Table 4: Randomized Controlled Trial on Metal-on-Metal Hip Resurfacing Arthroplasty: Study Characteristics*.
| Study Design and Period |
Duration of Follow-up (Years) Median (Range) |
Groups | Number of patients (hips) |
Mean age Years (range) |
Preop Diagnosis (%) |
Prosthesis | Patients Available for Follow-Up |
|---|---|---|---|---|---|---|---|
| RCT (block randomization) 1993–1995 | 8.5 (8–10) | Hip resurfacing | 11 | 46 (16–55) | OA (64) | McMinn | All |
| THR | 13 | 50 (22–54) | OA (62) | Exeter | All |
*
Howie et al.; (33) The trial was stopped after 2 years of recruitment because of a high incidence of failure of the cemented hip resurfacing arthroplasty. OA indicates osteoarthritis.