2. Trauma MCQs

An intraoperative calcar fracture during uncemented femoral stem insertion (often classified as a Vancouver A fracture or specific type A fracture) requires careful management. If the stem is rotationally stable and well-seated distally, and the fracture is contained without significant displacement or propagation, applying cerclage wires (option C) to stabilize the calcar region and maintain reduction is often the appropriate management, allowing the stem to achieve stable fixation and the fracture to heal. Removing the stem to ream larger or convert to cemented without first attempting to stabilize the fracture is not ideal if the stem is stable. Non-weight bearing alone is not sufficient to stabilize the fracture. Osteotomy is an extreme measure not indicated for a simple calcar fracture. Therefore, stable fixation of the stem and internal fixation of the fracture (e.g., cerclage wires) is the correct approach to manage this complication while maintaining the primary uncemented reconstruction. If the stem were unstable, then revision to a larger stem or a cemented stem would be considered. However, the question states 'rotationally stable and well-seated distally'.

The superior gluteal artery (C) exits the pelvis through the greater sciatic notch, superior to the piriformis muscle, and supplies the gluteus medius and minimus. Its close proximity to the posterior-superior acetabulum makes it highly vulnerable to injury during acetabular reaming, screw placement, or retraction in a posterolateral approach, especially with vigorous superior retraction or violation of the true acetabular wall superiorly. Injury to this vessel can lead to rapid, significant retroperitoneal or gluteal hemorrhage. The inferior gluteal artery (D) exits inferior to piriformis and is less commonly injured during acetabular preparation itself. The femoral artery (A) and deep femoral artery (E) are anterior and medial, respectively, and are typically not at direct risk during a posterolateral approach to the acetabulum. The popliteal artery (B) is in the distal thigh/knee and irrelevant to hip surgery.

Lateral condyle fractures are intra-articular Salter-Harris IV equivalent fractures. They have a high propensity for nonunion if displaced >2 mm due to the pull of the common extensor origin and bathing of the fracture in synovial fluid. Nonunion typically results in progressive cubitus valgus deformity, which can stretch the ulnar nerve over time, causing a tardy ulnar nerve palsy.

For an 8-year-old child (school age), flexible intramedullary nails (TENs) are normally favored. However, TENs are relatively contraindicated for weight >50 kg or 'length-unstable' fractures (severe comminution/spiral). Submuscular bridge plating provides rigid length and rotational stability without violating the greater trochanteric or piriformis apophyses (which risks AVN of the femoral head in younger children).

The clinical presentation and the 'fallen leaf' sign are pathognomonic for a pathologic fracture through a unicameral bone cyst (UBC). Initial management of a pathologic fracture through a UBC is immobilization (e.g., a sling) to allow the fracture to heal. Surgery or injection is generally reserved for cysts that fail to resolve after fracture healing or for recurrent fractures.

A 'pulseless, pink' hand after closed reduction and percutaneous pinning of a supracondylar fracture indicates that the limb is adequately perfused via collateral circulation, despite the absence of a palpable radial pulse. The standard of care is close observation for 24-48 hours. Routine surgical exploration is not indicated as long as the hand remains well-perfused (warm, pink, normal capillary refill).

Damage control orthopedics prioritizes stabilization of the patient's physiology over definitive fracture fixation. In a hemodynamically unstable patient with polytrauma, external fixation of the pelvic ring injury (APC-III implies significant instability and potential for ongoing hemorrhage) and long bone fractures (femur, tibia) rapidly stabilizes these injuries, reducing pain, blood loss, and the systemic inflammatory response. This helps prevent the 'second hit' phenomenon. Definitive fixation (Options A, D) or complex soft tissue procedures (Option B) are deferred until the patient is physiologically stable. While fasciotomy (Option E) is critical for compartment syndrome, the general damage control strategy for multi-trauma initially focuses on broad stabilization to improve patient physiology.

Pathological fractures of long bones, particularly the femur, due to metastatic disease warrant surgical stabilization (Option D). This provides immediate pain relief, allows for early mobilization, and improves the patient's quality of life. An intramedullary nail is often the preferred method for femoral diaphyseal fractures due to its load-sharing capabilities and ability to prophylactically stabilize the entire bone, preventing further fractures in potentially weakened areas. Observation (Option A) is inappropriate for a displaced pathological fracture. Radiation therapy (Option B) is effective for pain control and local tumor burden but does not stabilize a fractured bone. Bisphosphonates (Option C) are useful for reducing skeletal related events but do not provide immediate stability to a fractured bone. Percutaneous cement augmentation (Option E) is typically for vertebral body fractures or impending fractures in weight-bearing areas, not for complete long bone fractures requiring structural stability.

