Table 2.
Mean values (SD) of preoperative cross-sectional area (CSA) in millimeters squared and of radiological density in Hounsfield units (HU) in the healthy hip (without arthroplasty) and in the CoC and PE hips with arthroplasty before revision*
| Parameters | Healthy side | CoC hip | Difference | p value |
|---|---|---|---|---|
| CSA (mm2) | ||||
| Gluteus maxiumus | 3756 (648) | 3632 (637) | 3% | 0.64 |
| Gluteus medius + minimus | 4832 (542) | 4785 (534) | 1% | 0.82 |
| Density (HU) | ||||
| Gluteus maxiumus | 32.4 (10.3) | 29.5 (9.8) | 9% | 0.07 |
| Gluteus medius + minimus | 36.8 (11.3) | 32.6 (10.2) | 11% | 0.06 |
| Parameters | Healthy side | PE hip | Difference | p value |
|---|---|---|---|---|
| CSA (mm2) | ||||
| Gluteus maxiumus | 3854 (732) | 3435 (681) | 11% | 0.02 |
| Gluteus medius + minimus | 4952 (793) | 4438 (702) | 10% | 0.02 |
| Density (HU) | ||||
| Gluteus maxiumus | 34.2 (11.5) | 20.1 (9.3) | 41% | 0.001 |
| Gluteus medius + minimus | 38.5 (12.3) | 25.9 (10.4) | 33% | 0.001 |
* Gluteus medius and gluteus minimus were not individualized for measurements; CoC = ceramic-on-ceramic; PE = polyethylene.