<unk>  is a deformity in humans who cannot move the thumb away from the rest of the<unk> . It is an inability to abduct the thumb. Abduction of the thumb refers to the specific capacity to orient the thumb perpendicularly to the ventral (palmar) surface of the<unk> . Opposition refers specifically the ability to "swing" the first metacarpal such that the tip of the thumb may touch the distal end of the 5th phalanx and if we put the<unk>  on the table as the palm upward the thumb can not point to the sky. The<unk>  is caused by damage to the distal median nerve (also called a Median Claw lesion), and subsequent loss of opponens pollicis muscle function. The name<unk> " is misleading, as some<unk> s do not have opposable thumbs. It can occur with an injury of the median nerve either at the elbow or the wrist, impairing the thenar muscles and opponens pollicis muscle.<unk>  is one aspect of median nerve palsy, which is usually caused by deep injuries to the arm, forearm and wrist area.
Ape hand deformity
Lid lag
Rocker bottom foot
Habit-tic deformity
Planovalgus deformity
Swan neck deformity
Webbed neck
Thumb hypoplasia