Execution:
- Patient is standing
- The patient’s shoulder is brought into 90° of flexion, 10° of horizontal adduction and maximal internal rotation
- The patient resists downward pressure from the examiner
- The same procedure is repeated with the shoulder in 90° of flexion, 10° of horizontal adduction and maximal external rotation
Positive Outcome: Pain on top of the shoulder in the area of the AC joint provoked in the first testing position is reduced in the second testing position
| Study | Reliability | Sn | Sp | LR+ | LR- |
| Krill et al. (2018) | NA | 14 | 92 | 1.70 | 0.94 |
| Cadogan et al. (2011) | PABAK = 0.75 | NA | NA | NA | NA |
| Cadogan et al. (2013) | NA | 14 | 92 | 1.73 | 0.94 |
| Comment: Although the ACT seems to have a high reliabilty according prevalence and bias adjusted kappa (PABAK), its validity is low | |||||
