Osteochondrosis

Any disease that affects the progress of bone growth by killing bone tissue. Osteochondrosis is seen only in children and teens whose bones are still growing.

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Any of a group of disorders of one or more ossification centers in children, characterized by degeneration or aseptic necrosis followed by reossification; includes the various forms of epiphysial aseptic necrosis. [osteo- + G. chondros, cartilage, + -osis, condition]

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os·teo·chon·dro·sis -.kän-'drō-səs n, pl -dro·ses -.sēz a disease esp. of children and young animals in which an ossification center esp. in the epiphyses of long bones undergoes degeneration followed by calcification

os·teo·chon·drot·ic -'drät-ik adj

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n.

see osteochondritis

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os·teo·chon·dro·sis (os″te-o-kon-droґsis) a disease of the growth or ossification centers in children that begins as degeneration or necrosis and is followed by regeneration or recalcification. Called also epiphyseal ischemic necrosis. It can occur in any of numerous bones: in the calcaneus (os calcis) it is sometimes called apophysitis; in the capitular head of the femur it is called Legg-Calvй-Perthes, Perthes, or Waldenstrцm disease and coxa plana; in the lunate bone it is called Kienbцck disease; in the head of the second metatarsal it is called Freiberg infraction; in the tibial tuberosity it is called Osgood-Schlatter or Schlatter disease; in the vertebrae it is called Scheuermann or juvenile kyphosis; and in the capitellum of the humerus it is called Panner disease.