Posterior ligament cruciate (PCL) avulsion fracture

Case contributed by Domenico Nicoletti


Soccer player falling with flexed knee.

Patient Data

Age: 35 years
Gender: Male

MR images show an avulsed bone fragment arising from the posterior tibial plateau with an intact PCL. There’s also joint effusion with contusion of the anterior prepatellar soft tissues. The anterior cruciate ligament, collateral ligament and menisci are normal.

Case Discussion

The posterior cruciate ligament (PCL) is an important stabilizer of the knee. Isolated rupture of the PCL is more common as an avulsion to its tibial insertion. Lesions of the femoral origin or as lesions of the midsubstance are less frequent.


Radiographer: TSRM Fabio Imola

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