Osteitis Deformans

**Definition:** A disease marked by repeated episodes of increased bone resorption followed by excessive attempts at repair, resulting in weakened, deformed bones of increased mass. The resultant architecture of the bone assumes a mosaic pattern in which the fibers take on a haphazard pattern instead of the normal parallel symmetry.

**Tree numbers:** - C05.116.692

**Synonyms:** - Osseous Paget's Disease - Paget Disease of Bone - Paget Disease, Bone - Paget's Disease of Bone