Proximal MCL osseous avulsion

Case contributed by Dr Matt Skalski

Presentation

Knee trauma.

Patient Data

Age: 46
Gender: Female
X-ray

There is a large osseous fragment along the medial femoral epicondyle at the expected attachment for the proximal medial collateral ligament, with multiple adjacent small comminuted fragments.  This fragment is displaced from its parent site by approximately 5mm. 

A mild suprapatellar effusion is noted. 

Case Discussion

Typically, when the proximal medial femoral collateral ligament (MCL) is injured, it is seen as a sprain, partial or complete tear on MRI. When this occurs, it may later calcify to produce a pellegrini stieda lesion. In this case, however, the MCL managed to hold on and drag a piece of the femur down with it when it was avulsed, which is known as a Stieda fracture

PlayAdd to Share

Case information

rID: 32241
Published: 20th Nov 2014
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

Updating… Please wait.

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

 Thank you for updating your details.