Understanding the Thessaly Test Assessment
To assess for **meniscal tears** by dynamically loading the meniscus in a weight-bearing, rotational manner.
Watch How It's Done
How do I start?
Patient is standing on the affected leg, holding the examiner's hands for balance. The knee is flexed to **5°**.
What happens?
The patient rotates the body **internally and externally three times** on the loaded leg. The test is repeated with the knee flexed to **20°**.
In Plain English
What Does a Positive Result Mean?
The reproduction of **joint line pain** or a definite sense of **locking or catching** in the joint.
Helpful Tip:
The 20° flexion position is generally more sensitive for posterior meniscal lesions. This test is done cautiously due to the weight-bearing nature.
Safety First
This guide is to help you understand what happens in a clinic. Do not try to diagnose yourself. If you have severe pain, swelling, or cannot put weight on your leg, please visit an urgent care center or your doctor immediately.
Other Knee Tests
Pivot Shift Test
To dynamically assess for **anterolateral rotatory instability** of the knee, which is highly indicative of a **complete ACL tear**.
Posterior Drawer Test of the Knee
To assess the integrity of the **Posterior Cruciate Ligament (PCL)**.
Posterior Sag Sign (Gravity Drawer Test)
To detect a rupture of the **Posterior Cruciate Ligament (PCL)** by observing the effect of gravity.
Slocum Test (Anterolateral Rotatory Instability)
To assess for **anterolateral rotatory instability** and the function of the **Anterolateral Ligament** (a dynamic variant of the Anterior Drawer).