USMLE Bible 1 Flashcards
Common cause of radial nerve injury.
Injury to the shaft of the humerus.
Common cause of median nerve injury.
Injury to the supracondyle of the humerus.
Common injury to the ulnar nerve
injury to the medial epicondyle of the humerus
Common cause of injury to the axillary nerve
Injury to the surgical neck of the humerus and or anterior shoulder dislocation.
Common injury to the musculocutaneous nerve.
compression between biceps aponeurosis and bachialis fascia.
Motor deficit in median nerve injury.
forearm pronation wrist flexion finger flexion thumb movement long term thenar atrophy
Median nerve sensory deficit.
loss of sensation in the thumb
lateral aspect of the palm
first 2.5 fingers index, middle, and half of the ring finger
Motor deficit in radial nerve injury.
loss of triceps reflex
brachiradialis reflex
extensor carpi radialis longus (classic wrist drop)
Sensory deficit in radial nerve injury.
loss of sensation to the posterior antebrachial cutaneous and the posterior brachial cutaneous
Motor deficit in ulnar nerve injury
causes impaired flexion and adduction of the wrist as well as impaired adduction of the ulnar 2 fingers and thumb
sensory deficit in ulnar nerve injury
Loss of sensation to the medial aspect of the palm as well as loss of sensation to the pinky and medial 1/2 of the ring finger
Motor deficit im axillary nerve injury
Loss of complete deltoid movement
Sensory deficit of axillary nerve injury
Loss of sensation over the deltoid muscle as well as the skin covering the inferior aspect of the deltoid.
Motor deficit of the musculocutaneous nerve.
Loss of function of coracobrachialis, biceps, and brachialis muscle.
Sensory deficit in musculocutaneous nerve injury
Loss of sensation to the radial aspect of the forearm
Wrist drop is an injury to the
Radial nerve
The muscles innervated by the radial nerve include
Mnemonic for muscles innervated by the radial nerve:
BEST
Brachioradialis
Extensors of wrist/fingers
Supinator