Transient patellar subluxation with osteochondral fragment

Case contributed by Dr Vinay Shah


C/o Pain, swelling, limitation of joint movement. History of trauma.

Patient Data

Age: 25 years
Gender: Female

Moderate right knee joint effusion with supra-patellar extension is seen. Stranding of Hoffa’s fat pad noted.

Patchy bone contusion is seen in the lateral femoral condyle on anterior aspect and medial aspect of patella.

Approx 1.8 x 0.9cm size lesion in the joint space on medial aspect, may represent detached osteochondral fragment probably from the lateral femoral condyle. 

 Mild lateral patellar subluxation is noted.  Partial tear with edema in the medial retinaculum.

Partial tear of medial collateral ligament is noted. 

Case Discussion

These findings represent transient patellar subluxation with osteochondral fragment. 

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Case information

rID: 20755
Published: 10th Dec 2012
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

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