ABOS Part I Comprehensive Review - Batch 9

Question 1

A 45-year-old active male presents to the emergency department after a fall directly onto his shoulder. He complains of severe pain and inability to move his left arm. Radiographs are obtained, as shown below. Based on the provided images and the pat

Accepted Answer

C. A displaced Neer 2-part surgical neck fracture; managed with a sling, pain control, and consideration for ORIF given patient's age and activity level.

Question 2

Following the initial assessment, the 45-year-old active male with the displaced proximal humerus surgical neck fracture (as seen in the provided images) elects for surgical management. The orthopedic surgeon plans for open reduction internal fixatio

Accepted Answer

B. For active, physiologically younger patients with displaced fractures, surgery offers a more reliable path to good functional outcomes and reduces the risk of painful malunion or nonunion compared to non-operative treatment.

Question 3

The orthopedic surgeon proceeds with open reduction internal fixation (ORIF) of the displaced proximal humerus surgical neck fracture in the 45-year-old active male, utilizing a deltopectoral approach. During this approach, which of the following neu

Accepted Answer

C. Axillary nerve

Question 4

Six months after successful open reduction internal fixation (ORIF) of his displaced proximal humerus surgical neck fracture, the 45-year-old active male reports persistent shoulder pain and limited range of motion, particularly in external rotation

Accepted Answer

C. Subacromial impingement due to prominent hardware or malunion of the greater tuberosity

Question 5

A 78-year-old sedentary female with low functional demands presents with a similar displaced proximal humerus surgical neck fracture as shown in the images. She has significant comorbidities, including severe osteoporosis and poorly controlled diabet

Accepted Answer

C. Non-operative management with a sling, early pendulum exercises, and pain control.

Question 6

During the open reduction internal fixation (ORIF) of the displaced proximal humerus surgical neck fracture in the 45-year-old active male, the surgeon uses a proximal humerus locking plate. Which of the following is a primary biomechanical advantage

Accepted Answer

B. It provides a fixed-angle construct, creating a more stable construct in osteoporotic bone.

Question 7

A 45-year-old male with a displaced proximal humerus surgical neck fracture, as depicted in the radiographs, is considering surgical intervention. During the discussion of potential complications, the surgeon emphasizes the risk of osteonecrosis of t

Accepted Answer

C. Neer 4-part fracture with significant displacement

Question 8

The 45-year-old active male, having undergone successful ORIF for his displaced proximal humerus surgical neck fracture, is now 6 weeks post-operative. He is progressing well with passive range of motion exercises. Which of the following is the most

Accepted Answer

B. Initiation of active assisted range of motion (AAROM) exercises, while avoiding active abduction against gravity.

Question 9

A 45-year-old active male presents with a displaced proximal humerus surgical neck fracture, as shown in the images. He is concerned about the long-term implications of non-operative management, specifically the risk of malunion. Which of the followi

Accepted Answer

B. Impingement and limited range of motion, particularly abduction and external rotation

Question 10

During the surgical approach for open reduction internal fixation of a proximal humerus fracture, the deltopectoral interval is utilized. Which of the following anatomical landmarks is crucial for identifying and safely developing this interval?

Accepted Answer

C. The cephalic vein, which lies within the interval between the deltoid and pectoralis major muscles.

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Key Takeaway