A 50-year-old manual laborer sustained a comminuted distal radius fracture treated with ORIF 3 months ago. Despite supervised hand therapy, he has persistent stiffness with 30-degree wrist extension (normal 70), weak grip strength at 40% of contralateral side, and visible muscle atrophy. He reports burning pain with light touch and keeps his hand wrapped in a sock. Skin appears mottled with decreased hair growth. He is applying for disability and has a pending lawsuit. Evaluate the clinical picture and appropriate next step.
Q2
A 16-year-old basketball player presents with chronic anterior knee pain worse with jumping and kneeling. Examination shows tenderness at the inferior pole of the patella and pain with resisted knee extension. X-ray shows elongation and fragmentation of the inferior patellar pole. He has failed 6 months of physical therapy, activity modification, and NSAIDs. His AAU season starts in 6 weeks and a college scout will be attending. His parents want definitive treatment. Evaluate the management approach balancing medical and contextual factors.
Q3
A 68-year-old woman falls and sustains a displaced femoral neck fracture. She was ambulatory with a walker pre-injury, has moderate dementia, osteoporosis, and multiple comorbidities including CHF and CKD stage 3. Her family wants her to return to her assisted living facility. The orthopedic team debates between hemiarthroplasty and total hip arthroplasty. Evaluate the optimal surgical approach considering her overall status.
Q4
A 42-year-old woman presents with progressive hip pain over 18 months. She has a history of chronic steroid use for SLE. X-ray shows femoral head flattening with subchondral lucency but preserved joint space. MRI shows serpentine low-signal band on T1 in femoral head with surrounding edema. She has significant functional limitation and failed conservative management. Analyze the pathophysiology and most appropriate intervention.
Q5
A 35-year-old motorcyclist presents after a high-speed collision with a closed femoral shaft fracture, ipsilateral tibial fracture, and pulmonary contusions. He is hemodynamically stable after resuscitation. Oxygen saturation is 92% on 4L nasal cannula. Chest X-ray shows bilateral infiltrates. Analyze the optimal timing and method of fracture fixation.
Q6
A 55-year-old diabetic man presents 5 days after open reduction internal fixation of an ankle fracture with increased pain, erythema extending beyond surgical margins, and purulent drainage from the incision. Temperature is 38.5°C. X-ray shows hardware in good position with no loosening. WBC is 16,000/μL. Wound culture grows MRSA. Analyze the appropriate management strategy.
Q7
A 28-year-old football player sustains a knee injury during a tackle. He reports hearing a 'pop' and immediate swelling. On examination 1 hour post-injury, there is a large effusion, positive anterior drawer test, and positive Lachman test with no firm endpoint. Posterior drawer and varus/valgus stress tests are negative. Apply the next step in management.
Q8
A 70-year-old woman with osteoporosis falls on an outstretched hand and presents with wrist pain. X-ray shows a distal radius fracture with 20 degrees dorsal angulation, 3mm radial shortening, and intra-articular involvement. She is right-hand dominant and this is her right wrist. Apply appropriate management.
Q9
A 45-year-old woman presents with progressive right knee pain over 3 months. She describes mechanical symptoms with intermittent locking. On examination, McMurray test is positive with a palpable click. ROM is limited by pain at full flexion. There is no effusion or ligamentous laxity. Apply the most appropriate initial diagnostic approach.
Q10
A 25-year-old construction worker falls from a scaffold and presents to the ED with severe right thigh pain and deformity. X-ray shows a midshaft femoral fracture with significant displacement. Neurovascular exam is normal. His blood pressure is 90/60 mmHg and heart rate is 120 bpm. He receives 2L crystalloid with minimal response. Apply appropriate initial management.
Orthopedic Surgery Basics US Medical PG Practice Questions and MCQs
Question 1: A 50-year-old manual laborer sustained a comminuted distal radius fracture treated with ORIF 3 months ago. Despite supervised hand therapy, he has persistent stiffness with 30-degree wrist extension (normal 70), weak grip strength at 40% of contralateral side, and visible muscle atrophy. He reports burning pain with light touch and keeps his hand wrapped in a sock. Skin appears mottled with decreased hair growth. He is applying for disability and has a pending lawsuit. Evaluate the clinical picture and appropriate next step.
