Menisci is the plural of the word 'meniscus' - the shock absorber of the knee.

Each knee has a pair of menisci - one on the medial side (medial meniscus) and one on the lateral side (lateral meniscus).
Synonyms:
knee cartilages
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CLINICAL PUBLICATIONS
The Basic Science of Human Knee Menisci. Fox AJS, Bedi A and Rodeo SA. Sports Health. 2012 Jul; 4(4): 340–351.
See also -