This patient presents with a hemodynamically unstable, open book (APC-III) pelvic fracture with an open perineal wound. The priority is to control hemorrhage and stabilize the pelvic ring. Immediate application of a pelvic binder (Option D) is crucial to reduce the pelvic volume, appose fractured fragments, and tamponade venous bleeding. An open perineal wound in conjunction with a severe pelvic fracture (especially APC-III or vertical shear) has a very high association with urethral and bladder injuries, mandating urgent urologic consultation before any urinary catheter placement. While external fixation (Option B) is a more definitive stabilization, a binder is the most immediate step. Angiography (part of Option B) is for arterial bleeding which is less common than venous, but can follow binder/fixation. Emergent laparotomy (Option C) is typically performed for known intra-abdominal injury or persistent instability after pelvic stabilization. Traction (Option E) is not the primary intervention for pelvic ring instability.

This patient presents with classic symptoms and signs of acute compartment syndrome: pain disproportionate to the injury, a tense compartment, and pain on passive stretch of the muscles within the compartment (dorsiflexion of toes stretches the gastrocnemius/soleus/tibialis posterior, which can be affected by deep posterior compartment syndrome). While palpable pulses and intact sensation are often late findings, their presence does NOT rule out compartment syndrome. The most appropriate and definitive diagnostic step is to measure compartment pressures (Option C) in the suspected compartments. If pressures are elevated (typically within 30 mmHg of diastolic blood pressure, or absolute pressure >30-45 mmHg depending on institutional protocol), emergent fasciotomy is indicated. Delaying treatment (Option A), investigating vascular injury (Option B) without a clear indication (pulses are palpable), performing nerve conduction studies (Option D) which are not acutely useful, or elevating the leg (Option E) (which can paradoxically reduce perfusion pressure) are all inappropriate.

A Gustilo Type IIIC open fracture is defined by an associated major arterial injury requiring repair, regardless of the degree of soft tissue injury. The immediate priority after initial debridement and stabilization with external fixation is emergent vascular repair or bypass (Option 2) to restore blood flow to the limb. This is critical for limb salvage. Definitive intramedullary nailing (Option 0) is usually delayed. Serial debridements and delayed primary closure (Option 1) are part of the soft tissue management but occur after revascularization. Negative pressure wound therapy (Option 3) is a valuable adjunct but not the most critical intervention for vascular injury. Amputation (Option 4) is a last resort if limb salvage fails or is not feasible.

A Schatzker Type VI tibial plateau fracture involves bicondylar involvement with metadiaphyseal dissociation and is a high-energy injury. The presence of severe swelling and extensive blistering indicates significant soft tissue compromise, which is a contraindication to immediate definitive open reduction and internal fixation (ORIF) (Option A) due to the high risk of wound complications and infection. In such situations, the most appropriate initial management is temporary stabilization with an external fixator (Option D), either spanning the knee joint or a hybrid frame, to reduce the fracture, decompress the soft tissues, and allow the swelling and blisters to resolve. Definitive ORIF is then performed in a delayed fashion ('staged approach') once the soft tissue envelope has recovered. Emergent fasciotomy (Option C) would be indicated if compartment syndrome was diagnosed, but the current scenario points more towards severe soft tissue swelling rather than explicit compartment syndrome. Knee arthrodesis (Option B) is a salvage procedure, not an initial treatment. Skeletal traction (Option E) alone is insufficient for this complex fracture type.

A Young-Burgess Lateral Compression Type III (LC-III) injury involves severe posterior instability with a contralateral anterior open book component, often associated with an ipsilateral sacral fracture extending through the sacral foramen. This is an inherently unstable injury requiring both anterior and posterior surgical stabilization. Option 3 (Operative stabilization of both anterior and posterior pelvic rings) is the most comprehensive and correct answer. LC-III is a rotationally and vertically unstable injury. The anterior lesion requires stabilization (e.g., plate fixation for symphyseal diastasis or rami fractures), and the posterior sacral fracture, particularly if it involves the S1 foramen, requires robust fixation, typically with iliosacral screws or a posterior plate.

