A 45-year-old man presents in the emergency department with a three-week history of weakness in extending his left elbow and wrist, with loss of sensation over the dorsum of his forearm and posterior aspect of the web space between thumb and forefinger. He had been using a crutch on the left side to assist in walking due to an injured left foot. The daignosis is radial nerve palsey due to the compression of the crutch.
What is the course of the radial nerve in the arm and which group of muscles will be affected by radial nerve palsey?
Why would a patient with writs-drop resulting from radial nerve injury be unable to perform a power grip?
A 30-year-old woman is out ice-skating when she stumbles and falls om her outstretched right hand, injuring her wrist.
She continues to skate, although with pain in the region of the anatomical snuff box. When she finally goes to the emergency department, an X-ray is taken and it is discovered that she has suffered a fracture of one of the bones of her wrist.
The fracture did not appear to be healing, so she was finally referred to an orthopedic surgeon.
What is the anatomical snuff box?
What bone did she most-likely break
What other injuries commonly result from falls on outstretched hands?
Visiting one of your dental patients at the maternity hospital you learn that the delivery was a difficult one and that her son was born with a paralyzed right arm. The new mother anxiously describes to you, in great detail, how her baby can move all his fingers on both hands but that his right arm just hangs limply and fully outstretched close to his body.
What is the likely cause of this apparent birth defect?