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Mean absolute error for impingement-free ROM calculated with the PSSZ algorithm
| Parameter | Number of tests | Mean absolute error in °, mean ± SD |
| All axes | 1680 | 1.4 ± 2.3 |
| Flexion and extension | 360 | 1.2 ± 1.8 |
| Abduction and adduction | 480 | 1.1 ± 1.9 |
| External and internal rotation | 480 | 1.9 ± 2.8 |
| Compound movements | 360 | 1.3 ± 2.2 |
PSSZ = patient-specific safe zone.
