristics, ultimately justifying your chosen approach.
. Defer the decision to another surgeon.
. Select the option with the shortest operative time.

Correct Answer & Explanation

. Compare and contrast both options, weighing their risks, benefits, and expected outcomes in the context of the specific patient's age, activity level, comorbidities, and fracture characteristics, ultimately justifying your chosen approach.

Explanation

Examiners want to see critical thinking and the ability to apply knowledge to individual patient circumstances. A high-scoring answer will involve comparing and contrasting viable treatment options, explicitly discussing the pros and cons of each, and then justifying the chosen approach based on specific patient factors, fracture characteristics, and evidence-based medicine. This demonstrates a nuanced understanding of clinical decision-making.

Question 12014

Topic: 2. Trauma

You are asked to explain the concept of 'tension band wiring' in fracture fixation. To score maximally, your explanation should focus on:

. The exact diameter of the K-wires used.
. Describing it as a simple wiring technique.
. Explaining the biomechanical principle of converting tensile forces into compressive forces at the fracture site, illustrating its application with common examples (e.g., olecranon, patella).
. Discussing the history of wiring techniques.
. Stating it's rarely used anymore.

Correct Answer & Explanation

. Explaining the biomechanical principle of converting tensile forces into compressive forces at the fracture site, illustrating its application with common examples (e.g., olecranon, patella).

Explanation

To score maximally, the explanation of tension band wiring must go beyond a superficial description. It requires explaining the fundamental biomechanical principle: how the technique converts destructive tensile forces into beneficial compressive forces at the fracture site, thereby promoting healing. Illustrating with classic examples (e.g., olecranon, patella) further demonstrates practical application and enhances the score.

Question 12015

Topic: 2. Trauma

In an orthopedic emergency scenario (e.g., compartment syndrome), which communication strategy is most critical for impressing an examiner during a viva?

. Speaking very quickly to convey urgency.
. Avoiding calling for help to show self-reliance.
. Clearly and concisely stating the diagnosis, the immediate limb-saving intervention required (e.g., fasciotomy), and simultaneously articulating the need for a multi-disciplinary approach and senior involvement.
. Focusing on the detailed differential diagnosis first.
. Minimizing the severity of the situation.

Correct Answer & Explanation

. Clearly and concisely stating the diagnosis, the immediate limb-saving intervention required (e.g., fasciotomy), and simultaneously articulating the need for a multi-disciplinary approach and senior involvement.

Explanation

In an emergency, examiners assess not only knowledge but also clinical judgment, prioritization, and communication under pressure. Clearly stating the critical diagnosis, the immediate life/limb-saving intervention, and demonstrating awareness of the need for senior help and a multidisciplinary approach (e.g., 'I would perform an immediate fasciotomy and simultaneously call for senior assistance and prepare for theatre') shows decisiveness, safety, and leadership, which score highly.

Question 12016

Topic: 2. Trauma

To obtain maximum marks when discussing the assessment of a polytrauma patient (e.g., patient involved in a high-speed MVC), which framework must you explicitly follow and articulate?

. The specific orthopedic injury first.
. Detailed patient history from paramedics.
. The Advanced Trauma Life Support (ATLS) primary and secondary survey principles, prioritizing life-threatening injuries before limb-threatening ones.
. Only the Glasgow Coma Scale (GCS) score.
. Immediate ordering of a full body MRI.

Correct Answer & Explanation

. The Advanced Trauma Life Support (ATLS) primary and secondary survey principles, prioritizing life-threatening injuries before limb-threatening ones.

Explanation

For any polytrauma scenario, adherence to and explicit articulation of ATLS principles (Primary Survey: Airway, Breathing, Circulation, Disability, Exposure; Secondary Survey: Head-to-toe examination, history, investigations) is non-negotiable for optimal marks. This demonstrates a systematic, life-saving approach, prioritizing systemic stability over isolated orthopedic injuries, which is fundamental to trauma care.

Question 12017

Topic: 2. Trauma

When discussing peripheral nerve injuries (e.g., radial nerve palsy after humeral fracture), what is the most important aspect for an examiner to hear regarding initial management and prognosis?

