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Ape hand deformity is a deformity in humans who cannot move the thumb away from the rest of the hand. It is an inability to abduct the thumb. [ 1 ] Abduction of the thumb refers to the specific capacity to orient the thumb perpendicularly to the ventral (palmar) surface of the hand.
Carpal tunnel syndrome can result in thenar muscle paralysis which can then lead to ape hand deformity if left untreated. [11] Ape hand deformity can also be seen in the hand of benediction deformity. [citation needed] The Anterior Interosseus Nerve (AIN), a branch of the median nerve, only accounts for the movement of the fingers in hand and ...
A hand imitating an ulnar claw. The metacarpophalangeal joints of the 4th and 5th fingers are extended and the Interphalangeal joints of the same fingers are flexed.. An ulnar claw, also known as claw hand or Spinster’s Claw, is a deformity or an abnormal attitude of the hand that develops due to ulnar nerve damage causing paralysis of the lumbricals.
Many of these deformities, such as Dupuytren's contracture, swan-neck deformity etc. can be associated with both a chronic, progressive event, or an acute injury; [17] such as boutonnière deformity, which can be caused by trauma, [1] or induced by a chronic condition like rheumatoid arthritis. [20]
Anterior interosseous syndrome is a medical condition in which damage to the anterior interosseous nerve (AIN), a distal motor and sensory branch of the median nerve, classically with severe weakness of the pincer movement of the thumb and index finger, and can cause transient pain in the wrist (the terminal, sensory branch of the AIN innervates the bones of the carpal tunnel).
The hand of benediction, also known as benediction sign or preacher's hand, has been said to occur as a result of prolonged compression or injury of the median nerve at the forearm or elbow. [ 1 ] More recently it has been shown that the clinical appearance of a high median nerve palsy is different from the classical hand of benediction or ...
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The median nerve is a nerve in humans and other animals in the upper limb. It is one of the five main nerves originating from the brachial plexus.. The median nerve originates from the lateral and medial cords of the brachial plexus, [1] and has contributions from ventral roots of C6-C7 (lateral cord) and C8 and T1 (medial cord).
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