Table 3 Contribution of pre- and postoperative pelvic mobility based on ∆ PT = PTstanding − PTsitting defined as stiff (∆ PT < 10°), normal (∆ PT ≥ 10°–30°), and hypermobile (∆ PT ≥ 30°) according to the pre-existing THA group and the matched control group, % represents the percentage contribution; N represents the absolute number of patients
Classification of preoperative and postoperative pelvic mobility | |||
|---|---|---|---|
Pelvic mobility (∆ PT) |  | Pre-existing | Control |
Stiff (%/N) | Preoperative | 25.0 (11) | 75.0 (33) |
Postoperative | 9.1 (4) | 18.2 (8) | |
Normal (%/N) | Preoperative | 63.6 (28) | 22.7 (10) |
Postoperative | 68.2 (30) | 75.0 (33) | |
Hypermobile (%/N) | Preoperative | 11.4 (5) | 2.3 (1) |
Postoperative | 22.7 (10) | 6.8 (3) | |