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Osteoarthritis is a joint disease that mostly affects cartilage. Cartilage is the slippery tissue that covers the ends of bones in a joint. Healthy cartilage allows bones to glide over each other. It also helps absorb shock of movement.
An enchondroma is a type of benign (noncancerous) bone tumor that originates from cartilage. Cartilage is the specialized, gristly connective tissue from which most bones develop.Cartilage plays an important role in the growth process.There are many different types of cartilage throughout the body. An enchondroma most often affects the cartilage that lines the inside of the bones.artilage is the specialized, gristly connective tissue from which most bones develop. Cartilage plays an important role in the growth process. There are many different types of cartilage throughout the body. An enchondroma most often affects the cartilage that lines the inside of the bones.