Execution:
- Patient is sitting on a chair or bench with back support, while the examiner stands on the injured side
- The patient’s shoulder is supported on the examiner’s hand in 90° of abduction and with the elbow flexed to 90°
- The examiner then applies an axial force through the humerus with their body and applies a downward and posteriorly directed force distal to the deltoid tuberosity with the free hand
- The patient’s arm is elevated diagonally upwards (shoulder brought into flexion and horizontal adduction) while the axial pressure and downward and posterior pressure is maintained
Positive Outcome: Patient experiences sudden onset of posterior shoulder pain and a click in the shoulder
| Study | Reliability | Sn | Sp | LR+ |
LR- |
| Kim et al. (2005) |
Inter к= 0.91 |
80 | 94 | 13.33 |
0.21 |
| Cadogan et al. (2011) |
PABAK=0.70 |
NA | NA | NA |
NA |
| Morey et al. (2018) |
NA |
75 | 96.4 | 20.83 |
0.26 |
| Comment: Obviously this study is highly biased with the inventor of the test as the leading author, but shows good adjusted reliability | |||||
