The Journal of Hand Surgery (European Volume)2014, Vol. 39E(8) 826– 832
Between May 1999 and April 2002 a total of 69 consecutive thumb carpometacarpal joint arthoplasties were performed in a total of 64 patients for carpometacarpal joint osteoarthritis using the cementless hydroxyapatite (HA)-coated unconstrained ARPE implant. Clinical, functional and radiological results at 10-year follow-up are presented. Survival analysis was performed using the Kaplan–Meier method. Of the 64 patients, fourwere lost to follow-up, 60 implants (92.3%) were functional and five (7.7%) were not (two dislocated, two were
removed and one with aseptic loosening). Survival estimate for functional implants over 10 years was 93.9%(95% confidence interval 82.3–97.9). The radiographs were satisfactory in 82.4%. There was subsidence of thecup in 15.8%. Thumb carpometacarpal joint arthroplasty with the ARPE implant offers a reliable treatmentalternative in patients with Eaton grade III or IV thumb carpometacarpal joint arthritis in the presence of good bone stock.