Knee dislocations are limb-threatening injuries, primarily due to the high risk of popliteal artery injury, which can occur even with seemingly normal initial pulses due to vasospasm or intimal tears. Option 3 (Repeat vascular assessment, including ABI or angiography) is the most critical immediate step. Even with palpable pulses, an intimal tear can lead to delayed thrombosis and limb ischemia. An ABI should be performed on all patients (ABI < 0.9 is concerning), and if abnormal or if there is any suspicion of injury, angiography (CT angiogram is common) is warranted to rule out popliteal artery injury.

The Vancouver classification for periprosthetic femoral fractures is crucial for guiding treatment:* Type A: Trochanteric region. A1 (stable implant), A2 (unstable implant).* Type B: Around or just below the stem. B1 (well-fixed stem), B2 (loose stem), B3 (loose stem with poor bone stock).* Type C: Well below the stem.This patient has a Vancouver Type B2 fracture. This means the stem is loose, but there is adequate distal bone stock.Option A (Plate fixation with cerclage wires alone) would be appropriate for a Vancouver Type B1 fracture (well-fixed stem), not a B2 fracture where the stem is loose. Attempting to fix a fracture around a loose stem will inevitably fail.Option B (Removal of the existing stem and revision with a long, uncemented, extensively coated stem) is the MOST appropriate treatment for a Vancouver Type B2 fracture. The loose stem must be revised. A long, often uncemented, extensively coated stem bypasses the fracture site, providing both stability for the fracture and definitive fixation for the new implant. Cerclage wires or cables are often used adjunctively to aid reduction and fracture healing.Option C (Cemented distal fixation of the existing stem) is not appropriate for a loose stem; it needs to be removed and replaced. Furthermore, cementing a distal segment around a loose stem is not a recognized technique.Option D (Non-operative management) is generally reserved for stable, non-displaced fractures (e.g., some Type A or C fractures in very infirm patients) and is inappropriate for an unstable B2 fracture.Option E (Dual plating with intramedullary nail) is not a standard technique for periprosthetic fractures. While plating can be used, the primary issue is the loose stem, which requires revision.

A pilon fracture, especially a comminuted intra-articular (AO type 43-C3) fracture, often involves significant soft tissue injury (swelling, blistering) due to the high-energy mechanism. The state of the soft tissues dictates the timing of definitive surgery. Option 1 (Application of an ankle-spanning external fixator and delayed ORIF) is the most appropriate initial management. An external fixator provides temporary stability, restores length, and protects the soft tissues, allowing the swelling to subside and the blisters to heal. Definitive ORIF is then performed in a delayed fashion, typically 7-14 days after the injury, when the soft tissue envelope is favorable.

For Gustilo-Anderson Type IIIB open fractures, antibiotic management is critical. The duration of antibiotics is a nuanced topic, but current recommendations have evolved. Option A (24 hours) and B (72 hours) are typically for Gustilo Type I and II fractures, respectively, where contamination is less severe and soft tissue coverage may be more straightforward. Option C (Until wound closure is achieved, then discontinue) is a reasonable practice, but modern guidelines often refine this. Option D (5-7 days post-final debridement and stable soft tissue coverage) is the most appropriate recommendation based on current evidence. For severe open fractures (Type IIIB and IIIC) requiring free flap coverage, antibiotics (typically a broad-spectrum regimen, often including a cephalosporin and an aminoglycoside or penicillin for gram-positive and gram-negative coverage, plus metronidazole or clindamycin for anaerobes in grossly contaminated wounds) should be continued for 5-7 days after the definitive debridement and stable soft tissue coverage have been achieved. Prolonged antibiotic use beyond this period (e.g., for weeks) without evidence of ongoing infection has not shown additional benefit and increases risks of resistance and side effects. The key is thorough surgical debridement and stable coverage, followed by a short, focused course of antibiotics. Option E (6 weeks of intravenous antibiotics) is generally reserved for confirmed osteomyelitis, not prophylactic management of open fractures without confirmed infection.

