Table 1 Leg lengthening: baseline patient characteristics after matching
From: Total hip arthroplasty: leg length inequality impairs functional outcomes and patient satisfaction
Baseline characteristics |  | Controls (N = 1434) | Cases (N = 478) |
|---|---|---|---|
Sex | M | 46.7% | 46.7% |
| Â | F | 53.3% | 53.3% |
Age at procedure (years) | Mean (SD) | 67 (9) | 67 (9) |
Weight (kg) | Mean (SD) | 74 (14) | 75 (15) |
Height (cm) | Mean (SD) | 165 (9) | 165 (9) |
Charnley class | A | 54.3% | 47.4% |
| Â | BB | 22.4% | 29.6% |
| Â | B | 21.4% | 21.1% |
| Â | C | 1.9% | 1.9% |
Previous Surgery | Yes | 3.6% | 4.4% |
Clinic Size | small | 5.0% | 5.0% |
| Â | medium | 52.4% | 49.2% |
| Â | large | 42.6% | 45.8% |
Fixation of Components | all cemented | 17.5% | 16.3% |
| Â | all uncemented | 18.0% | 18.8% |
| Â | hybrid | 50.0% | 49.2% |
| Â | reverse hybrid | 14.5% | 15.7% |
Duration of procedure | <90 min | 54.5% | 55.4% |
|  | 90 min > x < 135 min | 38.6% | 37.7% |
|  | >135 min | 6.9% | 6.9% |
Decade of procedure | 1970's | 3.0% | 1.5% |
| Â | 1980's | 50.8% | 50.0% |
| Â | 1990's | 45.3% | 47.7% |
| Â | after 2000 | 0.9% | 0.8% |