Frog-Leg Test Maneuver for the Diagnosis of Injuries to the Posterolateral Corner of the Knee: A Diagnostic Accuracy Study.

Objective: To determine the sensitivity and specificity of a new clinical test for the diagnosis of injuries to the posterolateral corner of the knee by using magnetic resonance imaging (MRI) as the reference standard.

Design: Diagnostic accuracy study.

Setting: A tertiary care teaching hospital.