. Immediate nerve exploration in all cases.
. Prescribing high-dose steroids.
. Thorough neurological assessment, splinting to prevent contractures, observation for spontaneous recovery (especially for neuropraxia), and clear indications for surgical exploration (e.g., open fracture, no recovery after 3-6 months, progressive deficit).
. Assuming permanent paralysis.
. Focusing only on the fracture fixation.

Correct Answer & Explanation

. Thorough neurological assessment, splinting to prevent contractures, observation for spontaneous recovery (especially for neuropraxia), and clear indications for surgical exploration (e.g., open fracture, no recovery after 3-6 months, progressive deficit).

Explanation

Management of peripheral nerve injuries linked to fractures requires a careful, systematic approach. A high-scoring answer will include: meticulous neurological assessment, protective splinting, observation for spontaneous recovery (especially for neuropraxia), and clearly defined indications for surgical exploration (e.g., open injuries, nerve transection, no recovery by 3-6 months, progressive deficit). This demonstrates an understanding of nerve physiology, recovery potential, and appropriate timing of intervention.

Question 12018

Topic: Pelvic & Acetabular Trauma

You are asked about the non-operative management of a stable pelvic ring injury (e.g., lateral compression type I). To achieve optimal marks, you should emphasize:

. Immediate weight-bearing as tolerated.
. Only bed rest for several weeks.
. Analgesia, early mobilization within pain limits (often with protected weight-bearing), and close clinical and radiological follow-up to monitor stability and healing, along with VTE prophylaxis.
. Aggressive physical therapy immediately.
. Ignoring pain management.

Correct Answer & Explanation

. Analgesia, early mobilization within pain limits (often with protected weight-bearing), and close clinical and radiological follow-up to monitor stability and healing, along with VTE prophylaxis.

Explanation

For stable pelvic ring injuries managed non-operatively, the key elements for a high-scoring answer are: adequate pain control to facilitate mobilization, early protected weight-bearing (not full weight-bearing initially) to prevent stiffness and reduce complications, VTE prophylaxis, and regular clinical and radiological follow-up to ensure stability and monitor healing. Prolonged bed rest or aggressive, unprotected mobilization would be inappropriate.

Question 12019

Topic: 2. Trauma

In an exam question about managing pediatric supracondylar humerus fractures, what is the key principle to emphasize that dictates immediate action and influences prognosis?

. The precise fracture pattern.
. The need for an open reduction in all cases.
. Assessment and management of neurovascular status (especially the brachial artery and median nerve) before and after reduction/fixation, given the risk of compartment syndrome and Volkmann's ischemia.
. Parental preference for treatment.
. Focusing solely on pain control.

Correct Answer & Explanation

. Assessment and management of neurovascular status (especially the brachial artery and median nerve) before and after reduction/fixation, given the risk of compartment syndrome and Volkmann's ischemia.

Explanation

For pediatric supracondylar humerus fractures, the most critical element is the diligent assessment and management of neurovascular compromise. These fractures are notorious for their association with brachial artery injury and median nerve palsies, and the risk of compartment syndrome and Volkmann's ischemia. Continuous neurovascular monitoring pre-, intra-, and post-reduction/fixation, with a low threshold for intervention, is paramount and demonstrates patient safety acumen.

Question 12020

Topic: 2. Trauma

You are asked about the management of a non-union of a long bone fracture. What is the most important concept to convey to an examiner that shows a comprehensive approach?

. Only recommending repeat plating.
. Ignoring patient factors.
. Identifying and addressing the underlying causes (e.g., inadequate stability, biological factors like infection, poor vascularity, systemic comorbidities) before formulating a tailored treatment plan, which may include revision fixation, bone grafting, or biological augmentation.
. Assuming all non-unions are hypertrophic.
. Focusing solely on electrical stimulation.

Correct Answer & Explanation

. Identifying and addressing the underlying causes (e.g., inadequate stability, biological factors like infection, poor vascularity, systemic comorbidities) before formulating a tailored treatment plan, which may include revision fixation, bone grafting, or biological augmentation.

Explanation

Management of non-union requires a comprehensive, systematic approach. A high-scoring answer will focus on first identifying and addressing the underlying causes of non-union (e.g., mechanical instability, infection, poor vascularity, patient factors like smoking, nutrition, comorbidities). Only then can a tailored treatment plan be developed, which might involve revision fixation, various bone grafting techniques, or biological adjuncts. This diagnostic rigor is paramount.

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