Recent patella dislocation (MRI)

Case contributed by Dr Andrew Dixon

Presentation

Recent patella dislocation ? retinacular tear.

Patient Data

Age: 30 years
Gender: Female

MRI Knee

MRI

Lateral patellar dislocation and bone marrow edema at the medial patellar facet and lateral femoral condyle.

Partial tear of the medial patellar retinacular / medial patellofemoral-tibial ligament. Some high signal within the inferomedial portion of the patellar cartilage, but no definite osteochondral defect.  There is also a small microtrabecular fracture non-articular portion of the medial femoral condyle. Medial meniscal contusion but no tear. Background patella alta and trochlear dysplasia

Case Discussion

Features of recent patellar dislocation with knee joint effusion and "kissing contusions" involving the inferomedial portion of the patella and the lateral femoral condyle.

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.