Table 2.
KOOS, WOMAC and SF-36 scores pre-operative and at the post-operative follow-up moments for both groups
| High tibial osteotomy | Knee joint distraction | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Score (±SD) | BL | 3 m | 6 m | 12 m | BL → 1Y | BL | 3 m | 6 m | 12 m | BL → 1Y | |
| KOOS (0–100) |
Pain | 46 ± 18 | 64 ± 17* | 72 ± 19* | 77 ± 19* | 32 ± 19 | 47 ± 18 | 61 ± 22* | 71 ± 21* | 72 ± 18* | 25 ± 19 |
| Symptom | 54 ± 15 | 63 ± 14* | 71 ± 15* | 73 ± 16* | 19 ± 18 | 56 ± 19 | 54 ± 20 | 63 ± 20 | 68 ± 19* | 13 ± 17 | |
| ADL | 54 ± 17 | 68 ± 14* | 76 ± 18* | 82 ± 17* | 28 ± 17 | 55 ± 21 | 65 ± 22 | 75 ± 19* | 78 ± 19* | 24 ± 17 | |
| Sport/rec | 23 ± 19 | 31 ± 22* | 47 ± 25* | 53 ± 31* | 29 ± 24 | 29 ± 19 | 36 ± 30 | 44 ± 25* | 49 ± 27* | 21 ± 24 | |
| QOL | 27 ± 15 | 37 ± 17* | 47 ± 21* | 55 ± 25* | 28 ± 19# | 32 ± 16 | 30 ± 17 | 43 ± 21* | 44 ± 20* | 12 ± 17 | |
| Total | 41 ± 13 | 53 ± 14* | 63 ± 17* | 68 ± 19* | 27 ± 16 | 43 ± 17 | 50 ± 18 | 60 ± 18* | 62 ± 18* | 19 ± 16 | |
| WOMAC (0–100) |
Pain | 50 ± 21 | 68 ± 17* | 76 ± 19* | 81 ± 18* | 31 ± 19 | 54 ± 21 | 69 ± 23* | 76 ± 20* | 76 ± 15* | 23 ± 21 |
| Stiffness | 46 ± 21 | 58 ± 21* | 64 ± 23* | 69 ± 19* | 22 ± 21# | 50 ± 20 | 56 ± 21 | 58 ± 19 | 60 ± 18 | 10 ± 24 | |
| Function | 54 ± 17 | 68 ± 14* | 76 ± 18* | 82 ± 17* | 28 ± 17 | 55 ± 21 | 65 ± 22 | 75 ± 19* | 78 ± 19* | 24 ± 17 | |
| Total | 52 ± 17 | 67 ± 14* | 75 ± 17* | 81 ± 16* | 29 ± 17 | 54 ± 20 | 65 ± 20 | 74 ± 18* | 76 ± 17* | 22 ± 16 | |
| ICOAP (100–0) |
Constant | 48 ± 21 | 34 ± 24* | 29 ± 27* | 19 ± 24* | −29 ± 24 | 50 ± 20 | 35 ± 31 | 24 ± 25* | 23 ± 20* | −27 ± 21 |
| Intermittent | 54 ± 22 | 33 ± 22* | 35 ± 26* | 23 ± 24* | −31 ± 31 | 50 ± 20 | 38 ± 29 | 34 ± 24* | 34 ± 22* | −17 ± 20 | |
| Combined | 51 ± 20 | 34 ± 21* | 32 ± 26* | 21 ± 23* | −30 ± 26 | 50 ± 20 | 36 ± 29 | 30 ± 24* | 29 ± 19* | −22 ± 18 | |
| VAS (0–100) |
Pain | 65 ± 21 | 47 ± 26* | 37 ± 24* | 27 ± 23* | −38 ± 26# | 55 ± 24 | 46 ± 29 | 34 ± 23* | 36 ± 26* | −19 ± 26 |
| EQ-5D (0–1) |
Index score | 0.64 ± .2 | 0.68 ± .2# | 0.68 ± .3 | 0.79 ± .3* | 0.15 ± .3 | 0.63 ± .2 | 0.52 ± .3 | 0.69 ± .2 | 0.77 ± .1* | 0.14 ± .3 |
| SF-36 | PCS | 36 ± 8 | 42 ± 10* | 46 ± 10* | 10 ± 9# | 37 ± 7 | 40 ± 10 | 42 ± 10* | 5 ± 8 | ||
| MCS | 55 ± 8 | 53 ± 11 | 54 ± 10 | −1 ± 8 | 56 ± 8 | 56 ± 8 | 54 ± 9 | −1 ± 9 | |||
| Flexion (°) |
Knee | 132 ± 8 | 127 ± 10 | 128 ± 8 | 128 ± 8 | 130 ± 7 | 115 ± 17 | 128 ± 9 | 132 ± 8 | ||
* p < 0.05 relative to the preoperative score
# p < 0.05 difference between HTO and knee joint distraction