A 23-year-old man is evaluated due to acute left shoulder pain. In a street fight, the patient has received a blow to the arm. Physical examinations show flattening of the left deltoid muscle and loss of sensation in the overlying skin. The bilateral radial pulse is intact. Which of the following injuries explain the patient's presentation?

Question

Quizplus · Accepted Answer

Eductional Objective: Anterior dislocation of the humerus after shoulder injury would lead to deltoid muscle flattening and acromial prominence. This results from a blow to an externally rotated and abducted arm. Anterior humerus dislocation causes axillary nerve injury leading to deltoid muscle paralysis, and loss of sensation in the overlying skin.

A 23-Year-Old Man Is Evaluated Due to Acute Left Shoulder