A. EMG/NCS to evaluate for nerve injury
B. Psychiatric evaluation for malingering assessment
C. Repeat surgery for hardware removal and capsular release
D. Independent functional capacity evaluation
E. Triple-phase bone scan and referral to pain management (Correct Answer)
Explanation: ***Triple-phase bone scan and referral to pain management***
- The presence of **allodynia** (pain with light touch), **autonomic dysfunction** (mottled skin, hair changes), and **atrophy** following trauma is classic for **Complex Regional Pain Syndrome (CRPS)**.
- A **triple-phase bone scan** typically shows increased periarticular uptake in the delayed phase, and multidisciplinary **pain management** is the gold standard for treatment.
*EMG/NCS to evaluate for nerve injury*
- While nerve injury can cause pain, it does not explain the **vasomotor changes** and skin/hair trophic changes seen in this patient.
- This patient likely has **CRPS Type I** (reflex sympathetic dystrophy), which occurs in the absence of a defined nerve injury.
*Psychiatric evaluation for malingering assessment*
- Despite the **secondary gain** considerations (lawsuit/disability), the physical findings of **mottled skin** and decreased hair growth are objective clinical signs that cannot be faked.
- Labeling the patient as malingering before ruling out organic conditions like **CRPS** is inappropriate and delays necessary care.
*Repeat surgery for hardware removal and capsular release*
- Additional surgery is often **contraindicated** in the acute/active phase of CRPS as it can significantly worsen the pain and inflammatory response.
- Stiffness in CRPS is due to **neurogenic inflammation** and sympathetic overactivity rather than simple mechanical obstruction by hardware.
*Independent functional capacity evaluation*
- While useful for measuring work readiness, this is a **diagnostic tool** for disability status rather than a clinical management step for an active pathology.
- The priority is to confirm the diagnosis of **CRPS** and initiate treatment to prevent permanent **joint contracture** and functional loss.
Question 2: A 16-year-old basketball player presents with chronic anterior knee pain worse with jumping and kneeling. Examination shows tenderness at the inferior pole of the patella and pain with resisted knee extension. X-ray shows elongation and fragmentation of the inferior patellar pole. He has failed 6 months of physical therapy, activity modification, and NSAIDs. His AAU season starts in 6 weeks and a college scout will be attending. His parents want definitive treatment. Evaluate the management approach balancing medical and contextual factors.
A. Recommend season withdrawal, continued conservative management for 6 more months (Correct Answer)
B. Corticosteroid injection to allow play through season with surgery after
C. Arthroscopic excision of inferior pole fragments allowing return to play in 4 weeks
D. Open excision of ossicle with patellar tendon repair, 4-6 month recovery
E. PRP injection series with continued play and close monitoring
Explanation: ***Recommend season withdrawal, continued conservative management for 6 more months***
- This patient presents with **Sinding-Larsen-Johansson syndrome**, a traction **apophysitis** of the inferior patellar pole that typically resolves with skeletal maturity and conservative care.
- Despite external pressures like college scouting, standard medical management mandates at least **12 months of conservative treatment** before considering surgery, as outcomes for surgical intervention in adolescents are often poor.
*Corticosteroid injection to allow play through season with surgery after*
- **Intratendinous corticosteroid injections** are strictly contraindicated as they significantly increase the risk of **patellar tendon rupture**.
- While they may provide short-term pain relief, they do not address the underlying **apophysitis** and compromise the structural integrity of the extensor mechanism.
*Arthroscopic excision of inferior pole fragments allowing return to play in 4 weeks*
- Surgical excision is rarely indicated in **skeletally immature** patients and is never the first-line treatment even after 6 months of failed therapy.
- A 4-week return-to-play timeline is clinically unrealistic following any surgical intervention on the **patellar tendon** or bone interface.
*Open excision of ossicle with patellar tendon repair, 4-6 month recovery*
- **Open excision** is considered only in refractory cases after the growth plates have closed and at least one year of non-operative management has failed.
- Performing an invasive repair in a 16-year-old unnecessarily risks damaging the **physes** and may lead to long-term functional deficits.
*PRP injection series with continued play and close monitoring*
- There is currently **insufficient evidence** to support the use of Platelet-Rich Plasma (PRP) as a definitive treatment for pediatric traction apophysitis.
- Continuing high-impact jumping and kneeling while relying on injections does not allow the **traction-induced inflammation** and fragmentation to heal.
Question 3: A 68-year-old woman falls and sustains a displaced femoral neck fracture. She was ambulatory with a walker pre-injury, has moderate dementia, osteoporosis, and multiple comorbidities including CHF and CKD stage 3. Her family wants her to return to her assisted living facility. The orthopedic team debates between hemiarthroplasty and total hip arthroplasty. Evaluate the optimal surgical approach considering her overall status.
