A 23-year-old male student reports to a health clinic and ex…
A 23-year-old male student reports to a health clinic and explains that he fell asleep with his left upper limb draped over the back of a couch. He complains of numbness and paresthesia (“pins and needles” feeling) over the dorsum of his hand on the lateral side, and is unable to extend his elbow. He cannot extend the wrist to support the weight of his left hand and notices it’s difficult to hold his hand out in a handshake position or to grab something in this position. What nerve was most likely damaged in this individual?