Difference in self-reported pain, stiffness and function at baseline and at the 4-, 10-, 16- and 29-month follow-up between the exercise therapy group and the control group, and between the patients who went through THR surgery and the patients who did not*
| Baseline | 4 months | 10 months | 16 months | 29 months | |
|---|---|---|---|---|---|
| Mean difference (95% CI) between the exercise therapy group and the control group | |||||
| WOMAC† | |||||
| Pain | −1.3 (−8.0 to 5.3) | −4.7 (−11.4 to 1.9) | −6.6 (−13.9 to 0.8) | −6.5 (−14.3 to 1.3) | −5.9 (−14.2 to 2.4) |
| Stiffness | 0.5 (−8.0 to 9.1) | −3.5 (−12.0 to 5.0) | −6.3 (−15.8 to 3.2) | −12.5 (−22.5 to −2.5) | −3.9 (−14.6 to 6.7) |
| Physical function | −2.5 (−8.7 to 3.7) | −4.6 (−10.7 to 1.6) | −8.4 (−15.2 to −1.6) | −9.2 (−16.5 to −1.9) | −6.4 (−14.1 to −1.3) |
| Mean difference (95% CI) between the patients who underwent THR‡ (n=53) and the patients who did not (n=56) | |||||
| WOMAC† | |||||
| Pain | 0.1 (−6.4 to 6.7) | 5.6 (−0.9 to 12.1) | 11.9 (4.7 to 19.1) | 9.3 (1.5 to 17.1) | 13.2 (4.6 to 21.8) |
| Stiffness | 4.1 (−4.3 to 12.5) | 9.5 (1.1 to 17.8) | 10.6 (1.3 to 19.9) | 15.2 (5.2 to 25.2) | 12.7 (1.7 to 23.8) |
| Physical function | 5.0 (−0.9 to 11.0) | 8.9 (2.9 to 14.8) | 11.9 (5.3 to 18.4) | 13.3 (6.2 to 20.4) | 15.1 (7.3 to 23.0) |
*Plus-minus values are mean±SD.
†The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) comprise three subscales (pain, stiffness and physical function) composed of 24 questions. Scores range from 0 to 100, with a higher score indicating more severe disease.19
‡Results for patients who went through THR are preoperative results up until time of surgery.
THR, total hip replacement.