抄録
We report a case of osteonecrosis-like lesion of the medial femoral condyle after arthroscopic partial medial meniscectomy. The patient was 34-year-old man who complained of pain on the medial side of the right knee after a rear-end automobile collision in 2002. Physical examination showed a normal range of motion of the knee. McMurray’s test was positive medially, and he had tenderness of the medial joint line. MRI showed a horizontal tear of the posterior horn of the medial meniscus.
The patient requested conservative treatment. However, medial pain of the right knee continued. Arthroscopic medial partial meniscectomy was performed 5 months after injury. Although symptoms diminished temporarily after surgery. He complained of recurrent knee pain 5 weeks after surgery. Radiographs and MRI showed osteonecrosis-like lesion of the medial femoral condyle. The patient underwent conservative treatment by bracing. At 12 months after surgery, the symptoms had resolved and the lesion had disappeared. Several authors have reported osteonecrosis of the femoral condyle after arthroscopic meniscectomy. This case is also considered to be rare, because the lesion was in a younger patient, and the postoperative course by conservative treatment was good.
