ABOS Part I Comprehensive Review - Batch 54

Question 1

A 25-year-old male presents to the emergency department after a direct fall onto the superior aspect of his right shoulder during a rugby match. He reports immediate severe pain and inability to lift his arm. On examination, there is marked superior

Accepted Answer

Type V

Question 2

A 30-year-old construction worker sustains a Rockwood Type III AC joint separation. Understanding the biomechanics of the AC joint is crucial for treatment planning. Which of the following statements accurately describes the primary role of the corac

Accepted Answer

They are the main stabilizers against superior translation of the clavicle.

Question 3

A 40-year-old male presents with a painful right shoulder after falling directly onto his acromion. Radiographs reveal complete tears of both the acromioclavicular (AC) and coracoclavicular (CC) ligaments. The distal clavicle is superiorly displaced

Accepted Answer

Type III

Question 4

A 32-year-old professional overhead baseball pitcher sustains a Rockwood Type III AC joint separation in his dominant throwing arm. He is highly motivated to return to elite-level competition as quickly and safely as possible. Given the controversy s

Accepted Answer

Immediate surgical reconstruction of the AC joint and CC ligaments.

Question 5

During an open reduction and internal fixation of a Rockwood Type V AC joint separation, the surgeon is carefully dissecting to expose the coracoid process for coracoclavicular ligament reconstruction. The anatomical illustration below highlights the

Accepted Answer

Brachial plexus and subclavian vessels

Question 6

A surgeon is performing an AC joint reconstruction using a suture-button system for coracoclavicular ligament reconstruction, as shown in the intraoperative image below. After achieving anatomical reduction of the clavicle, the sutures are tensioned

Accepted Answer

It approximates the clavicle to the coracoid process, functionally replacing the CC ligaments.

Question 7

A 35-year-old male underwent surgical repair for a Rockwood Type V AC joint separation. A post-operative radiograph is provided below.Based on the radiograph, which of the following statements best describes the primary fixation method used and its m

Accepted Answer

A suture-button construct, primarily reconstructing the coracoclavicular ligaments for vertical stability.

Question 8

A 48-year-old male undergoes surgical reconstruction for a Rockwood Type IV AC joint separation using a suture-button system. Six months post-operatively, he presents with persistent pain, instability, and a noticeable superior prominence of the dist

Accepted Answer

Perform a revision surgery with stronger fixation, potentially including allograft augmentation.

Question 9

A 29-year-old patient is 4 weeks post-operative from an AC joint reconstruction with a suture-button system. They are currently in Phase I (Protection & Early Motion) of their rehabilitation protocol. Which of the following activities is strictly con

Accepted Answer

Active cross-body adduction of the operative arm.

Question 10

A 55-year-old sedentary patient, 3 years after non-operative management of a Rockwood Type III AC joint separation, presents with chronic, localized pain and crepitus over the AC joint, particularly with overhead activities and reaching across the bo

Accepted Answer

Distal clavicle excision (Mumford procedure).

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Key Takeaway