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Table 1 Mean medial meniscal extrusion (MME) across the six loading phases

From: Sonographic evaluation of the degree of medial meniscal extrusion during Thessaly test in healthy knees

Positions Mean (mm) Standard deviation (mm)
Supine 2.3 0.5
Standing 2.8* 0.8
5° flexion, internal rotation (IR) 2.3 0.9
5° flexion, external rotation (ER) 2.4 0.7
20° flexion, internal rotation (IR) 1.9** 0.8
20° flexion, external rotation (ER) 2.3 0.7
  1. *Maximum amount of extrusion
  2. **Minimum amount of extrusion