Radiation injury · bone · reconstruction
Osteoradionecrosis
Osteoradionecrosis is a delayed radiation complication in which bone and surrounding tissues lose the ability to maintain normal repair. It is most recognized in the jaw but can occur in other irradiated bones.
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What happens to the bone
Radiation can impair microvascularity and tissue turnover. Bone may become exposed, infected, painful or structurally compromised, and adjacent soft tissue may also be fibrotic and poorly vascularized.
02
Evaluation
Assessment may include imaging, oral/maxillofacial or reconstructive evaluation, infection assessment, dental history in jaw cases and review of prior radiation. Recurrent malignancy must be considered when clinically relevant.
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Treatment framework
Treatment varies with severity and location. It may include meticulous local care, infection treatment when indicated, removal of devitalized bone, hyperbaric oxygen in selected patients and reconstructive surgery using vascularized tissue for advanced disease.
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Role of HBOT
CMS lists osteoradionecrosis as a covered indication for hyperbaric oxygen when used as an adjunct to conventional treatment. The decision to use it is individualized and does not replace surgery when surgery is required.
Common questions
Questions about osteoradionecrosis
These are general educational answers. Diagnosis and treatment require direct clinical assessment.
Is osteoradionecrosis an infection?
Infection can coexist, but the underlying problem is radiation-damaged bone and soft tissue with impaired repair capacity.
Why is the jaw commonly affected?
The jaw may receive substantial radiation exposure in head-and-neck cancer treatment and is repeatedly subjected to dental trauma, chewing forces and oral bacteria.
Can dental extraction trigger osteoradionecrosis?
Dental trauma in a previously irradiated jaw can increase risk. Preventive dental planning before radiation and careful management afterward are important.
Does HBOT cure osteoradionecrosis by itself?
No. It may be used as an adjunct in selected cases. Advanced disease may still require debridement, resection or reconstruction.
When is reconstructive surgery needed?
Surgery becomes more likely when there is extensive nonviable bone, fracture, fistula, major soft-tissue loss or failure of conservative measures.
