carpal tunnel syndrome. 1  a medical condition that is characterized by pain, numbness, etc. in the wrist, palm, fingers, and thumb, usually caused by repetitive hand movement, as in typing or knitting, which swells the tissue surrounding the nerve in a tunnel-like passage (carpal tunnel) in the wrist.
1 The radius is located laterally, nearer the thumb, and the ulna medially, nearer the little finger.The radius and the ulna have a styloid process at the distal end and are attachment sites for many muscles.  The radius is smaller than the ulna.
Radius. The radius is the lateral bone. The proximal part of the radius has a disc-like head that articulates with the capitulum of the humerus. The distal end of the radius widens and forms the primary articulation with the proximal carpal bones of the wrist.Because of the proximal articulation, the radius can cross over the front of the ulna when the hand is turned from one side to the other.emur (thigh). The femur is the only bone of the thigh and it is the heaviest and strongest bone in the body. The proximal part of the femur has a ball-like head that fits into the acetabulum of the hip bone.