A. ORIF with cannulated screws to preserve native anatomy
B. Delay surgery until medical optimization for 2-3 weeks
C. Total hip arthroplasty for better long-term function
D. Non-operative management with palliative care focus
E. Hemiarthroplasty given age and comorbidities (Correct Answer)
Explanation: ***Hemiarthroplasty given age and comorbidities***
- **Hemiarthroplasty** is the treatment of choice for displaced femoral neck fractures in elderly patients with **limited functional demands**, moderate dementia, and multiple comorbidities.
- It offers **shorter operative time**, less blood loss, and a **lower risk of dislocation** compared to total hip arthroplasty, facilitating a quicker return to baseline for this high-risk patient.
*ORIF with cannulated screws to preserve native anatomy*
- **ORIF** is associated with high rates of **nonunion** and **avascular necrosis** in displaced femoral neck fractures, especially in elderly patients with **osteoporotic bone**.
- It is typically reserved for **younger patients** or undisplaced fractures where the biological preservation of the femoral head is a priority.
*Delay surgery until medical optimization for 2-3 weeks*
- Delaying surgery beyond **24-48 hours** significantly increases the risk of mortality, **pressure ulcers**, and venous thromboembolism in elderly hip fracture patients.
- Medical optimization should be focused and **expedited** to allow for urgent surgical intervention rather than prolonged delays.
*Total hip arthroplasty for better long-term function*
- While **Total hip arthroplasty (THA)** provides better functional outcomes in active, independent elderly patients, this patient uses a **walker** and has **dementia**, making her a poor candidate.
- THA involves a higher risk of **dislocation** and more extensive surgical stress, which may not be tolerated given her **CHF** and **CKD** status.
*Non-operative management with palliative care focus*
- **Non-operative management** is generally reserved for patients who are **non-ambulatory** pre-injury or those with a very short life expectancy where surgery poses an extreme risk.
- This patient was previously **ambulatory with a walker**, and surgery is necessary to provide **pain relief** and prevent the complications of prolonged bed rest.
Question 4: A 42-year-old woman presents with progressive hip pain over 18 months. She has a history of chronic steroid use for SLE. X-ray shows femoral head flattening with subchondral lucency but preserved joint space. MRI shows serpentine low-signal band on T1 in femoral head with surrounding edema. She has significant functional limitation and failed conservative management. Analyze the pathophysiology and most appropriate intervention.
A. Hip arthroscopy for debridement
B. Hip resurfacing arthroplasty
C. Total hip arthroplasty given advanced changes
D. Continue conservative management with protected weight bearing
E. Core decompression with possible bone grafting (Correct Answer)
Explanation: ***Core decompression with possible bone grafting***
- This patient has **Avascular Necrosis (AVN)** of the femoral head, likely secondary to **chronic steroid use** for SLE, presenting with the characteristic **crescent sign** (subchondral lucency).
- **Core decompression** is the surgical treatment of choice for early-stage AVN (Ficat Stage I-II/III) before joint space narrowing occurs, as it reduces **intraosseous pressure** and promotes revascularization.
*Hip arthroscopy for debridement*
- This procedure is typically used for **labral tears** or **femoroacetabular impingement**, not for treating the subchondral bone death seen in AVN.
- It does not address the underlying **vascular compromise** or structural failure of the femoral head.
*Hip resurfacing arthroplasty*
- While an alternative to total hip replacement in young patients, it is generally **avoided in SLE patients** or those on steroids due to poor bone quality and high failure rates.
- This procedure is for **end-stage arthritis**, whereas this patient still has a **preserved joint space**.
*Total hip arthroplasty given advanced changes*
- Total hip arthroplasty (THA) is the definitive treatment for **Ficat Stage IV** AVN, characterized by **secondary osteoarthritis** and joint space loss.
- Because the **joint space is preserved** in this patient, joint-preserving operations like core decompression are preferred to delay the need for THA in a relatively young patient.
*Continue conservative management with protected weight bearing*
- Non-operative management has a **high failure rate** (over 80%) in symptomatic AVN and typically leads to rapid progression to femoral head collapse.
- The patient has already **failed conservative management** and has significant functional limitations, necessitating surgical intervention.
Question 5: A 35-year-old motorcyclist presents after a high-speed collision with a closed femoral shaft fracture, ipsilateral tibial fracture, and pulmonary contusions. He is hemodynamically stable after resuscitation. Oxygen saturation is 92% on 4L nasal cannula. Chest X-ray shows bilateral infiltrates. Analyze the optimal timing and method of fracture fixation.
