osteochondritis
/ˌɒstɪəʊkɒnˈdrʌɪtɪs/Medicine
noun
Inflammation of bone and cartilage; especially any of several conditions in which there is avascular necrosis of, or chronic trauma to, a specific epiphysis or apophysis in a child or adolescent.
Origin
Late 19th century; earliest use found in John S. Billings (1838–1913). From osteo- + chondritis, after German Osteochondritis.