Avulsion fracture of the posterior crucial ligament

Avulsion of the posterior cruciate ligament (PCL) may be part of a knee dislocation with additional injury of the ACL and collateral ligaments.

Avulsion injuries of the PCL are rare in children.

These AP and lateral x-rays show a PCL avulsion in a 16-year-old patient.

A CT scan may be required to accurately assess the fracture pattern.

In these 3D-rendered CT images of a Salter-Harris type-IV fracture in a 13-year-old patient demonstrate a posterior tibial spine avulsion.