Peripheral nerve lesions - forearm

Question 1

Nerve lesion: Radial nerve at the spiral groove

Answer 1

Functional deficit: Extension of the hand at the wrist, Abduction of the hand at the wrist, Adduction of the hand at the wrist, Abduction of the thumb, Extension (any joint, MP or IP) of the 2nd digit of hand

Question 2

Nerve lesion: Musculocutaneous nerve (at its origin)

Answer 2

Functional deficit: None of the above

Question 3

Nerve lesion: Median nerve (at its origin)

Answer 3

Functional deficit: Pronation of the forearm, Flexion of the hand at the wrist, Abduction of the hand at the wrist, Flexion (any joint, MP or IP) of the thumb, Abduction of the thumb, Opposition of the thumb, Flexion (any joint, MP or IP) of the 2nd digit of hand, Extension (any joint, MP or IP) of the 2nd digit of hand

Question 4

Nerve lesion: Median nerve (in the carpal tunnel)

Answer 4

Functional deficit: Flexion (any joint, MP or IP) of the thumb, Abduction of the thumb, Opposition of the thumb, Flexion (any joint, MP or IP) of the 2nd digit of hand, Extension (any joint, MP or IP) of the 2nd digit of hand

Question 5

Nerve lesion: Ulnar nerve (at its origin)

Answer 5

Functional deficit: Flexion of the hand at the wrist, Adduction of the hand at the wrist, Flexion (any joint, MP or IP) of the thumb, Adduction of the thumb, Flexion (any joint, MP or IP) of the 2nd digit of hand, Extension (any joint, MP or IP) of the 2nd digit of hand, Abduction of the 2nd digit of hand, Adduction of the 2nd finger of hand

Question 6

Nerve lesion: Ulnar nerve (at the wrist)

Answer 6

Functional deficit: Flexion (any joint, MP or IP) of the thumb, Adduction of the thumb, Flexion (any joint, MP or IP) of the 2nd digit of hand, Extension (any joint, MP or IP) of the 2nd digit of hand, Abduction of the 2nd digit of hand, Adduction of the 2nd finger of hand