Recent patella dislocation - MRI

Case contributed by Dr Andrew Dixon

Presentation

Recent patella dislocation. ? retinacular tear

Patient Data

Age: 30
Gender: Female

MRI Knee

Modality: MRI

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

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. 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

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Case Information

rID: 16716
Case created: 15th Feb 2012
Last edited: 21st Nov 2016
Inclusion in quiz mode: Included

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