The Cluster of van der Wurff consists of the following 5 tests: Distraction Test, Compression Test, Thigh Thrust Test, Patrick Sign, Gaenslen Test.
Positive Outcome: The diagnosis of a painful SIJ is given for 3 or more positive tests out of 5
The SIJ as source of nociception is rejected if less than 3 tests are positive
| Study | Reliability | Sn | Sp | LR+ | LR- |
| Van der Wurff et al. (2006) for 3/5 positive tests | NA | 85 | 79 | 4.02 | 0.19 |
| Comment: The Cluster of Laslett was slightly stricter in their criterias than the Cluster of van der Wurff (80% pain reduction with a joint block vs. 50%), which is why we prefer the Cluster of Laslett. | |||||
