Table III.
Patient-reported outcome measures.
| PROM | Preop median (IQR) | 3-mth median (IQR) | 1-yr median (IQR) | 2-yr median (IQR) | Ceiling effect %* | p-value† |
|---|---|---|---|---|---|---|
| KOOS | ||||||
| Pain | 44 (33 to 56) | 72 (64 to 97) | 94 (74 to 100) | 94 (816 to 100) | 38 | < 0.001 |
| Symptoms | 50 (46 to 64) | 68 (57 to 84) | 89 (6 to 93) | 86 (75 to 93) | 3 | < 0.001 |
| ADL | 52 (34 to 59) | 84 (64 to 96) | 94 (82 to 100) | 94 (88 to 100) | 8 | < 0.001 |
| Sport&Rec | 10 (5 to 26) | 55 (36 to 75) | 70 (55 to 82) | 69 (48 to 88) | 3 | < 0.001 |
| QoL | 189 (13 to 31) | 63 (47 to 78) | 88 (63 to 97) | 81 (59 to 100) | 38 | < 0.001 |
| FJS-12 | N/A | 60 (27 to 83) | N/A | 79 (39 to 95) | 10% | 0.002 |
*
Ceiling effect at two years.
†
Wilcoxon signed-rank test comparing change from preoperative to two years.
ADL, activities of daily living; FJS, Forgotten Joint Score; IQR, interquartile range; KOOS, Knee injury and Osteoarthritis Outcome Score; N/A, not applicable.