Abstract: Prosthetic wrist implants, instruments, and methods for implanting the wrist implant. A prosthetic wrist implant is disposed between a patient's radius and carpal complex bones. It includes a radial implant component having an elongated concave articulate front surface and a rear surface which is screwed into the radial bone. A carpal bone implant includes a base member with a front surface and a flat rear surface which is screwed into the carpal bone complex. Alternatively, a post may extend from either the back of the radial implant rear surface of the carpal bone implant, or both, and be implanted into the radial bone or the carpal bone respectively. An articulating bearing member having a flat bottom surface is fastened to the front surface of the carpal bone implant base member and an elongated convex surface slidingly engages the concave articular surface of the radial implant to permit articulation between the radial and carpal bones.

Abstract: A prosthetic wrist implant and method for implanting the wrist implant. The prosthetic wrist implant is disposed between a patient's radius and carpal complex bones. It includes a radial implant component having an elongated concave articulate front surface and a post member projecting from the back of the radial implant into the cavity of the radial bone. A carpal bone implant includes a planar member with a front face and a flat rear face and a second post member projecting from the rear face into a cavity of the carpal bone complex. An articulating bearing member has a flat bottom surface fastened to the front face of the planar member and an elongated convex surface slidingly engaging the concave articular surface of the radial implant to permit articulation between the radial and carpal bones.

Abstract: An endoscopic surgical procedure and instruments are disclosed for the treatment of transverse carpal ligaments and similar anatomical structures. The procedure enables the release of the carpal ligament under endoscopic control and through only a single incision. A uniquely shaped grooved cannula is provided to enable access to the carpal tunnel while also stabilizing instruments used in the procedure. The procedure involves the insertion of the cannula into the carpal tunnel through a single incision. The cannula has a longitudinal groove which is positioned to face or abut the ligament and which axially receives an endoscope through its proximal open end and obliquely receives a knife which is then positioned to cut the ligament from the side where the scope is placed.