Table 1 .
Patient demographics
| No. of patients (%) (n = 148) | |
|---|---|
| Sex | |
| Male | 55 (37.2) |
| Female | 93 (62.8) |
| Age at time of first side | |
| <40 | 4 (2.7) |
| 40–60 | 46 (31.1) |
| 61–80 | 92 (62.2) |
| >80 | 6 (4.1) |
| First-side laterality | |
| Right | 74 (50.0) |
| Left | 74 (50/0) |
| BMI | |
| <25 | 23 (15.5) |
| 25–30 | 40 (27.0) |
| 31–40 | 68 (46.0) |
| >40 | 13 (8.8) |
| N/A | 4 (2.7) |
| Reasons for surgery | |
| OA | 143 (96.6) |
| Perthes | 2 (1.4) |
| Adult dysplasia | 3 (2.0) |
| ASA grade | |
| 1 | 30 (20.3) |
| 2 | 42 (28.4) |
| 3 | 64 (43.2) |
| 4 | 12 (8.1) |
ASA = American Society of Anaesthesiologists; BMI = body mass index; N/A = not available; OA = osteoarthritis