## Overview Periosteal new bone formation is extra bone produced by the periosteum (the outer layer of bone) in response to trauma, inflammation, or instability. It is seen on radiographs at sites of previous injury, splint bones, or stress remodeling. Clinical importance depends on whether it is actively inflamed or mechanically interfering. ## Causes Trauma, periostitis, or chronic instability. ## Diagnosis Radiographs correlated with palpation and lameness examination. ## Treatment Rest and anti-inflammatories for active inflammation. Mature, non-painful new bone often requires no treatment. ## Recovery and Prognosis Good once inflammation settles. The bony enlargement may remain. ## Prevention Avoidance of repetitive trauma.
radiographic periosteal reaction; local swelling or pain if active; may be incidental if mature
## Overview Periosteal new bone formation is extra bone produced by the periosteum (the outer layer of bone) in response to trauma, inflammation, or instability. It is seen on radiographs at sites of previous injury, splint bones, or stress remodeling. Clinical importance depends on whether it is actively inflamed or mechanically interfering. ## Causes Trauma, periostitis, or chronic instability. ## Diagnosis Radiographs correlated with palpation and lameness examination. ## Treatment Rest and anti-inflammatories for active inflammation. Mature, non-painful new bone often requires no treatment. ## Recovery and Prognosis Good once inflammation settles. The bony enlargement may remain. ## Prevention Avoidance of repetitive trauma.
radiographic periosteal reaction; local swelling or pain if active; may be incidental if mature