Pathological fractures through metastatic lesions in weight-bearing bones like the femur are typically managed surgically. The goal is to provide immediate stability, relieve pain, and facilitate mobility, followed by adjuvant therapy.Option A (Non-operative management with cast immobilization) is generally contraindicated for pathological femoral fractures. These fractures have a very low healing potential with conservative treatment due to the underlying tumor and often lead to prolonged bed rest, complications, and poor quality of life.Option B (External beam radiation therapy followed by observation) is a crucial adjuvant therapy, but it is not the primary treatment for analready fracturedweight-bearing bone. Radiation is effective for pain control and local tumor control, but it does not provide immediate mechanical stability.Option C (Prophylactic intramedullary nailing to prevent further spread) is forimpendingpathological fractures, not for analready fracturedfemur. While the nail does stabilize the fracture, 'prophylactic' indicates prevention, not treatment of an existing fracture.Option D (Internal fixation (e.g., intramedullary nail) with cement augmentation if needed, followed by adjuvant radiation) is the MOST appropriate management. Intramedullary nailing is often preferred for femoral shaft and subtrochanteric fractures as it provides excellent stability and allows for early weight-bearing. Cement augmentation (e.g., vertebroplasty cement) can be used to fill voids, enhance stability, and provide local tumor control. This is typically followed by adjuvant radiation therapy to improve local tumor control and pain relief. Chemotherapy or targeted therapy may also be indicated depending on the tumor type.Option E (Bisphosphonate therapy alone) can help reduce skeletal-related events and pain in metastatic bone disease, but it does not provide immediate stability or healing for an existing pathological fracture.

