Table 4.
Mean KOOS (0–100, worst to best scale) in patients (n=68) prior to primary TKR, and 1.7 years after the surgery
| KOOS subscales | Mean score (SD) |
p Value | GPE score | ‘Somewhat better’, ‘better’ or ‘much better’, n=54 |
‘Much worse’, ‘worse’, ‘somewhat worse’ or ‘no change’, n=14 |
|||
|---|---|---|---|---|---|---|---|---|
| Before surgery | At follow-up | Spearman's r | SES | SRM | SES | SRM | ||
| Pain | 35.7 (17.3) | 78.7 (17.4) | <0.001 | 0.58 | 3.07 | 2.37 | 1.37 | 0.96 |
| Symptoms | 35.3 (22.6) | 76.3 (17.8) | <0.001 | 0.56 | 2.51 | 2.20 | 0.50 | 0.68 |
| ADL | 33.0 (17.1) | 78.1 (16.0) | <0.001 | 0.70 | 3.50 | 3.05 | 1.63 | 1.29 |
| Sports/Recreation | 7.2 (13.6) | 24.6 (23.5) | <0.001 | 0.62 | 1.55 | 0.94 | 0.04 | 0.04 |
| QOL | 16.8 (13.3) | 53.7 (21.3) | <0.001 | 0.61 | 3.30 | 1.91 | 1.31 | 0.81 |
Responsiveness given as Spearman's correlations of the five KOOS subscales and GPE score. SES and SRM in patients who scored ‘somewhat better’, ‘better’ and ‘much better’ (n=54) and in those who scored ‘much worse’, ‘worse’, ‘somewhat worse’ and ‘no change’ (n=14).
ADL, activities of daily living; GPE, global perceived effect; KOOS, Knee injury and Osteoarthritis Outcome Score; QOL, quality of life; SES, standardised effect size; SRM, standardised response mean; TKR, total knee replacement.