Purpose: To identify patient characteristics indicative of a medial collateral ligament injury.

Stage of CPR Development: Derivation.

Rule:

1. Trauma by external force to leg
2. Rotational trauma
3. Pain with valgus stress test at 30° (PVLS30)
4. Laxity with valgus stress test at 30° (LVLS30)

Interpretation:

Variable Sensitivity Specificity +LR -LR
History > 1 out 2 0.86 0.57 2.0 0.3
History > 2 out 2 0.05 0.93 0.7 1.0
History > 1 out 2 + PVLS30 0.56 0.88 4.8 0.5
History > 1 out 2 + LVLS30 0.72 0.75 2.9 0.4
History > 2 out 2 + LVLS30 0.06 0.97 1.9 1.0
History > 1 out 2 + PVLS30 + LVLS30 0.56 0.91 6.4 0.5

Research:

1. Kastelein M, Wagemakers HPA, Luijsterburg AJ, Verhaar JAN, Koes BW, Bierma-Zeinstra SMA. Assessing Medial Collateral Ligament Knee Lesions in General Practice. The American Journal of Medicine. 2008; 121(11): 982-988.

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