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A 38-year-old right-hand-dominant computer programmer trips over his cape and falls on his right hand at a renaissance fair. He experiences immediate pain and swelling about the base of his right thumb. He presents to your office where initial radiographs are obtained (Figure A). The muscles responsible for the characteristic deforming forces on the thumb metacarpal shaft are innervated by which nerve(s)?
Ulnar nerve only
Ulnar and anterior interosseous nerve (AIN)
Ulnar and posterior interosseous nerve (PIN)
Ulnar and recurrent branch of the median nerve
Recurrent branch of the median nerve and AIN
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Which of the following muscles provide the primary deforming forces to Bennett and Rolando fractures (base of the 1st metacarpal fractures)?
Flexor pollicis longus
Extensor pollicis longus
Adductor pollicis longus and abductor pollicis
Abductor pollicis longus and adductor pollicis