| Internal rotation at minimum 2 years | |||
| Study | Anatomical reach at back | RTSA: N (out of 41) | HA: N (out of 43) |
| Jonsson 2020 | None | 0 | 2 |
| Buttocks | 9 | 5 | |
| Sacroiliac joint | 8 | 6 | |
| Waist level | 14 | 15 | |
| 12th thoracic vertebra | 8 | 13 | |
| Interscapular level | 2 | 2 | |
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