Orthopedic Exam / Special Tests for Physical Therapy: KNEE
Valgus Stress Test Knee: Knock-Kneed Legs:
Genu valgum is a condition in which the knees angle in and touch one another when the legs are straightened. Individuals with severe valgus deformities are typically unable to touch their feet together while simultaneously straightening the legs.
Valgus alignment shifts the load-bearing axis to the outside, causing increased stress across the lateral compartment of the knee. Valgus alignment is not considered quite as destructive as varus alignment.
http://osteoarthritis.about.com/od/kneeosteoarthritis/a/valgus.htm
PURPOSE:
- Testing for the integrity of the structures that prevent Valgus deformity of the knee (Joint capsule, medial collateral ligament, cruciate ligaments).
Video Demo Instructions, Procedure, Positive Test:
Valgus Test of the Knee:Video Demo (Procedure below)
Valgus Test of the Knee: Procedure:
• Patient is supine
• Place the affected leg in extension and slight external rotation. Stabilize with one hand on the medial malleolus and with the other hand stabilize the lateral aspect of the knee.
• Therapist applies a medially directed stress on the lateral knee.
• Flex patient’s knee to 30 degrees and apply the same pressure on the lateral side to isolate the medial collateral ligament’
Valgus Stress Test of the Knee: Positive Sign:
- Presence of pain and hypermobility at the medial aspect of the knee