Table 2.
Length of stay, surgical time, and pain and functional outcomes in patients who underwent the direct anterior or posterior approach for total hip arthroplasty
| Variable | Approach | p value | |
|---|---|---|---|
| PA n = 27 |
DAA n = 28 |
||
| Length of stay, d, mean ± SD | 3.5 ± 2.2 | 3.8 ± 1.8 | 0.53 |
| Surgical time, min, mean ± SD | 45.7 ± 17.9 | 59.9 ± 12.7 | 0.002 |
| VAS score, mean ± SD | |||
| Preoperative | 6.9 ± 2.1 | 5.0 ± 2.4 | 0.029 |
| Postoperative | |||
| 2 wk | 2.1 ± 2.0 | 2.0 ± 2.0 | 0.79 |
| 4 wk | 1.6 ± 1.9 | 1.4 ± 2.0 | 0.63 |
| 3 mo | 1.1 ± 1.9 | 1.0 ± 1.7 | 0.66 |
| 6 mo | 0.4 ± 1.0 | 0.4 ± 0.8 | 0.61 |
| 1 yr | 0.6 ± 1.2 | 0.3 ± 0.5 | 0.38 |
| 2 yr | 1.0 ± 1.9 | 0.5 ± 0.8 | 1.00 |
| HHS score, mean ± SD | |||
| Preoperative | 48.2 ± 10.1 | 52.1 ± 19.7 | 0.66 |
| Postoperative | |||
| 2 wk | 60.0 ± 15.1 | 66.9 ± 17.1 | 0.12 |
| 4 wk | 68.7 ± 16.8 | 76.7 ± 16.4 | 0.08 |
| 3 mo | 83.3 ± 15.1 | 88.4 ± 11.8 | 0.18 |
| 6 mo | 90.3 ± 12.3 | 90.1 ± 11.3 | 1.00 |
| 1 yr | 91.4 ± 13.0 | 94.4 ± 8.0 | 0.72 |
| 2 yr | 88.7 ± 20.0 | 89.4 ± 11.9 | 0.58 |
| 5 yr | 80.0 ± 20.4 | 82.0 ± 19.8 | 0.72 |
DAA = direct anterior approach; HHS = Hip Harris Score; PA = posterior approach; VAS = visual analogue scale; SD = standard deviation.