Table 3 Comparison of findings of portable hip navigation systems in the lateral decubitus position.
Placement error (absolute difference between the intended target and the angle achieved) | Measurement error | ||||
|---|---|---|---|---|---|
Type of navigation | Abduction (°) | Anteversion (°) | Abduction (°) | Anteversion (°) | |
First-generation portable hip navigation | |||||
Tanino21 | Accelerometer | 3.7° ± 3.0° | 6.0° ± 4.5° | ||
Tetsunaga24 | Accelerometer | 4.1° ± 3.7° | 6.8° ± 4.8° | ||
Tanino22 | Accelerometer | 3.7° ± 3.3° | 5.9° ± 3.6° | ||
Kiyohara15 | Accelerometer | 4.3° ± 3.2° | 4.4° ± 2.9° | ||
Kurosaka16 | Accelerometer | 3° ± 2° | 5° ± 4° | ||
Vigdorchik25 | Optical | 4.1° ± 2.7° | 5.3° ± 4.4° | ||
Mei17 | Optical | 5.2° ± 4.0° | 4.8° ± 5.4° | ||
Second-generation portable hip navigation | |||||
Ogawa19 | AR | 1.9° ± 1.3° | 2.8° ± 2.2° | 2.0° ± 1.5° | 2.9° ± 2.0° |
Kurosaka16 | AR | 3° ± 2° | 2° ± 2° | ||
Tanino23 | AR | Median 1° (IQR 0–4.0) | Median 2° (IQR 1.9–3.7) | ||
Ohyama18 | Accelerometer with an infrared camera | Median 2.1° (IQR 1.0–3.7) | Median 2.1° (IQR 0.9–3.1) | ||
INS | |||||
Xu26 | INS | 2.3° ± 2.8° | 2.7° ± 2.5° | ||
This study | INS | 2.8° ± 2.6° | 3.9° ± 2.9° | ||
