Table 2.
Descriptive statistics for preoperative and postoperative WOMAC pain scores and VAS for acute postoperative pain on‐movement and at resta
| THR | TKR | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Measure | No. | Mean ± SD | 25 | 50 | 75 | No. | Mean ± SD | 25 | 50 | 75 |
| Preoperative WOMAC pain | 321 | 42.48 ± 18.51 | 30.0 | 40.0 | 55.0 | 316 | 42.47 ± 16.70 | 30.0 | 45.0 | 55.0 |
| On movement (VAS) | ||||||||||
| Day 1 | 301 | 5.78 ± 2.32 | 4.0 | 5.7 | 7.7 | 279 | 6.21 ± 2.37 | 5.0 | 6.3 | 8.0 |
| Day 2 | 295 | 4.59 ± 2.52 | 2.3 | 4.5 | 6.7 | 284 | 5.89 ± 2.38 | 4.2 | 6.0 | 7.7 |
| Day 3 | 271 | 3.90 ± 2.38 | 2.0 | 3.3 | 6.0 | 260 | 4.70 ± 2.48 | 2.7 | 5.0 | 6.3 |
| 3‐day average | 305 | 4.03 ± 1.79 | 2.7 | 3.9 | 5.2 | 290 | 4.94 ± 2.01 | 3.3 | 5.1 | 6.2 |
| At rest (VAS) | ||||||||||
| Day 1 | 301 | 3.15 ± 2.00 | 1.7 | 2.7 | 4.3 | 280 | 4.39 ± 2.28 | 2.7 | 4.3 | 6.0 |
| Day 2 | 296 | 2.40 ± 1.85 | 1.0 | 1.8 | 3.4 | 284 | 3.98 ± 2.36 | 2.0 | 4.0 | 5.7 |
| Day 3 | 271 | 2.07 ± 1.71 | 1.0 | 1.3 | 2.7 | 260 | 3.04 ± 2.12 | 1.0 | 2.7 | 4.3 |
| 3‐day average | 299 | 2.72 ± 1.73 | 1.3 | 2.3 | 3.8 | 288 | 3.88 ± 2.10 | 2.1 | 3.7 | 5.2 |
| Postoperative WOMAC pain | 283 | 88.99 ± 16.85 | 85.0 | 95.0 | 100.0 | 277 | 79.77 ± 21.22 | 65.0 | 85.0 | 100.0 |
a
WOMAC = Western Ontario and McMaster Universities Osteoarthritis Index; VAS = visual analog scale; THR = total hip replacement; TKR = total knee replacement.