AIM Describe the use of 320 row detector CT scanner for 4 Dimensional CT acquisition on a specialized platform designed for wrist kinematic evaluation and to demonstrate the utility of 4 Dimensional CT in the assessment of wrist biomechanics before and after surgical repair. MATERIALS AND METHODS Six wrists (1 volunteer and 4 patients) were uniformly imaged with conventional X-rays and 4 Dime...

Instability of the scapholunate joint is frequently manifested by wrist pain and is sometimes visualized by a 2 to 4 mm gap between the scaphoid and lunate. Surgical repairs have had limited success, in part due to the surgeon being unsure which ligament or ligaments have been torn until the time of surgery. Various methods have been used to describe this gap between the bones and various level...

From a kinetic point of view, the wrist is considered stable when it is capable of resisting load without suffering injury. Several prerequisites are necessary for the wrist to be kinetically stable: bone morphology, normal articulating surfaces, ligaments, the sensorimotor system, the muscles crossing the wrist, and all nerves connecting to ligaments and muscles. Failure of any one of these fa...