MS-3437

A 32-year-old cyclist has fallen off his bicycle and landed on an outstretched arm. He complains of pain and swelling in his left shoulder. Upon examination, the shoulder is tender and swollen to the touch. The patient experiences pain when attempting active and passive movement of the shoulder joint. A radiograph is ordered, which reveals an undisplaced fracture of the surgical neck of the humerus. What muscle, in addition to the deltoid muscle, is supplied by the axillary nerve, which is commonly injured in cases of surgical neck humerus fractures? Choose from the following options: subscapularis, teres major, supraspinatus, teres minor, or infraspinatus.