Thessaly Test

thessaly test

The Thessaly test is used to assess the integrity of the medial and lateral meniscus, specifically testing for meniscal tears. 

How to Perform Thessaly Test

Position of Patient: The patient should stand tall on one leg while holding the examiner’s hand for support.

Performance: The examiner instructs the patient to rotate the body and leg internally and externally 3 times with the knee bent at 5 degrees and then at 20 degrees. It’s recommended to first perform the test on the unaffected side so the patient can properly perform movement as a practice run before testing the affected knee. 

How to Interpret Thessaly Test

Positive Finding: A positive test occurs when pain or clicking occurs at the joint line. A locking or catching sensation may also suggest a meniscal injury.

Test Accuracy / Reliability / Evidence:

Sensitivity: 0.66
Specificity: 0.,96
+LR: 16.5
-LR: 0.35
Source: Karachalios T, Hantes M, Zibis AH, et al: Diagnostic accuracy of a new clinical test (the Thessaly test) for early detection of meniscal tears. J Bone Joint Surg Am 2005; 87: pp. 955-962

Next Special Test: Apley Compression Test