Table 2.
Preoperative and postoperative comparisons between the group with arthrofibrosis and the group without arthrofibrosis (control) on patient-reported outcomes, knee scores, and ROM measures
| Dependent variable | Preoperative | Postoperative | ||||||
|---|---|---|---|---|---|---|---|---|
| Arthrofibrosis, mean (SD) | Control, mean (SD) | p value | 95% CI | Arthrofibrosis, mean (SD) | Control, mean (SD) | p value | 95% CI | |
| QWB-7 total | 0.522 (0.05) | 0.530 (0.06) | 0.4 | −0.02 to 0.01 | 0.587 (0.10) | 0.609 (0.13) | 0.3 | −0.06 to 0.02 |
| KS knee score | 42.59 (22.9) | 43.27 (23.7) | 0.8 | −9.2 to 7.8 | 81.18 (22.9) | 86.58 (22.7) | 0.2 | −14.0 to 3.2 |
| KS function score | 26.84 (20.5) | 37.06 (19.3) | 0.006* | −17.4 to −3.0 | 51.30 (22.1) | 59.76 (21.4) | 0.04 | −16.6 to −0.2 |
| WOMAC stiffness | 3.96 (2.3) | 3.61 (2.2) | 0.4 | −0.4 to 1.1 | 1.23 (2.2) | 0.56 (1.2) | 0.04 | 0.01–1.3 |
| WOMAC total | 61.16 (18.2) | 57.06 (15.8) | 0.19 | −2.1 to 10.3 | 17.00 (26.2) | 7.22 (13.6) | 0.01 | 2.0–17.4 |
| Knee active flexion | 102.39 (19.1) | 102.44 (21.2) | 0.9 | −7.3 to 7.2 | 96.71 (17.3) | 104.19 (16.1) | 0.018 | −13.6 to −1.2 |
| KS ROM | 103.07 (18.7) | 104.92 (22.0) | 0.6 | −9.2 to 5.5 | 101.63 (21.5) | 109.76 (17.0) | 0.026 | −15.2 to −0.9 |
* p value < 0.01 independent t-tests; CI = confidence interval; QWB-7 = Quality of Well-Being Index; KS = The Knee Society.