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Wednesday, April 7, 2010

From orthopaedic dictionary

Ape hand Deformity

Ape hand: A deformity in which the thumb is extended and the hand flattened.Ape hand is caused by wasting of abductor indicis,thenar and hypothenar,interroseii and lumbrical muscules.It is seen in progressive spinal muscular atrophy or lesions of the median and ulnar nerve.

Claw hand deformity
Claw hand: A deformity of the hand that has a clawlike appearence .It results from paresis of the ulnar and or/median nerves,in which there is extension of the metacarpophalangeal joints and flexion of the interphalangeal joints,with associated flattening of the hand due to musculotendinous imbalance.

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