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Repaired osteochondritis dissecans of the knee

Case contributed by Dr Chris O'Donnell


Had chronic knee pain with intermittent locking. OCD repaired, now for check of fragment union

Patient Data

Age: 22
Gender: Male

MRI following reattachment surgery


Osteochondral fragment has been retrieved and reattached arthroscopically using 2 dissolvable pins (arrow).  The bone has almost united with a reasonable cover of overlying articular cartilage

Original MRI performed prior to surgery

Large well-established OCD (arrow) on lateral aspect of the medial femoral condyle with a large cavity and separated osteochondral fragment sitting in the supra-patellar recess laterally (arrow)

Case Discussion

Once the OCD fragment has separated it is still worthwhile attempting to reattach in order to establish a smooth articular surface. When reporting MRI it is important to localize the fragment for the surgeon.

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