Table 3.
Clinical outcomes as mean (CI) HHS, OHS, WOMAC, and EQ-5D over time
| Score/subscore | Preoperatively | 3 months | 6 months | 1 year | 2 years |
|---|---|---|---|---|---|
| HHS | 63 (33 to 93) | 96 (82 to 110) a | 98 (91 to 105) a | 98 (90 to 107) | 99 (92 to 105) a |
| OHS | 37 (22 to 53) | 23 (7 to 39) a | 20 (6 to 34) a | 19 (5 to 33) | 18 (5 to 31) a |
| WOMAC | |||||
| Total | 50 (13 to 86) | 17 (–8 to 41) a | 13 (–13 to 39) a | 12 (–14 to 38) | 10 (–14 to 34) |
| Pain | 10 (2 to 18) | 2 (–3 to 7) a | 2 (–4 to 7) | 2 (–4 to 8) | 1 (–4 to 7) |
| Stiffness | 4 (0 to 8) | 2 (–1 to 5) a | 2 (–1 to 5) a | 1 (–1 to 4) | 1 (–1 to 4) |
| Physical functioning | 36 (10 to 62) | 12 (–6 to 30) a | 9 (–10 to 28) a | 9 (–10 to 27) | 7 (–11 to 25) |
| EQ-5D | |||||
| Index | 69 (42 to 96) | 88 (68 to 107) a | 91 (72 to 110) a | 91 (72 to 110) | 93 (75 to 111) |
| VAS | 67 (26 to 108) | 83 (56 to 109) a | 84 (58 to 110) | 84 (55 to 113) | 87 (58 to 116) a |
aIndicates Wilcoxon signed-rank test p-value < 0.05 compared with the preceding clinical outcome.