Table 1 Patient descriptive statistics at baseline
Group A Standard THA (n=27) | Group B OPS THA (n=27) | All (n=54) | |
|---|---|---|---|
Age at randomization (years, mean, SD) | 57.3 (9.8) | 58.8 (7.4) | 58.1 (8.6) |
Sex:Female (n, % of valid group) | 12 (44.4) | 18 (66.7) | 30 (55.6) |
Ethnicity: White British (n, %) | 24 (88.9) | 23 (85.2) | 47 (87) |
BMI (kg/m2, mean, SD) | 29.7 (5.0) | 30.3 (4.8) | 30.0 (4.9) |
Study Hip: Left (n, % of valid group) | 9 (33.3) | 10 (37.0) | 19 (35.2) |
Previous spinal surgery: Yes (n, % of valid group) | * | * | 3 (5.7) |
Known spinal deformity: Yes (n, % of valid group) | 4 (15.4) | 4 (14.8) | 8 (15.1) |
Neurological disorder: Yes (n, % of valid group) | 2 (7.7) | 2 (7.4) | 4 (7.5) |
Hip pathology: Osteoarthritis: Yes (n, % of valid group) | * | * | 53 (98.1) |
Length of legs: (n, % of valid group) | |||
About the same | 14 (51.9) | 15 (55.6) | 29 (53.7) |
Left leg longer | 4 (14.8) | 8 (29.6) | 12 (22.2) |
Right leg longer | 4 (14.8) | 2 (7.4) | 6 (11.1) |
Unsure | 5 (18.5) | 2 (7.4) | 7 (13.0) |
Walking aids: None (n, % of valid group) | 17 (63.0) | 19 (70.4) | 36 (66.7) |