A. Skeletal traction for 2 weeks followed by definitive fixation
B. Delay all surgical intervention until pulmonary status improves
C. Immediate intramedullary nailing of both femur and tibia within 24 hours
D. Immediate femoral IM nailing and tibial external fixation
E. External fixation of both fractures with delayed conversion to IM nailing (Correct Answer)
Explanation: ***External fixation of both fractures with delayed conversion to IM nailing***
- This patient is categorized as a **borderline polytrauma** patient due to pulmonary contusions and bilateral infiltrates; temporary **external fixation** minimizes the initial surgical stress.
- Adopting a **Damage Control Orthopedics (DCO)** approach prevents the "second-hit phenomenon," where systemic inflammation from major surgery like **intramedullary (IM) nailing** worsens the existing lung injury.
*Skeletal traction for 2 weeks followed by definitive fixation*
- Long-term **skeletal traction** increases the risk of complications such as **pneumonia**, **decubitus ulcers**, and **thromboembolism** due to prolonged immobilization.
- While it avoids surgical trauma, it does not provide the stability needed for early mobilization in a patient with **pulmonary contusions**.
*Delay all surgical intervention until pulmonary status improves*
- Completely delaying surgery prevents early **mechanical stabilization**, which is necessary to reduce pain and facilitate nursing care and chest physiotherapy.
- Failing to stabilize a **floating knee** (ipsilateral femur and tibia fractures) leads to significant soft tissue damage and blood loss.
*Immediate intramedullary nailing of both femur and tibia within 24 hours*
- Prolonged **intramedullary reaming** in a patient with thoracic trauma can cause **fat embolization**, further deteriorating the patient's **oxygen saturation**.
- This "early total care" approach is contraindicated in hemodynamically unstable or **borderline** patients with significant **lung contusions**.
*Immediate femoral IM nailing and tibial external fixation*
- Performing a definitive **femoral IM nail** still carries a high risk of systemic inflammatory insult during the vulnerable early phase of **pulmonary injury**.
- A hybrid approach is suboptimal here because the femur fracture is a more significant source of potential **embolization** and surgical stress than the tibia.
Question 6: A 55-year-old diabetic man presents 5 days after open reduction internal fixation of an ankle fracture with increased pain, erythema extending beyond surgical margins, and purulent drainage from the incision. Temperature is 38.5°C. X-ray shows hardware in good position with no loosening. WBC is 16,000/μL. Wound culture grows MRSA. Analyze the appropriate management strategy.
A. Oral linezolid and outpatient wound care
B. Below-knee amputation to prevent sepsis
C. IV vancomycin and local wound care with hardware retention
D. Debridement, irrigation, hardware retention, and culture-directed antibiotics (Correct Answer)
E. Immediate hardware removal, debridement, and external fixation
Explanation: ***Debridement, irrigation, hardware retention, and culture-directed antibiotics***
- This case describes an **acute postoperative infection** (within 4 weeks of surgery); the primary goal is to control infection while maintaining **fracture stability**.
- Since the hardware is **stable (not loosened)** and the fracture has not healed, retaining the hardware while performing thorough **surgical debridement** and targeted antibiotics is the standard of care.
*Oral linezolid and outpatient wound care*
- **Purulent drainage** and systemic signs like **fever and leukocytosis** require aggressive inpatient surgical intervention, not just outpatient medical management.
- Relying on oral antibiotics alone for a **deep surgical site infection** involving hardware significantly increases the risk of treatment failure and **osteomyelitis**.
*Below-knee amputation to prevent sepsis*
- Amputation is a measure of last resort for **recalcitrant infections** or extensive **tissue necrosis** that cannot be managed by limb-salvage techniques.
- Current management should focus on **limb-preserving strategies** given the localized nature of the infection and stable hardware.
*IV vancomycin and local wound care with hardware retention*
- While **IV vancomycin** is appropriate for **MRSA**, it cannot penetrate the **biofilm** on hardware effectively without formal **surgical irrigation and debridement**.
- Local wound care is insufficient to address a deep infection that has reached the surgical implant site.
*Immediate hardware removal, debridement, and external fixation*
- Immediate removal is generally avoided if the hardware is stable because **fracture instability** can further promote infection and complicate bone healing.
- **External fixation** is usually reserved for instances where the hardware is loose or the infection cannot be controlled without removing the primary internal implants.
