Periosteal reaction
Periosteal Reaction
Periosteal reaction, also known as periostitis or subperiosteal new bone formation, is a radiographic finding that indicates the presence of various diseases or injuries affecting the bone.
Pronunciation
Periosteal Reaction: /ˌperēˈôstēəl rēˈakSH(ə)n/
Etymology
The term "periosteal reaction" is derived from the Greek words "peri", meaning around, "osteon", meaning bone, and the Latin word "reactio", meaning a response.
Definition
A periosteal reaction is a nonspecific response of the periosteum, a membrane that covers the outer surface of all bones, to injury or disease. It is characterized by the formation of new bone tissue around the affected area.
Causes
Periosteal reactions can be caused by a variety of conditions, including infection, trauma, neoplasm, and certain metabolic and systemic diseases.
Types
There are several types of periosteal reactions, including:
- Single-layered: A thin layer of new bone is formed.
- Multilayered: Multiple layers of new bone are formed.
- Solid: A solid mass of new bone is formed.
- Interrupted: The new bone formation is irregular or broken up.
Related Terms
External links
- Medical encyclopedia article on Periosteal reaction
- Wikipedia's article - Periosteal reaction
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