Table 6. Duration of hip symptoms prior to THA and postoperative hip pain, hip abductor strength, leg length discrepancy, and walking with cane or not, according to postoperative limping. Values are count (%).
| Factor | All | Postoperative limping | p-value | |
|---|---|---|---|---|
| none to slight n = 1,130 | Moderate to severe n = 127 | |||
| At baseline | ||||
| Duration of hip symptoms | 0.4 | |||
| < 1 year | 224 | 199 (19) | 25 (21) | |
| 1–2 years | 429 | 394 (37) | 35 (29) | |
| 2–5 years | 343 | 303 (28) | 40 (33) | |
| > 5 years | 193 | 173 (16) | 20 (17) | |
| Missing | 68 | 61 | 7 | |
| 5 years after surgery | ||||
| Hip pain | < 0.001 | |||
| None/occasional | 838 | 778 (69) | 60 (47) | |
| Mild/moderate | 337 | 302 (27) | 35 (28) | |
| Severe/extreme | 82 | 50 (4) | 32 (25) | |
| Missing | 0 | 0 | 0 | |
| Hip abductor strength | < 0.001 | |||
| ≥ M4–M5 | 988 | 906 (96) | 82 (85) | |
| < M4 | 48 | 34 (7) | 14 (15) | |
| Missing | 221 | 190 | 31 | |
| Leg length discrepancy | 0.009 | |||
| None | 785 | 720 (80) | 65 (68) | |
| > 1 cm or < –1 cm | 211 | 181 (20) | 30 (32) | |
| Missing | 261 | 229 | 32 | |
| Walking with cane | < 0.001 | |||
| No | 1,158 | 1,059 (94) | 99 (78) | |
| Yes | 97 | 69 (6) | 28 (22) | |
| Missing | 2 | 2 | 0 | |