Question 7: A 28-year-old football player sustains a knee injury during a tackle. He reports hearing a 'pop' and immediate swelling. On examination 1 hour post-injury, there is a large effusion, positive anterior drawer test, and positive Lachman test with no firm endpoint. Posterior drawer and varus/valgus stress tests are negative. Apply the next step in management.
A. Aspiration of hemarthrosis, immobilization, and delayed MRI in 2-3 weeks (Correct Answer)
B. Physical therapy for quadriceps strengthening before further workup
C. Immediate MRI followed by surgical planning
D. CT scan to rule out occult fracture
E. Arthroscopic ACL reconstruction within 24 hours
Explanation: ***Aspiration of hemarthrosis, immobilization, and delayed MRI in 2-3 weeks***
- Immediate management of an acute **ACL tear** involves addressing the **hemarthrosis** for pain relief and protecting the joint through **immobilization**.
- A **delayed MRI** is preferred because acute **edema** and hemorrhage within the first few days can obscure details, and allowing inflammation to subside improves diagnostic accuracy.
*Physical therapy for quadriceps strengthening before further workup*
- While **prehabilitation** is vital for long-term recovery, it cannot be initiated during the acute phase until the **effusion** is managed and a definitive diagnosis is confirmed.
- **Quadriceps strengthening** is a rehabilitation step, not the immediate "next step" for an athlete with a large, painful effusion.
*Immediate MRI followed by surgical planning*
- **Immediate MRI** is often technically difficult to interpret due to significant **intra-articular bleeding** and soft tissue swelling shortly after the injury.
- **Surgical planning** should only occur after clinical stabilization, as performing surgery during the acute inflammatory phase significantly increases the risk of **arthrofibrosis**.
*CT scan to rule out occult fracture*
- A **CT scan** is primarily used to evaluate **bony anatomy**; however, it is less sensitive than MRI for evaluating soft tissue structures like the **ACL** or **meniscus**.
- While it can rule out a **Segond fracture**, the clinical findings of a positive **Lachman test** and **anterior drawer** test specifically point toward a ligamentous injury rather than a fracture.
*Arthroscopic ACL reconstruction within 24 hours*
- **Early reconstruction** (within the first week) is generally contraindicated because it carries a high risk of **permanent knee stiffness** and joint scarring.
- Standard practice mandates waiting for the **range of motion** to return and for the acute swelling to resolve before attempting surgical repair.
Question 8: A 70-year-old woman with osteoporosis falls on an outstretched hand and presents with wrist pain. X-ray shows a distal radius fracture with 20 degrees dorsal angulation, 3mm radial shortening, and intra-articular involvement. She is right-hand dominant and this is her right wrist. Apply appropriate management.
A. Closed reduction and short arm cast for 6 weeks
B. External fixation with supplemental K-wire fixation
C. Closed reduction and long arm splint followed by short arm cast
D. Open reduction and internal fixation with volar plate (Correct Answer)
E. Conservative management with sling immobilization
Explanation: ***Open reduction and internal fixation with volar plate***
- This fracture meets surgical criteria due to **dorsal angulation >10 degrees**, **radial shortening >3mm**, and **intra-articular involvement**, which require anatomical restoration.
- **Volar plating** is the treatment of choice as it allows for **early mobilization** and provides stable internal fixation, reducing the risk of post-traumatic arthritis and stiffness in the dominant hand.
*Closed reduction and short arm cast for 6 weeks*
- Conservative casting is generally reserved for stable, **nondisplaced fractures** or those with minimal deformity that can be maintained within acceptable limits.
- This fracture is considered **unstable** due to the degree of tilt and shortening, making secondary displacement highly likely if not surgically fixed.
*External fixation with supplemental K-wire fixation*
- While this can be used for highly comminuted fractures, it often leads to **pin site infections** and prolonged immobilization of the wrist joint.
- **Volar locking plates** have largely replaced external fixation because they offer superior **biomechanical stability** and better functional outcomes in osteoporotic bone.
*Closed reduction and long arm splint followed by short arm cast*
- A long arm splint/cast is typically used to prevent forearm rotation but is unnecessary for most **distal radius fractures** and increases the risk of elbow stiffness.
- Immobilization alone cannot reliably maintain the reduction of a fracture with significant **radial shortening** and **articular step-off**.
*Conservative management with sling immobilization*
- A sling provides no **structural stability** or reduction for a displaced fracture and would result in significant malunion and loss of hand function.
