Table 1 Obligate posterior glenohumeral translation (mm) during external rotation (ER) and obligate anterior glenohumeral translation (mm) during internal rotation (IR). Abbreviations: IQR = interquartile range; SD = standard deviation
| Â | Â | Â | Posterior Translation (mm) during ER | Anterior Translation (mm) during IR |
|---|---|---|---|---|
0° | Native | mean ± SD | 3.0 ± 3.9 | 5.6 ± 4.9 |
median | 1.8 | 4.3 | ||
IQR | 1.5 | 5.4 | ||
Elliptical | mean ± SD | 1.7 ± 1.6 | 5.5 ± 6.0 | |
median | 1.4 | 2.4 | ||
IQR | 0.8 | 8.6 | ||
Sphere | mean ± SD | 1.3 ± 0.3 | 3.3 ± 3.5 | |
median | 1.3 | 1.8 | ||
IQR | 0.5 | 4.2 | ||
30° | Native | mean ± SD | 3.4 ± 3.1 | 4.8 ± 4.7 |
median | 2.6 | 3.5 | ||
IQR | 4.9 | 8.9 | ||
Elliptical | mean ± SD | 1.4 ± 0.9 | 4.4 ± 3.9 | |
median | 1.3 | 2.9 | ||
IQR | 0.6 | 6.9 | ||
Sphere | mean ± SD | 1.4 ± 0.8 | 4.4 ± 3.8 | |
median | 1.5 | 3.1 | ||
IQR | 1.3 | 6.1 | ||
45° | Native | mean ± SD | 4.3 ± 3.2 | 4.3 ± 5.2 |
median | 4.5 | 3.9 | ||
IQR | 2.1 | 4.0 | ||
Elliptical | mean ± SD | 1.1 ± 0.8 | 5.2 ± 4.5 | |
median | 0.7 | 3.8 | ||
IQR | 1.4 | 7.4 | ||
Sphere | mean ± SD | 1.3 ± 0.9 | 5.1 ± 4.9 | |
median | 1.2 | 3.4 | ||
IQR | 1.8 | 9.6 | ||
60° | Native | mean ± SD | 5.5 ± 2.6 | 5.8 ± 6.0 |
median | 6.4 | 3.4 | ||
IQR | 1.6 | 11.0 | ||
Elliptical | mean ± SD | 1.2 ± 0.8 | 6.6 ± 5.3 | |
median | 1.3 | 4.6 | ||
IQR | 1.3 | 9.1 | ||
Sphere | mean ± SD | 1.7 ± 0.9 | 6.8 ± 6.0 | |
median | 1.6 | 4.9 | ||
IQR | 1.2 | 11.2 |