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Valgus and varus stress test results aren’t as direct as some other tests you might have had before. Instead of giving an exact range or a specific number, they give your provider a better understanding of what might be injured in your joint (and how severe the injury is).
The valgus stress test, also known as the medial stress test, is used to assess the integrity of the medial collateral ligament (MCL) of the knee. MCL injuries are common in the athletic population and can occur as either isolated injuries, or combined with other structural injuries [1].
The valgus and varus stress tests are specialized maneuvers used to assess the stability of the knee joint. The valgus stress test focuses on the MCL by applying an outward force to the knee, while the varus stress test targets the LCL by applying an inward force.
The relationship of the forefoot to rearfoot is measured to quantify forefoot varus or forefoot valgus. To measure the relationship, the patient is prone lying with figure ‘4’ position for the non-examined lower extremity.
The moving valgus stress test, described by O’Driscoll et al, 11 was found to be 100% sensitive and 75% specific for MCL injuries. The test is performed with the patient upright; the shoulder is placed in 90° of abduction and maximal external rotation with the elbow in maximal flexion.
5 cze 2022 · Reversed pivot shift test with the knee positioned at 90°, ER and valgus forces are applied to tibia as the knee is extended, the tibia reduces with a palpable clunk
- Varus Stress Test: - Primary vs Secondary Restraints: - seationing of MCL results in marked valgus instability; - isolated sectioning of ACL, PCL, LCL, or posterolateral structures does not cause large increases in valgus angulation; - cutting of MCL + PCL results in more instability than any other combination;
