(Fig 3-B.09) Complete Distal LCL Tear with Retraction

https://youtu.be/--idGICYg8g

https://youtu.be/6WOItzqJj1g

 

📌Posterolateral Corner (PLC) Injuries

• Low-grade PLC injuries are often managed non-operatively
• Significant PLC injuries involving the biceps femoris, fibular collateral ligament, and/or popliteus may require surgical intervention

 

✅ MRI Assessment of PLC Injuries

• Evaluating PLC injuries with MRI is challenging due to anatomic complexity
• However, larger PLC structures are easy to assess with standard MRI techniques
• Direct visualization of small structure involvement on MRI is not necessary to report a clinically unstable PLC injury

 

✅ Key Information Needed Extent of Injury

• Is there injury to the biceps femoris, lateral collateral ligament, or popliteus?
• If so, is it a low-grade partial tear, high-grade partial tear, or full-thickness tear?

• Is there injury or evidence of injury (e.g., edema) to smaller PLC structures like the arcuate ligament, fabellofibular ligament, or popliteofibular ligament?

• Are there additional injuries present involving a cruciate ligament, collateral ligament, hyaline cartilage, or bone?

 

Radiol Clin North Am. 2018 Nov;56(6):935-951.

 

"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"

© 2022 MSK MRI Jee Eun Lee All Rights Reserved.

No unauthorized reproduction, redistribution, or use for AI training.

#plcinjury, #posterolateralcornerinjury, #kneeanatomy, #kneesurgery, #orthopedics, #sportsmedicine, #mri, #bicepsfemoris, #fibularcollateralligament, #popliteus