A Study of Hybrid Total Hip Replacement

Sixty-five hybrid total hip replacements (THRs) in 58 patients with osteoarthritis (OA) and rheumatoid arthritis (RA) were analysed with regard to chinical and radiographical findings more than one year after surgery. The mean follow-up period was 22.2 months. Results are as follows; (1) Thigh pain occurred in 5.5% of OA cases (55 cases) and 10% of RA cases (10 cases). (2) Radiolucent lines were found in zone 1 (21.5%). (3) Bone cement gaps were found in 14.5% of OA cases and 0% of RA cases. (4) No osteolysis was found in any cases.