SplintER Series: Two cases of shoulder pain

A 17 year-old football player with prior shoulder dislocation presents to the emergency department reporting shoulder pain after fall. You obtain shoulder x-rays and see the following injury (Image courtesy of Richard Hopkins, MD).
What is your diagnosis? Are there any associated lesions you could expect to find? What is your emergency department management?
A 45 year-old male presents with right thumb pain and deformity after falling off his bicycle. You obtain hand x-rays and see the following images. What is the most likely diagnosis, differential diagnosis, and management plan?
Figure 1. AP and oblique views of the hand. Author’s own images.
Figure 1: Terminal extensor tendon avulsion at distal interphalangeal joint of 5th digit
A 17-year-old baseball player presents complaining of finger pain and difficulty straightening his finger after a baseball game. You obtain x-rays and see the following fracture (photo credit).
What is your diagnosis and emergency department management?