Table 8 Clinical follow-up information for two study groups
From: Metal-on-metal hip resurfacing in patients younger than 50 years: a retrospective analysis
Variable | Group 1—under 50 | Group 2—over 50 | p value |
|---|---|---|---|
Preoperative | |||
HHS | 58 ± 6.47 | 49 ± 7.56 | <0.0001* |
Postoperative | |||
HHS | 97 ± 6.80 | 97 ± 6.60 | 1.000 |
UCLA activity score | 7.6 ± 1.91 | 7.4 ± 1.90 | 0.0033* |
High-impact UCLA, no. of cases (%) | 230/539 (43%) | 377/1031 (37%) | 0.0183* |
VAS pain: regular | 0.2 ± 0.80 | 0.2 ± 0.74 | 1.000 |
VAS pain: worse | 1.5 ± 2.07 | 1.1 ± 1.78 | <0.0001* |
Combined ROM | 258 ± 46.1 | 264 ± 41.9 | <0.0001* |
Radiographic data | |||
AIA | 39.6 ± 8.14 | 39.6 ± 8.15 | 1.000 |
Under RAIL, no. of hips (%) | 1138/1238 (92%) | 1807/1918 (94%) | 0.0366* |
Radiolucency, no. of hips (%) | 0 (0.0%) | 3 (0.2%) | 0.1645 |
Osteolysis, no. of hips (%) | 0 (0.0%) | 0 (0.0%) | 1.000 |