Total interruption of the radial nerve at midarm produces specific findings on physical examination. The most complete description of the neurologic deficit includes:
A.Paralysis of the thumb extensors, interphalangeal joint extensors, extensor carpi radialis, and extensor carpi ulnaris.
B.Paralysis of the extensor carpi radialis longus and brevis, abductor pollicis longus, extensor pollicis brevis, and extensor pollicis longus.
C.Paralysis of the brachioradialis, extensor carpi radialis longus and brevis, extensor carpi ulnaris, thumb extensors, and metacarpophalangeal (MCP) joint extensors, and loss of cutaneous sensibility at the dorsal aspect of the thumb and index fingers.
D.Paralysis of the brachioradialis, extensor carpi radialis longus and brevis, radialis, thumb extensors, finger MCP joint extensors, and flexor carpi radialis, and loss of sensation in the cutaneous distribution over the dorsal aspect of thumb and index fingers.
Answer:C
Total interruption of the radial nerve at midarm produces specific findings on physical examination. The most complete description of the neurologic deficit includes:
A.Paralysis of the thumb extensors, interphalangeal joint extensors, extensor carpi radialis, and extensor carpi ulnaris. B.Paralysis of the extensor carpi radialis longus and brevis, abductor pollicis longus, extensor pollicis brevis, and extensor pollicis longus. C.Paralysis of the brachioradialis, extensor carpi radialis longus and brevis, extensor carpi ulnaris, thumb extensors, and metacarpophalangeal (MCP) joint extensors, and loss of cutaneous sensibility at the dorsal aspect of the thumb and index fingers. D.Paralysis of the brachioradialis, extensor carpi radialis longus and brevis, radialis, thumb extensors, finger MCP joint extensors, and flexor carpi radialis, and loss of sensation in the cutaneous distribution over the dorsal aspect of thumb and index fingers.