What indicates a positive result in the Cluster of Laslett?

• A. Pain in 1/4 tests of the cluster
• B. Pain in all tests of the cluster
• C. Pain in 2/4 or 3/5 tests of the cluster
• D. No pain present in any tests

Answer: (C)

A positive result in the Cluster of Laslett suggests the presence of sacroiliac joint dysfunction. The cluster includes specific tests that are designed to provoke pain if there is an underlying issue with the sacroiliac joint. The criteria for a positive result typically involves the presence of pain in at least two out of the four tests. This indicates a higher likelihood that the patient's pain is related to sacroiliac joint dysfunction, making option C the correct choice.

If pain is elicited in fewer tests, such as only one, it does not meet the threshold to strongly suggest sacroiliac involvement. Similarly, if pain is experienced in all tests, while that may indicate serious dysfunction, it is not the specific criterion set forth by the Cluster of Laslett. No pain in any of the tests suggests there is likely no sacroiliac issue, again not supporting a positive result. Thus, the standard interpretation revolves around having pain in two to three of the designated tests to confirm a positive finding in this clinical assessment.