the anterior horn of the medial meniscus is the site of most variations, but anomalies of the medial meniscus are extremely rare. From July 1990 through December 1994, the authors performed arthroscopy on 1068 symptomatic knee joints and
incidentally
found an anomalous insertion of the anterior horn of the medial meniscus into the anterior cruciate ligament eleven knees. They had another lesion(7 discoid lateral meniscus with or without tear, discoid medial meniscus, medial meniscus tear,
medial
collateral ligament, tear, Posterior cruciate ligament avulsion fracture). All but one discoid lateral menisci were reshaped, one to be treated by total lateral meniscectomy discoid medial meniscus also by reshaping, torn medial meniscus by
partial
meniscectomy, torn medial collateral ligament by repair and avulsion fracture of posterior cruciate ligament by arthroscopic pinning, but the anomaly of medial menisci was left alone. Follow up was done from 7 to 38 month(average, 21.7 months)
after
surgery. The results were satisfactory except for 2 patients. One damaged his knee in a traffic accident and the other was treated by total meniscectomy of discoid lateral meniscus. It was concluded that this anomaly was not related to the
patient's
symptoms and mainly associated with discoid lateral meniscus.
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