Among other anomalies of the menisci, a hypoplastic medial meniscus is
extremely rare, with only four cases being described in the English l
iterature. We were unable to find a description of this anomaly in the
lateral knee compartment. A case report of a young patient with an ar
throscopic diagnosis of bilateral hypoplastic lateral menisci is prese
nted. We believe the arthroscopist should be familiar with this rare e
ntity, even though it might be an incidental finding.