Case history #1
A 24-year-old man presents to the emergency department after a fall onto his shoulder while playing football. He is an otherwise healthy man who has had no prior shoulder problems. The patient is unable to actively abduct or flex his arm secondary to pain. He is maintaining his arm in a position of slight external rotation and abduction. There is a palpable prominence inferior to his coracoid process. Sensation in his axillary nerve distribution is intact with a normal neurovascular examination.
Case history #2
A 35-year-old man presents to the emergency department having jammed his index finger at work 6 hours prior to presentation. There is significant swelling at his PIP joint with apparent dorsal displacement of his middle phalanx in relation to the proximal phalanx. He is unable to flex or extend his finger secondary to pain. Sensation on the radial and ulnar border of the digit is intact with capillary refill normal at less than 2 seconds.