Joint cartilage is the shiny white gristle covering the contact surfaces of the bones in articulating (moving) joints.

Outerbridge Grade 0 cartilage - normal patellar cartilage
Normal joint cartilage of the knee, as observed during an arthroscopy.
Hyaline cartilage
Articular cartilage


Articular cartilage: structural and developmental intricacies and questions. Decker RS, Koyama E and Pacifici M. Curr Osteoporos Rep. 2015 Dec; 13(6): 407–414.

See also -