Table 1.
Patient demographics and comparative activity scores after metal-on-metal THAs
| Patient characteristics | Preoperative | Small femoral head (28 mm and 36 mm) | Large femoral head (40 mm and 44 mm) | p Value (small versus large) |
|---|---|---|---|---|
| Number of patients (male:female) | 48 (6:42) | 56 (48:8) | N/A | |
| Mean age (range) | 63.8 (41–77) | 59.5 (36–74) | 0.003 | |
| Approach (% posterolateral:posterior) | 49:51 | 25:75 | N/A | |
| Harris hip score (mean ± SD) | 43.3 ± 11.9 | 84.8 ± 13.7 | 86.4 ± 15.0 | 0.58 |
| UCLA Activity Score (mean ± SD) | 3.82 ± 2.0 | 6.0 ± 1.6 | 6.4 ± 1.7 | 0.19 |
N/A = not applicable.