Lavage or debridement v placebo for osteoarthritis of the knee†
| Mean score | ||||
|---|---|---|---|---|
| Outcome | Lavage | Debridement | Placebo | Mean score difference (95% CI) |
| †KSPS = Knee-Specific Pain Scale (scores 0–100 [most severe]). All differences are statistically nonsignificant. | ||||
| Pain at 1 year (KSPS) | 54.8 | 48.9 | 5.9 (−2.0 to 13.8) | |
| 51.7 | 48.9 | 2.8 (−5.9 to 11.5) | ||
| Pain at 2 years (KSPS) | 53.7 | 51.6 | 2.1 (−6.9 to 11.1) | |
| 51.4 | 51.6 | 0.2 (−8.8 to 9.2) | ||