抄録
Osteochondritis dissecans (OCD) in the lateral femoral condyle of the knee is sometimes accompanied by discoid meniscus. We report a case of large OCD with a torn discoid meniscus that was treated by internal fixation with a bone peg.
A 16-year old male complained of knee pain and locking after playing soccer. Roentgenograms showed a large area of OCD affecting the lateral femoral condyle. MRI confirmed the OCD lesion with a torn lateral discoid meniscus. The patient was treated arthroscopically by partial excision of the discoid meniscus and drilling of the OCD lesion. However, 7 months later, he again suffered locking of the same knee after playing soccer. MRI showed that a large loose body had become detached from the lateral femoral condyle. We performed reattachment using bone peg fixation from the proximal part of the tibia. No displacement of the fragment was observed postoperatively 9 months after the operation, and union of the fragment was also confirmed by MRI and CT scan.
We think that bone peg fixation is a good option for treatment of OCD associated with a large free fragment in order to preserve the articular cartilage.
