what is a birth defect where there is no joints in the thumbs?

Question

my husband was born with a birth defect where he has no joints in his thumbs does anyone know what this is called

Answer 1

In arthrogryposis multiplex congenita, many joints become "frozen" and consequently cannot bend. Many children with this defect have weakened muscles. It is likely that decreased movement of the muscles and joints before birth causes the decreased movement of the joints after birth. The cause is unknown. Sometimes the nerves that would normally move the bones in the affected joints are also impaired. Infants with the defect may also have dislocated hips, knees, or elbows.

Placing the limbs in a cast and performing physical therapy, in which the stiff joints are carefully manipulated, may improve joint movements. Surgically freeing the bones from attached tissue sometimes results in more normal joint movement

Answer 2

i dont know but you can find answers at www.webmd.com