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The cartilage

The joint cartilage consists of a hyaline cartilage. This one consists for 1 percent out of cartilage cells (chondrocytes) and for 99 percent out of the cartilage matrix. This is an intracellular substance, which is formed out of cartilage cells.

The joint cartilage is neither supplied with blood nor does it contain any nerves. Thus cartilage damages are not reported to the brain and this way they become worse unnoticeably. Not until the bone supplied well with nerves, while the cartilage is completely worn away, takes part or until a bone irritation due to strong pressure peaks by torn menisci or loose bodies (these are torn down parts of the cartilage or bone) takes place, pains do appear.