Table 1.
Comparison of cup positioning accuracy between different approaches, as demonstrated in previous studies
| Study; approach | No. of hips | Optimal range of inclination angle | Optimal range of anteversion | Components within both ranges, % |
|---|---|---|---|---|
| Callanan et al.25 | 1952 | 30°–45° | 5°–25° | |
|
| ||||
| Direct lateral | 50 | 32.0 | ||
|
| ||||
| Posterolateral | 1170 | 57.3 | ||
|
| ||||
| Anterolateral | 560 | 37.0 | ||
|
| ||||
| Barrack et al.26 | 1549 | 30°–55° | 5°–35° | |
|
| ||||
| Posterolateral | 898 | 88.0 | ||
|
| ||||
| Anterolateral | 154 | 79.0 | ||
|
| ||||
| Present study | 1010 | 30°–50° | 5°–25° | 43.6 |
| Modified Hardinge | ||||