The subject lies in the prone position with both knees flexed to a right angle. The examiner encircles both heels and performs a bilateral external rotation. The range of movement is assessed by the twisted position of the feet. This test may be decisive in comparing the range of external rotation.
Common pathological situations:
- Pain at the inner side of the knee may indicate a lesion of the medial collateral ligament or the medial coronary ligament.
- Pain at the lateral side suggests a lesion of the popliteus tendon.
- Limitation of the movement is typical for ligamentous adhesions of the medial
- Increased range of movement in the prone position results from a laxity of the ligamentous structures of the medial compartment and of the anterior cruciate ligament.
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