A complex network of smaller ligaments hold each carpal to the next. Tendons of the wrist and hand lie within tendon sheaths which surround the tendon to help protect the tendon from other structures. Pressure when the wrist is straight is relatively minimal.
Pressure Dramatically increases with positions of wrist flexion.
Positions of wrist flexion also cause increased stress to the joints between the carpal bones and increased tension to the tendons crossing the wrist. When the body is stressed, tissue damage occurs as a natural process. If adequate recovery time is allowed before the tissues are again stressed, the body tissues rebuild themselves to a stronger level. However, if recovery time is inadequate symptoms can result. Adequate recovery time will then be needed to again enter the cycle.