Carpal Tunnel Syndrome is a condition affecting the hand and wrist. The carpal tunnel is a space in the wrist surrounded by wrist bones and by a rigid ligament that links the bones together.

Through this small tunnel pass the flexing tendons of the fingers and thumb as well as the median nerve.  These tendons attach muscles to bones in the hand and transfer the movement of the fingers from muscles to bones.  The median nerve carries signals from the brain to control the actions of the fingers and hand.