Testing For:
The integrity of the structures that prevent lateral instability at the knee (lateral collateral ligament, joint capsule, cruciate ligaments).
Procedure:
- Patient is supine with the affected knee in full extension.
- Therapist stabilizes the affected leg in slight external rotation with one hand on the lateral malleolus.
- Therapist places their other hand on the medial aspect of the knee.
- Therapist applies a laterally directed (a varus) stress on the medial knee.
- Flex their knee to 30 degrees and apply the same pressure on the lateral side to isolate the lateral collateral ligament
Positive Sign:
Presence of pain and hypermobility at the lateral aspect of the knee
Bryson Ingram R.M.T. 