Valgus Stress Test Knee
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- Valgus Stress Test Knee
- Evaluate the integrity of the Medial Collateral Ligament or MCL in the setting of knee injury
- Patient is supine
- Leg is relaxed, flexed to about 30° passively so that the knee is "unlocked"
- Examiner palpates medial joint line, applies valgus force to the patients knee
- The exam should be repeated 0° or in full extension as well
- Positive test
- Laxity or pain with valgus stress
- Laxity at 30°: Isolated MCL injury
- Laxity at 0°: suggests multiligament knee injury
- Grade 1: pain without laxity
- Grade 2: pain, laxity compared to contralateral limb
- Grade 3: pain, gross laxity
- At 30°:
- Sensitivity: 86 - 96%
- Encinas-Ullán, Carlos A., and E. Carlos Rodríguez-Merchán. "Isolated medial collateral ligament tears: an update on management." EFORT open reviews 3.7 (2018): 398.
- Harilainen A. Evaluation of Knee Instability in Acute Ligamentous Injuries. Ann Chir Gynaecol. 1987; 76: 269-273.