Intracarpal synovitis related to Dacron interposition after trapeziectomy: a report of three cases.

To prevent the mechanical consequences of trapeziectomy, interposition devices are promoted, such a Dacron spacer. We report three cases of osteolysis and synovitis related to the use of such a device. This phenomenon occurred 4 months after insertion and required revision surgery after 9 months of follow-up because of pain and extensive osteolysis of the carpal bones.