What signifies a positive outcome in the Valgus Stress Test?

A positive outcome in the Valgus Stress Test is indicated by increased laxity, apprehension, or pain in the joint being assessed, which is typically the knee. This test is specifically designed to evaluate the integrity of the medial collateral ligament (MCL).

When performing the Valgus Stress Test, the therapist applies a force to the outside of the knee while stabilizing the ankle, assessing the joint for any excessive movement at the medial side. If there is an increase in laxity—meaning the joint opens up more than expected—or if the patient reports pain or feels apprehensive about the movement, it suggests that there may be a partial or complete tear of the MCL.

Other choices do not relate to the Valgus Stress Test or the structures being tested. For instance, an absent or diminished radial pulse is indicative of vascular issues, pain in the piriformis relates to hip issues, and carpometacarpal joint pain pertains to the hand and wrist, none of which are relevant to the Valgus Stress Test procedure or outcomes. Understanding these connections helps clarify why increased laxity, apprehension, or pain signifies a positive test outcome.