Tendon versus Pyrocarbon Interpositional Arthroplasty in the Treatment of Trapeziometacarpal Osteoarthritis
Figure 2
The pyrocarbon interposition arthroplasty surgical procedure. (a, b) Posteroanterior and 45-degree oblique radiographs of a 62-year-old female with Eaton-Littler stage II trapeziometacarpal osteoarthritis. (c) The PyroDisk implant (arrow) was inserted in the trapezium space after resecting both the base of the first metacarpal bone and the distal trapezium using a sagittal saw and 3-mm burr to create concavity. The half flexor carpi radialis (FCR) tendon () was passed through the trapezium into the resected joint through the selected PyroDisk implant. (d) The FCR tendon then was continuously passed into the thumb metacarpal bases to exit dorsally through the prepared passage and sutured to the inserted portion of FCR tendon (arrowhead). (e, f) Posteroanterior and 45-degree oblique postoperative radiographs. Mc, metacarpal bone; Tp, trapezium.