Knee Orthopaedic Test: Thessaly Test

orthopaedic tests May 29, 2023

The Thessaly Test is a clinical examination maneuver used to assess meniscal tears in the knee joint. It involves the patient actively rotating their body while standing on one leg, and the examiner applies a controlled rotational force to the knee joint. 


  • Position the patient standing on a flat surface, with feet shoulder-width apart and hands on the hips.
  • Instruct the patient to flex the knee slightly and stand on one leg (the leg being tested) with the other foot slightly off the ground.
  • Provide support to the patient, if needed, to maintain balance during the test.
  • The patient should then rotate their body internally (medially) and externally (laterally) three times, keeping the foot of the tested leg in contact with the ground.
  • Repeat the rotation in the opposite direction (internal and external rotation).
  • Ask the patient to report any pain, discomfort, or clicking sensation during the rotations.
  • Perform the test on the other leg, if indicated.
  • Note any positive findings, such as pain, clicking, or joint locking during the test.



  1. Physical Examination of the Knee: Meniscus Tests. OrthoBullets. Available at: Accessed on April 5, 2023.
  2. Kim W, Lee K. Thessaly Test. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022. Available at: Accessed on April 5, 2023.
  3. Deyle GD, Lonnemann RL. Nonoperative man

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