The Journal of Bone and Joint Surgery, Vol 74, Issue 8 1186-1190, Copyright © 1992 by Journal of Bone and Joint Surgery, Inc
Lateral meniscal variant with absence of the posterior coronary ligament
DC Neuschwander, D Drez and TP Finney
Louisiana State University, Lake Charles 70601.
We reviewed the cases of 3468 patients who had had arthroscopy of the knee
between January 1976 and December 1988. Twenty-six patients (0.8 per cent)
had a partial or a complete discoid lateral meniscus, and seven (0.2 per
cent) had the Wrisberg-variant-type lateral meniscus. Of the seven
patients, six had operative stabilization of the meniscus and one had a
partial lateral meniscectomy because of an irreparable complex tear.
Subjective, objective, and radiographic evaluations were performed on the
patients who had had stabilization of the meniscus. According to the scale
of Tegner and Lysholm, the result was excellent in four patients, good in
one, and fair in one. None of the six patients had a tear of the sutured
meniscus after an average follow-up of thirty-two months (range,
twenty-four to forty months). Two patients had progressive symptoms
attributable to osteoarthrosis, but the changes in the articular cartilage
had been present at the time of the index procedure. None of the seven
Wrisberg-variant-type menisci demonstrated a true discoid shape of the
meniscus. We therefore classified this lesion as a lateral meniscal variant
with absence of the posterior coronary ligament.
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