1. A new type of prosthesis has been developed, which proves satisfactory for carpometacarpal disarticulations.
2. With this type of amputation, most of the normal function at the wrist is retained, and it can be used in working the prosthesis.
3. The stump, without a prosthesis, is more useful than a forearm stump.
4. As much of the upper extremity as possible should be saved during an amputation.