Chapter 4: Upper Limb (continued) Flashcards
Another name for median nerve damage caused by an injury at the elbow?
Where is the injury found to cause damage of the median nerve?
supracondylar fracture of the humerus
Do lesions of median nerve at the wrist present with hand of benediction?
no they don’t
What are some locations that can lead to ulnar nerve injury?
elbow (medial epicondyle), wrist (lacerations), or fracture of hook of hamate, clavicle fracture
What are some symptoms caused by fracture of the surgical neck of the humerus or inferior dislocation of the shoulder damaging the axillary nerve?
- loss of abduction of the arm to the horizon
- sensory loss over the deltoid muscle
What is the major typical symptom of injury to the long thoracic nerve?
“winged scapula”
An injury to the suprascapular nerve would cause what symptoms?
- loss of shoulder abduction between 0 and 15 degrees (supraspinatus muscle)
- weakness of lateral roation of shoulder (infraspinatus muscle)
What nerve roots carry the axillary nerve?
C5, C6
What nerve roots carry the musculocutaneous nerves?
C5, C6, C7
What nerve roots carry the radial nerve?
C5, C6, C7, C8, T1
What nerve roots carry the median nerve?
C5, C6, C7, C8, T1
What nerve roots carry the ulnar nerve?
C8, T1
Where is altered sensation found when there is damage to the axillary nerve?
lateral arm
Where is the altered sensation felt in one who has damage to the musculocutaneous nerve?
lateral forearm
Where is the altered sensation felt in one with radial nerve damage?
dorsum of hand over first dorsal interosseous and anatomic snuffbox
Where is the altered sensation felt in one with damage to the median nerve?
lateral 3 1/2 digits; lateral palm
Where is altered sensation found in one with ulnar nerve damage?
medial 1 1/2 digits; medial palm
Where is motor weakness found in those with axillary nerve damage?
abduction of shoulder
Where is motor weakness found in one with musculocutaneous nerve damage?
flexion of forearm
supination
Where is motor weakness found in those with radial nerve damage?
wrist extension
metacarpo-phalangeal extension
supination
Where is motor weakness found in those with median nerve damage?
wrist flexion
finger flexion
pronation
thumb opposition
Where is motor weakness found in those with ulnar nerve damage?
wrist flexion
finger spreading
finger extension
thumb adduction
Common sign of a radial nerve lesion?
wrist drop
Common sign of a median nerve lesion?
ape hand
hand of benediction
ulnar deviation at wrist
What is a common sign of lesion at ulnar nerve?
claw hand
radial deviation at wrist
