injury to the left knee. Dial test was positive

A patient met with Road Traffic Accident with subsequent injury to the left knee. Dial test

was positive. What could be the cause?

1. Medial Collateral Ligament Injury

2. Medial Meniscal Injury

3. Lateral Meniscus Tear

4. Posterolateral Corner Injury

Dial Test

The dial test checks the rotation allowed at the knee joint. Patients who have posterolateral rotatory instability, may have excessive rotation at the knee joint. The test is done with the patient lying face down, and the knees bent about 30 degrees. The feet are turned outwards and compared to each other. Excessive rotation is a sign of posterolateral corner injury.