ABOS Part I Comprehensive Review - Batch 97

Question 1

A 45-year-old male presents to the emergency department after a high-speed motor vehicle collision. He is hypotensive (BP 80/50 mmHg) and tachycardic (HR 125 bpm). Physical examination reveals obvious instability of the pelvic ring with ecchymosis ov

Accepted Answer

Immediate application of a pelvic binder and transfer to the operating room for external fixation.

Question 2

A 28-year-old male sustains a posterior hip dislocation after a dashboard injury in an MVC. On examination, his hip is internally rotated, adducted, and flexed. He has diminished sensation in the plantar aspect of his foot and weakness in ankle dorsi

Accepted Answer

Attempt closed reduction under conscious sedation as soon as possible.

Question 3

A 35-year-old construction worker sustains an open tibial shaft fracture (Gustilo-Anderson Type IIIA) after being struck by heavy machinery. He arrives in the ED 1 hour after injury. What is the immediate priority in his management after ATLS resusci

Accepted Answer

Perform emergent irrigation and debridement in the operating room.

Question 4

A 22-year-old football player presents with severe pain in his right lower leg after a direct blow. He complains of paresthesia in his foot and pain on passive dorsiflexion of his toes. The calf is tense to palpation. What is the most reliable diagno

Accepted Answer

Delta pressure (diastolic blood pressure minus intracompartmental pressure) less than 30 mmHg.

Question 5

A 30-year-old male sustains a high-energy knee injury with gross instability in all planes. Radiographs confirm a knee dislocation without associated fractures. Pulses are diminished in the dorsalis pedis and posterior tibial arteries. What is the mo

Accepted Answer

Immediate closed reduction followed by careful neurovascular reassessment.

Question 6

A 40-year-old male falls from a height, landing on his heels. He presents with bilateral heel pain. Radiographs show a displaced calcaneus fracture. Which associated injury should be specifically investigated?

Accepted Answer

Lumbar spine compression fracture.

Question 7

A 55-year-old female presents with midfoot pain and inability to bear weight after stepping off a curb awkwardly. Radiographs show subtle widening between the first and second cuneiforms. What is the most sensitive imaging modality to confirm a Lisfr

Accepted Answer

CT scan of the foot.

Question 8

A 60-year-old obese male sustains a high-energy knee injury, resulting in a Schatzker Type VI tibial plateau fracture. He has multiple open wounds and significant soft tissue swelling. What is the most appropriate initial surgical approach for this i

Accepted Answer

External fixation with provisional joint spanning, followed by delayed definitive fixation.

Question 9

A 48-year-old female presents after a motor vehicle accident with a comminuted fracture of the distal tibia extending into the ankle joint (pilon fracture). There is significant soft tissue swelling and blistering. What is the primary goal of immedia

Accepted Answer

Reduction of soft tissue swelling to prepare for definitive surgery.

Question 10

A 32-year-old male involved in a motorcycle accident sustains multiple long bone fractures (bilateral femoral and tibial shaft fractures). Three days post-injury, he develops acute respiratory distress, petechial rash on his chest and axilla, and alt

Accepted Answer

Fat embolism syndrome (FES)

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Key Takeaway