Mean differences in pain and muscle strength in the exercise group by level of compliance
| Total exercise time missed | ||||
|---|---|---|---|---|
| <2 weeks | <6 weeks | <3 months | >3 months | |
| Total pain score | −1.65 | −1.50 | 1.75 | −1.85 |
| VAS walking | −9.26 | −8.07 | 1.87 | −0.62 |
| VAS stairs | −15.05 | −12.07 | 6.63 | 2.48 |
| Right quadriceps strength | 2.36 | 1.85 | −2.09 | −1.90 |