Review Question - QID 784

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Posterolateral Corner Injury Presentation Physical exam QID: 784 (OBQ07.123)

QID 784 (Type "784" in App Search)

A soccer player sustains a knee injury. He is noted to have a significant increase in tibial passive external rotation both at 30 and 90 degrees. Which of the following structures is least likely to be injured?

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Fibular collateral ligament tear

215/3002

Popliteus tendon tear

207/3002

Posterior cruciate ligament tear

13%

383/3002

Arcuate ligament tear

14%

435/3002

Posterior oblique ligament tear

58%

1741/3002

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The posterior oblique ligament is a structure on the medial aspect of the knee.

The fibular collateral ligament (also known as lateral collateral), Arcuate ligament, and popliteus tendon are all components of the postero-lateral corner (PLC). A positive dial test at 30 degrees indicates an isolated PLC injury, while a positive dial test at 30 and 90 degrees indicates PLC and concurrent posterior cruciate ligament (PCL) injury.

The Fanelli article describes the evaluation and treatment of multi-ligament knee injuries including PCL and posterior-lateral corner tears.

The multiple-ligament injured knee: evaluation, treatment, and results.

Gregory C Fanelli,

Daniel R Orcutt,

Craig J Edson

Knee & Sports
- Posterolateral Corner Injury

Gregory C Fanelli, ASCOPY 2005

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