Clinical Anatomy — Flashcards

Flashcard 91: A lesion to the _____ would result in difficulty flexing elbow and loss of sensation on the lateral forearm

Answer: musculocutaneous nerve

Flashcard 92: Injury to the _____ nerve presents as decreased sensation of upper anterior thigh and an absent cremasteric reflex.

Answer: genitofemoral

Flashcard 93: A lesion to the _____ of the brachial plexus would result in Klumpke palsy (total claw hand)

Answer: lower trunk

Extra: Klumpke palsy involves the C8 and T1 nerve roots, which form the lower trunk of the brachial plexus. It commonly presents as a 'total claw hand' due to loss of function of the intrinsic hand muscles.

Flashcard 94: The superior gluteal nerve is commonly injured due to _____ injection to the upper medial gluteal region (iatrogenic).

Answer: intramuscular

Flashcard 95: _____ nerve (C5-T1) injury is commonly due to:- anteromedial supracondylar fracture of the humerus (proximal lesion)- carpal tunnel syndrome (distal lesion)- wrist laceration (distal lesion)

Answer: Median

Flashcard 96: A lesion to the _____ results in "Saturday night palsy", which presents as wrist drop.

Answer: radial nerve

Extra: Saturday night palsy occurs due to compression of the radial nerve against the humerus (classically from draping an arm over a chair while asleep). Since the radial nerve innervates the extensors of the wrist and fingers, the characteristic finding is wrist drop.

Flashcard 97: Basilar skull fractures most often follow traumatic head injuries and commonly involve the _____ segment of the temporal bone

Answer: petrous

Flashcard 98: Proximal tibial nerve lesions present with:- foot _____flexion- foot everted at rest- loss of foot inversion- weakness of the extrinsic muscles of the foot

Answer: dorsi

Flashcard 99: When the acoustic neuroma affects the _____ fibers of the facial nerve, there will be hypoaesthesia of the posterior meatal wall

Answer: sensory

Flashcard 100: _____ (condition) is due to traction or tear of the upper trunk (C5-C6 roots).

Answer: Erb palsy