Table II.
Patient-reported outcome measures (PROMs) and improvement from preoperative to 24 months. Absolute numbers indicate the number of patients who completed the respective PROMs.
| PROM | Preoperative | 6 wks | 6 mths | 12 mths | 24 mths | Improvement |
|---|---|---|---|---|---|---|
| OKS | ||||||
| Mean (SD) | 24.3 (8.9) | 28 (6.9) | 38.2 (8.1) | 39.9 (7.9) | 40.7 (7.1) | 16.4 (9) |
| N | 30 | 30 | 30 | 30 | 30 | 30 |
| EQ-5D-5L Index | ||||||
| Mean (SD) | 0.665 (0.153) | 0.748 (0.081) | 0.813 (0.114) | 0.851 (0.121) | 0.84 (0.152) | 0.175 (0.151) |
| N | 30 | 30 | 30 | 30 | 30 | 30 |
| UCLA | ||||||
| Mean (SD) | 5.2 (2.3) | N/A | 5.9 (1.7) | 6.5 (1.6) | 6.2 (2.0) | 1.0 (2.3) |
| N | 30 | N/A | 30 | 30 | 30 | 30 |
| Mean (SD) | 51.3 (13) | 58.3 (10.3) | 71.2 (14.1) | 74.6 (17.4) | 76.7 (15.3) | 25.4 (16.0) |
| N | 30 | 30 | 30 | 30 | 30 | 30 |
| FJS | ||||||
| Mean (SD) | N/A | 17.8 (18.8) | 53 (28.6) | 56.1 (30.6) | 62.1 (29.0) | 44.3* (28.6) |
| N | N/A | 30 | 30 | 30 | 30 | 30 |
| Satisfaction VAS | ||||||
| Mean (SD) | 29.9 (17.9) | N/A | 83.8 (18.5) | 84.1 (19.6) | 89.4 (8.6) | 59.5 (18.5) |
| N | 29 | N/A | 30 | 30 | 30 | 29 |
Data include one patient who was revised for stiffness at 16 months.
*
FJS improvement from 6 weeks to 24 months.
EQ-5D-5L, EuroQol five-dimension five-level questionnaire; FJS, Forgotten Joint Score; KOOS JR, Knee Injury and Osteoarthritis Outcome Score for Joint Replacement; N/A, not applicable; OKS, Oxford Knee Score; UCLA, University of California, Los Angeles activity scale; VAS, visual analogue scale.