34: Proximal Neuropathies of the Shoulder and Arm

Question 1

What can rotator cuff injury result in?

Answer 1

Suprascapular neuropathy

Question 2

What sensation does the suprascapular nerve typically supply?

Answer 2

Majority of deep sensory fibers (including pain fibers) to the shoulder joint

Question 3

What makes up the quadrilateral space?

Answer 3

Humerus, teres minor, teres major, and long head of triceps muscle

Question 4

Posterior trunk of axillary nerve innervates what part of deltoid? Anterior trunk?

Answer 4

Posterior head usually, and teres minor;
Anterior and middle heads

Question 5

Where can the LAC be compressed?

Answer 5

B/w biceps tendon or fascia and the BR, and bothersome with arm pronated and extended

Question 6

Spinal accessory nerve gets innervation from which cervical segments?

Answer 6

C1-4