Cartilages or 'knee cartilages' or 'semi-lunar cartilages' are the menisci of the knee.

The 'semi-lunar cartilages' are the shock absorbers between the femur (thigh) bone and the tibia (shin) bone. The correct name of a semi-lunar cartilage is 'meniscus'.


Clearing up confusion about knee cartilage

Video discussing why people mix up the two kinds of tissue referred to as 'cartilage'.