Definition
Disease of the bones involving bone breakdown followed by a disordered pattern of excessive bone growth.
Characteristics
- Also known as osteitis deformans
- Late-onset (late adulthood)
- Initially, the bone breaks down, with excessive reconstruction later on
- Most cases involve multiple bones (polyostotic), while single bone involvement (monostotic) is more rare
- Does not involve the entire skeleton
- The typical facial involvement at the late stage is known as "lion face" (leontiasis ossea) due to the facial