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what bone or skeletal disorder affect the appendicular skeleton in the upper extremity

what bone or skeletal disorder affect the appendicular skeleton in the upper extremity

Science   Anatomy-And-Physiology   
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Answer #1

Forearm,wrist ,hand disorders

1)kienbocks disease

it is the avascular necrosis of the lunate carpel bone in the wrist due to the impairment in the blood supply

features are softening,hardening,and fragmentation of teh lunate bone

it may lead to osteoarthritis of the wrist joint.

2)Quervains disease

inflammation of the tendon of the adductor pollicis longus and extensor pollicis brevis.

3)Trigger fingers

it is due to the tendinovaginitis of the flexor tendons

Most commonly affected in the thumb finger

More common in patients with rheumatoid arthritis

4)Dupuytrens contracture

It is due to the contracture of the palmar aponeurosis

Because of this , there will a cord like tendon projecting into the ring and little finger

5)Syndactyly: webbing of the 2 or more finger

6)polydactyly : webbing of more than 5 fingers

7)Mcrodactyly: enlargement of the finger

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