Execution:
- Patient is prone lying position and the examiner is standing on the affected side
- The examiner places the base of their hand (fingers pointing in cranial direction) on the spinous process S2
- Then the examiner applies 3-6 higher velocity thrusts with gradually increasing pressure in vertical direction
Positive Outcome: Patient’s familiar pain (usually in the buttock, lower lumbar spine, posterolateral thigh and groin) is reproduced
| Study | Reliability | Sn | Sp | LR+ | LR- |
| Laslett et al. (2005) | NA | 63 | 75 | 2.50 | 0.5 |
| Schneider et al. (2020) | NA | 50 | 56 | 1.14 | 0.89 |
| Comment: Not a very good stand-alone test, but proven useful in the Cluster of Laslett (see below). | |||||
