M72.1: Knuckle pads
Connective tissue is found all over the body and fulfills various tasks. Connective tissue contains lots of fine fibers. Thus it can protect or stabilize organs. There is connective tissue beneath the skin and around muscles, for example. Tendons, ligaments and cartilage are also made of connective tissue.
When the connective tissue of the knuckles has thickened, they are also referred to as pads. The calluses may feel hard and look darker than the surrounding skin. You may also have these calluses on your toes. The precise cause of these calluses is not yet known.
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