ABOS Part I Comprehensive Review - Batch 32

Question 1

A 45-year-old male presents to the emergency department after a high-energy fall onto an outstretched hand (FOOSH). Radiographs reveal a fracture of the ulnar diaphysis with anterior angulation and an associated anterior dislocation of the radial hea

Accepted Answer

Type I

Question 2

A 38-year-old construction worker sustains a Bado Type II Monteggia fracture-dislocation after a fall from a height. During surgical planning, the orthopedic surgeon reviews the relevant anatomy. Which of the following structures is considered the pr

Accepted Answer

Annular Ligament

Question 3

A 28-year-old male presents with a Bado Type III Monteggia fracture-dislocation after a motorcycle accident. Pre-operative neurovascular examination reveals a partial wrist drop and inability to extend the metacarpophalangeal (MCP) joints of the fing

Accepted Answer

Posterior Interosseous Nerve (PIN), due to its course through the supinator muscle and proximity to the radial neck.

Question 4

A 55-year-old female presents with a Bado Type I Monteggia fracture-dislocation. The surgical team is preparing for operative management. Based on the biomechanical principles outlined in the case, which of the following statements represents the cor

Accepted Answer

Anatomic reduction and rigid internal fixation of the ulna to restore forearm stability and facilitate spontaneous radial head reduction.

Question 5

A 62-year-old male presents with a complex Monteggia fracture-dislocation involving significant comminution of the ulnar shaft and suspected involvement of the radial head articular surface. The initial plain radiographs are difficult to interpret fu

Accepted Answer

Computed Tomography (CT) scan with 3D reconstructions

Question 6

A 40-year-old male undergoes open reduction and internal fixation for a Bado Type I Monteggia fracture-dislocation. The surgeon has successfully achieved anatomical reduction and rigid internal fixation of the ulnar fracture using a locking compressi

Accepted Answer

Assess the radial head for spontaneous concentric reduction and stability under fluoroscopy.

Question 7

A 32-year-old male undergoes ORIF for a Bado Type I Monteggia fracture-dislocation. Post-operatively, despite what the surgeon believes was rigid internal fixation of the ulna, fluoroscopy reveals persistent subluxation of the radial head. Based on t

Accepted Answer

Inadequate anatomical reduction or unstable fixation of the ulna; re-evaluate and revise ulnar fixation.

Question 8

A 22-year-old male presents with a Bado Type IV Monteggia fracture-dislocation after a high-energy trauma. During the initial assessment, he is found to have a complete wrist drop and inability to extend his fingers at the MCP joints, with no sensory

Accepted Answer

Observation, splinting, and electrophysiological studies, as most pre-operative palsies are neurapraxic and resolve spontaneously.

Question 9

A 48-year-old male has undergone successful ORIF of a Bado Type I Monteggia fracture-dislocation. He is now 5 days post-operative. The surgeon emphasizes the importance of a structured rehabilitation protocol. According to the case, what is the prima

Accepted Answer

Reduce pain and swelling, protect the surgical repair, and initiate controlled active-assisted/passive range of motion (AAROM/PROM) within a safe arc.

Question 10

A 68-year-old male with a history of head trauma presents with a severe, comminuted Bado Type II Monteggia fracture-dislocation. Due to the high-energy nature of the injury and his medical history, the surgeon is concerned about the development of he

Accepted Answer

Administration of perioperative non-steroidal anti-inflammatory drugs (NSAIDs) like indomethacin.

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Key Takeaway