Dysplasia is a disorder affecting the bone joints. It is characterized by overgrowth of the cartilage on the end of one or more of the long bones (carpal or tarsal bones) in the hand or foot. Less often, the cartilage on other bones such as those in the ankle, knee or hip joint can be affected.
Usually only one limb is involved. The limbs may be unequal in length.
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| The ankle bone (talus) and the ends of the two lower leg bones (tibia and fibula) form the ankle joint, which is stabilized and supported by three groups of ligaments. Muscles and tendons move the foot and ankle. |
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