- This approach is only considered for patients with extreme **comorbidities** who are unfit for any form of surgical or manipulative intervention.
Question 9: A 45-year-old woman presents with progressive right knee pain over 3 months. She describes mechanical symptoms with intermittent locking. On examination, McMurray test is positive with a palpable click. ROM is limited by pain at full flexion. There is no effusion or ligamentous laxity. Apply the most appropriate initial diagnostic approach.
A. Arthroscopy with potential therapeutic intervention
B. MRI of the knee without contrast (Correct Answer)
C. Diagnostic arthrocentesis with synovial fluid analysis
D. CT scan of the knee with 3D reconstruction
E. Plain radiographs in standing AP, lateral, and sunrise views
Explanation: ***MRI of the knee without contrast***
- The clinical presentation of **mechanical locking** and a **positive McMurray test** strongly suggests a **meniscal tear**, for which MRI is the gold standard for non-invasive diagnosis.
- **MRI** provides high sensitivity and specificity for identifying **soft tissue injuries**, including meniscal and ligamentous pathology, prior to considering surgery.
*Arthroscopy with potential therapeutic intervention*
- While definitive, **arthroscopy** is an **invasive** procedure that is generally reserved for patients with clear indications for surgical repair or debridement.
- It is not the "initial" diagnostic step and should ideally be preceded by **non-invasive imaging** to map the pathology.
*Diagnostic arthrocentesis with synovial fluid analysis*
- This procedure is indicated for suspected **septic arthritis**, gout, or inflammatory arthropathy, rather than mechanical structural injuries.
- The absence of **effusion** in this patient makes arthrocentesis unnecessary and unlikely to yield diagnostic information for a **meniscal tear**.
*CT scan of the knee with 3D reconstruction*
- **CT scanning** is superior for evaluating **cortical bone anatomy** and complex fractures but has poor resolution for intra-articular soft tissues like menisci.
- It is not the preferred modality when a **meniscal injury** is the primary clinical suspicion.
*Plain radiographs in standing AP, lateral, and sunrise views*
- **X-rays** are often the first step to rule out **osteoarthritis** or fractures, but they cannot visualize the **meniscus** directly.
- Given the high clinical suspicion for a soft tissue injury based on **mechanical symptoms**, MRI is the most appropriate next step to confirm the diagnosis.
Question 10: A 25-year-old construction worker falls from a scaffold and presents to the ED with severe right thigh pain and deformity. X-ray shows a midshaft femoral fracture with significant displacement. Neurovascular exam is normal. His blood pressure is 90/60 mmHg and heart rate is 120 bpm. He receives 2L crystalloid with minimal response. Apply appropriate initial management.
A. Immediate intramedullary nailing in the operating room
B. Traction splint application and type and cross for transfusion (Correct Answer)
C. External fixation and continued resuscitation
D. MRI to assess soft tissue damage
E. CT angiography to rule out vascular injury
Explanation: ***Traction splint application and type and cross for transfusion***
- Midshaft **femoral fractures** can result in significant internal blood loss (up to 1500 mL), leading to **hemorrhagic shock**, as evidenced by this patient's hypotension and tachycardia.
- A **traction splint** helps stabilize the fracture, reduces the thigh volume to limit further bleeding, and provides pain relief, while **blood transfusion** is necessary for patients non-responsive to crystalloids.
*Immediate intramedullary nailing in the operating room*
- Definitive surgical fixation like **intramedullary nailing** is contraindicated in a hemodynamically unstable patient (the "in extremis" or "unstable" category).
- Immediate major surgery in the setting of **uncompensated shock** can trigger a lethal triad of acidosis, coagulopathy, and hypothermia.
*External fixation and continued resuscitation*
- **External fixation** is part of **damage control orthopedics**, but the immediate priority in the ED is stabilizing the femur and addressing volume loss.
- Resuscitation with blood products is the primary goal; mechanical traction is the standard **initial bedside management** before moving to the OR for fixation.
*MRI to assess soft tissue damage*
- **MRI** is not indicated in the acute management of a femoral shaft fracture and has no role in the emergency workup of **trauma-related shock**.
- Obtaining an MRI would dangerously delay life-saving resuscitation and **hemostatic control**.
*CT angiography to rule out vascular injury*
- Although the thigh is deformed, the **neurovascular exam is normal**, meaning there is no immediate indication for **CT angiography**.
- In the setting of **hypotension** and shock, diagnostic imaging that requires patient transport out of the resuscitation bay is premature and potentially life-threatening.
