<unk>  is a disorder that is characterized by abnormal hardening of bone and an elevation in bone density. It may predominantly affect the medullary portion and/or cortex of bone. Plain radiographs are a valuable tool for detecting and classifying osteosclerotic disorders. It can manifest in localized or generalized<unk> . Localized<unk>  can be caused by Legg–Calvé–Perthes disease, sickle-cell disease and osteoarthritis among others.<unk>  can be classified in accordance with the causative factor into acquired and hereditary.
Osteosclerosis
Dysosteosclerosis
Osteoporosis
Osteopathy
Hyperostosis
Osteopoikilosis
Osteolysis
Enostosis