Transient patellar dislocation

Case contributed by Dr Vinay Shah


Trauma, knee pain, swelling and clicking in the left knee.

Patient Data

Age: 20 years
Gender: Female
  • mild left knee joint effusion
  • bone marrow edema / contusion in the anterior lateral femoral condyle and medial patella
  • small defect / fracture at patella on infero-medial aspect.  Mild stranding of adjacent infrapatellar fat layer noted
  • partial tear in the course of medial retinaculum near patellar attachment
  • persistent mild lateral sublaxation of the patella

Case Discussion

These findings represent transient patellar dislocation.   

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Case information

rID: 20932
Published: 22nd Dec 2012
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

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