Lateral collateral ligament rupture

Case contributed by Henry Knipe
Diagnosis certain


Sports injury. Lateral knee pain.

Patient Data

Age: 25 years
Gender: Male

Full-thickness rupture (grade III) of the distal lateral collateral ligament. The biceps femoris tendon appears attenuated and hyperintense some fibers are in intact (grade II).  Hyperintensity of the popliteofibular and lateral meniscocapsular fibers - the remainder of the posterolateral corner structures appear uninjured.

No meniscal tear. Medial collateral and cruciate ligaments are intact. 

Case Discussion

The lateral collateral ligament is one of the main stabilizers of the posterolateral corner of the knee. The posterolateral corner is uncommonly injured in isolation (as in this case) and associated meniscal and anterior cruciate ligament injuries are common.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.