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14 Cards in this Set

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  • Back
NERVE LEVEL OF LESION
C5-c6
Neck (posterior triangle)
Forearm pronated, palm facing backward
(“Waiter’s tip hand”, Erb-Duchenne paralysis)
T1 Neck (posterior triangle)
[pulmonary carcinoma or “cervical” rib may also involve T1]
Loss of intrinsic mm. of hand
“Clawed” hand because of unopposed long flexors and extensors (Klemke’s paralysis)
Long Thoracic (C5,6,7) Superior axilla
Winged scapula (serratus anterior)
Suprascapular (C5,6) Neck (posterior triangle)
Difficulty initiating ABduction of arm (supraspinatus, infraspinatus)
Musculocutaneous (C5,6,7) Axilla
Severely weak forearm flexion and supination (biceps, brachialis)
Loss of sensation in lateral forearm
Axillary
(C5,6) Surgical neck of humerus and quadangular space
Difficulty elevating limb above horizontal (deltoid)
Radial
(C5-T1) Axilla
Crutch paralysis (“Sat. night palsy”)
Wrist drop (loss of forearm extension)
Sensory loss on posterior hand
Loss of extension of proximal phalanges
Loss of ABduction and Adduction of fingers and thumb (extensor mm.)
Radial Radial groove of humerus
Same as above, but little loss of forearm extension
Radial Neck of radius (deep radial)
NO WRIST DROP!!
Loss of extension of phalanges and thumb movements
NO SENSORY LOSS
Median
(C5-T1) Axilla, arm, elbow
Loss of forearm pronation
Weak wrist and finger extension
Weak thumb flexion and ABduction
NO thumb opposition (compensated for by ADductor pollicus longus)
Flat thenar eminence (paralysis of thenar m.)
Paralysis of 1st two lumbricals (poor fine motor control of 2nd and 3rd digits)
Severe loss of sensation in lateral palmar surface of hand (including tips of fingers)
Loss of sweating in lateral palm (SNS)
Median Wrist
Same as above, but NO loss of pronation or hand flexion
Ulnar
(C7-T1) Axilla, arm or medial epicondyle
Motor and sensory loss to hand
Hand drawn radially upon wrist flexion (due to flexor carpi radialis)
Paralysis of most intrinsic hand mm. (difficulty making a fist)
NO flexion of ring finger or little finger at DIP joint (“claw-hand” appearance)
Ulnar Wrist
Same as above, but clawing is more severe because flexor digitorum profundus is intact and there is NO loss of Adduction of hand.
Median and Ulnar Proximal to elbow
Same as above (4) cases, but clawing is minimal because all long flexors are lost; clawing increases during recovery