The study of contact biomechanics of the wrist is a challenge. This is partly due to the
relatively small size of the joint as well as the lack of space in the radiocarpal joint which makes the
delivery of investigative materials such as pressure sensitive film without causing artifact, difficult.
Fortunately, a number of authors have studied the intact wrist, the scapholunate ligament injured
wrist, the proximal row carpectomy and the scaphoid excision, four bone fusion. Despite some contrasting
findings, there are some general concepts that we understand about wrist mechanics.