The choice of surgical approach for acetabular fractures depends on the fracture pattern and the columns involved. Acetabular fractures are typically classified into elementary (e.g., anterior column, posterior column, transverse) and associated patterns (e.g., anterior column + posterior hemitransverse, T-type, both column).Option A (Kocher-Langenbeck approach) provides excellent exposure to the posterior column, posterior wall, and posterior hemitransverse components of the acetabulum. It is the primary approach for fractures involving these posterior elements. For an anterior column and posterior hemitransverse fracture, the posterior hemitransverse component would be addressed via Kocher-Langenbeck, and the anterior column component would typically require a separate anterior approach (ilioinguinal or Stoppa).Option B (Ilioinguinal approach) provides excellent exposure to the anterior column, anterior wall, and quadrilateral plate. It is the primary approach for anterior column, anterior wall, or both column fractures. However, it does not provide adequate exposure for the posterior hemitransverse component of the fracture, which is explicitly mentioned.Option C (Judet approach) is a historical term encompassing various approaches (Kocher-Langenbeck, ilioinguinal) rather than a single distinct approach. So, it's too general.Option D (Stoppa approach (pararectus)) is a modified anterior approach that offers direct access to the quadrilateral surface and medial wall of the acetabulum, providing good access to the anterior column and pelvic brim. It's an alternative to the ilioinguinal but still primarily an anterior approach, lacking exposure to the posterior hemitransverse component.The fracture pattern described (anterior column and posterior hemitransverse) is an associated fracture. Traditionally, these would often require a combined anterior and posterior approach. However, for a fracture with an anterior column and posterior hemitransverse component, a single Kocher-Langenbeck approach can sometimes address the posterior hemitransverse and, with patient repositioning, access to the anterior column can sometimes be achieved through a different incision if the anterior column component is limited. However, for a comprehensive exposure ofbothelements, a combined approach or an extended approach might be necessary. Given the options, and the inclusion of 'posterior hemitransverse', the Kocher-Langenbeck is essential. If only one approach is to be chosen, the Kocher-Langenbeck is the direct one for the posterior hemitransverse part. Forbothcolumn injuries, or fractures involving both anterior and posterior elements, a single anterior approach (ilioinguinal or Stoppa) can sometimes address both parts, or a combined approach is often needed. However, the fracture specified is an anterior column andposterior hemitransverse. Posterior hemitransverse is best addressed posteriorly. Anterior column is best addressed anteriorly. If a single approach is implied, then the selection is tricky. Let's re-evaluate.Anterior column AND posterior hemitransverse fracture. The ilioinguinal approach allows excellent reduction of the anterior column, pelvic brim, and quadrilateral plate. The Kocher-Langenbeck approach allows reduction of the posterior column, posterior wall, and posterior hemitransverse. For this specific fracture pattern, a combined approach (posterior first for the posterior hemitransverse, then anterior for the anterior column) or an extended iliofemoral approach would provide comprehensive exposure. However, if onlyoneapproach can be chosen for the 'MOST appropriate', it's a difficult choice. Often, the anterior column is simpler to reduce than a complex posterior hemitransverse. However, if the question implies that the entire fracture needs to be addressed via one approach (which is often tested), then one must pick the approach that offers the best visualization for the most complex component or the overall best compromise. Given the options, neither a single Kocher-Langenbeck nor a single Ilioinguinal fully addresses both components perfectly. But for a 'posterior hemitransverse' component, the Kocher-Langenbeck is thedirectapproach. Let's reconsider. An Anterior Column and Posterior Hemitransverse fracture can sometimes be managed via a single anterior approach (Ilioinguinal or Stoppa) if the posterior hemitransverse component does not extend too far posteriorly, but it's generally challenging to get perfect reduction of the posterior hemitransverse from an anterior approach. Conversely, a Kocher-Langenbeck cannot address the anterior column effectively. This suggests either a combined approach (not an option) or an extended approach (not an option). Therefore, the question likely expects the identification of the approach for themost challengingormost specificcomponent. The posterior hemitransverse component is classically addressed via a posterior approach. The wording 'anterior column AND posterior hemitransverse' indicates both need fixation. If forced to choose a single approach, this question is problematic. Let me check common practices for this specific pattern.For an anterior column and posterior hemitransverse fracture, it's often described as one of the most challenging patterns. A combined approach or an extended iliofemoral approach might be used. However, among the given options, if we must pick one that addresses a significant part of the fracture, the Kocher-Langenbeck directly addresses the posterior hemitransverse component. The ilioinguinal addresses the anterior. The question asks for the 'MOST appropriate surgical approach'. If the anterior column fracture is relatively simple and the posterior hemitransverse is complex and displaced, the posterior approach might be prioritized. Let's assume the question expects the approach that iscriticalfor one of the named components. The posterior hemitransverse is best accessed posteriorly. This is a common pattern requiring dual approaches.However, in recent years, the Modified Stoppa (Pararectus) approach has shown increasing utility for many complex acetabular fractures, including combined patterns, because it provides good access to the quadrilateral surface and anterior column while also allowing some access to the posterior column. But for 'posterior hemitransverse', a true posterior approach (Kocher-Langenbeck) is paramount. Let's assume the question is designed to test the knowledge of primary access for each named fracture type. For the posterior hemitransverse, it is Kocher-Langenbeck. For the anterior column, it is ilioinguinal or Stoppa. Since the fracture involves both, a decision has to be made. Often, these are approached in two stages or with an extended approach. But if only one choice, the complexity of posterior hemitransverse usually dictates the Kocher-Langenbeck as a crucial part of the overall strategy.Let's assume the question wants the primary approach for the specified posterior component. Kocher-Langenbeck is the choice for posterior hemitransverse. If the answer was looking for anterior column only, it would be ilioinguinal. This pattern usually needs both. This is a poorly posed question if only one answer is allowed. However, the Kocher-Langenbeck provides access to the posterior column and its associated fractures (posterior wall, posterior column, posterior hemitransverse). Let's go with the direct approach to the named posterior component.

This patient has a vertically unstable pelvic fracture (Tile C, Young-Burgess Vertical Shear). Complete disruption of the posterior sacroiliac complex with significant superior displacement necessitates robust posterior fixation. While percutaneous iliosacral screws (Option E) are often used, a complete posterior ligamentous disruption with significant displacement may require open reduction to ensure anatomical alignment and direct visualization of the nerve roots, especially if associated with impaction or rotational deformity. A posterior approach (e.g., modified Gibson or posterior midline) allows for direct visualization and reduction of the SI joint and sacrum, followed by plate or screw fixation. Anterior symphyseal plating (often with a single or double plate) addresses the anterior injury and rotational stability. Simply plating the symphysis (Option A) without addressing the posterior instability is insufficient. Percutaneous fixation from an anterior approach (Option B) is not standard for vertical instability involving the SI joint. External fixation (Option D) is a temporizing measure for unstable patients or for temporary stabilization, not definitive for a hemodynamically stable patient with this degree of posterior instability.