Table 2.
Result of the functional score analysis based on inlier/outlier definition
| Postoperative scores | Within safe zone (n = 37) |
Outliers (n = 23) |
p value |
|---|---|---|---|
| HHS | 89 ± 11 | 89 ± 11 | 0.9 |
| Pain HOOS | 78 ± 16 | 76 ± 18 | 0.9 |
| Symptom HOOS | 77 ± 12 | 74 ± 17 | 0.4 |
| ADL HOOS | 78 ± 21 | 77 ± 18 | 0.9 |
| Sport HOOS | 73 ± 17 | 69 ± 22 | 0.5 |
| QOL HOOS | 76 ± 16 | 74 ± 17 | 0.7 |
| SF-12 physical | 74 ± 9 | 71 ± 15 | 0.4 |
| SF-12 mental | 73 ± 12 | 70 ± 13 | 0.6 |
Values are mean ± SD; CAS = computer-assisted surgery group; Within safe zone = cup orientation abduction angle of 40° ± 10° and an anteversion angle of 15° ± 10°; Outliers = cup orientation outside of the Lewinnek safe zone; HHS = Harris hip score; HOOS = Hip injury and Osteoarthritis Outcome Score; ADL = activities of daily living; QOL = quality of life.