Association between corresponding questions in Oxford Knee Score and American Knee Society Scores pre- and postoperatively (Spearman correlation coefficients (95% CI))
| Preoperative n=284 | Postoperative n=226 | |
| Walk question | −0.37 (−0.47 to −0.27) | −0.43 (−0.53 to −0.32) |
| Stairs question | −0.33 (−0.43 to −0.22) | −0.45 (−0.55 to −0.34) |