Bay Area Hyperbarics

Understanding Osteoradionecrosis and HBOT

By Lisa St. John, M.S.
Understanding Osteoradionecrosis and HBOT

Radiation therapy is a powerful tool in the fight against head and neck cancers, but it can sometimes lead to long-term side effects such as osteoradionecrosis (ORN). One of the most effective supportive therapies available today is HBOT for osteoradionecrosis, which uses pressurized oxygen to promote healing, reduce complications, and restore tissue health in patients struggling with this challenging condition.

What is Osteoradionecrosis (ORN)?

Osteoradionecrosis (ORN) is a condition where bone tissue in the jaw or other areas fails to heal properly after radiation therapy. The high doses of radiation used to destroy cancer cells can impair blood vessels, limit oxygen supply, harm surrounding tissues and reduce the body’s natural ability to repair damaged tissues. Without proper intervention, ORN can progress, causing significant pain, infection, and functional difficulties. Accessing specialized osteoradionecrosis of the jaw treatment helps patients receive tailored therapies–such as hyperbaric oxygen therapy–that address both the cause and symptoms of this condition.

Signs and Symptoms of ORN

Patients may notice symptoms months or even years after completing radiation therapy. Common warning signs include:

  • Persistent pain or swelling in the jaw
  • No-healing wounds or exposed bone in the mouth
  • Loose teeth or difficulty chewing
  • Infections that return frequently despite treatment

These symptoms often begin subtly but can progress quickly if not managed. For example, a patient may initially feel only mild jaw discomfort but later develop exposed bone or recurring infections that significantly disrupt daily activities. Because ORN is progressive, it is not something that heals on its own. Instead, it requires careful medical evaluation and early treatment. Identifying these symptoms early is critical. Prompt access to comprehensive orn treatment can prevent the condition from worsening and improve quality of life.

Risk Factors and Complications

Certain patients are more likely to develop ORN depending on their overall health and treatment history. Some risk factors include:

  • High radiation doses to the head and neck area
  • Smoking, alcohol consumption, or poor oral hygiene
  • Recent dental extractions or trauma in irradiated areas
  • Pre-existing health conditions such as diabetes

In addition to these risk factors, the time between radiation therapy and the onset of symptoms can vary widely. Some patients may develop osteoradionecrosis within months, while others may not experience complications for several years. Without proper intervention, the condition can worsen and lead to complications such as severe pain, jawbone fractures, and an inability to chew or swallow food comfortably.

If left untreated, ORN can result in serious complications like chronic infections, jaw fractures, or impaired ability to eat and speak. These outcomes not only affect physical health but also have profound social and emotional impacts, as patients may struggle with nutrition, speech, and confidence. This makes early diagnosis and evidence-based osteoradionecrosis treatment vital for recovery and long-term wellbeing.

When to See an ORN Specialist

Patients who develop signs of ORN should consult with a physician experienced in this condition. An osteoradionecrosis specialist can provide a full evaluation, recommend imaging or lab tests, and determine the most effective course of action.

Specialists often begin by reviewing the patient’s cancer treatment history, examining oral tissues, and assessing whether exposed bone or infection is present. In some cases, imaging tests such as CT scans or MRIs may be ordered to determine the extent of bone damage. This diagnostic process helps rule out other possible causes of jaw pain and ensures a precise treatment plan.

An osteoradionecrosis specialist typically works in collaboration with a multidisciplinary team, which may include oncologists, dentists, oral surgeons, and hyperbaric medicine physicians. Together, they can create an integrated care plan that addresses the physical damage, manages pain, and restores function.

For many patients, early referral to a specialist is the key to preventing the need for invasive procedures like surgery or jaw reconstruction. By starting evidence-based therapies such as HBOT early in the disease process, patients can significantly improve healing outcomes and reduce the risk of permanent disability.

HBOT and Insurance/Medicare Coverage for ORN

Hyperbaric Oxygen Therapy (HBOT) is widely recognized as an effective adjunctive therapy for ORN. During HBOT, patients breathe 100% oxygen in a pressurized chamber, which significantly increases oxygen delivery to tissues, stimulates new blood vessel growth, and promotes healing in radiation-damaged bone.

For eligible patients, Medicare and many private insurers cover HBOT for ORN, as it is an approved medical use. Coverage can vary, so it is important for patients to confirm benefits with their provider. Resources like Medicare’s HBOT coverage page can provide clarity on eligibility and financial planning for treatment.

At Bay Area Hyperbarics, we see numerous patients with ORN and have a very high rate of success in treating such patients. Most patients find themselves able to engage in daily activities they could not engage in for years and find their quality of life significantly enhanced. Give us a call, and we can help get you started on the road to recovery!

Lisa St. John, M.S.
Lisa St. John, M.S.
Clinic Director and Founder

Lisa is our Clinic Director and Founder. She earned her Master’s degree from Harvard University, completed a Fellowship at Stanford University, and has spent the last 30 years working in the healthcare field.

CONTACT US

Leave us a message and we’ll get back to you as soon as possible.

FIND US HERE

San Jose/Los Gatos Clinic
14589 South Bascom Avenue,
Los Gatos, CA 95032

PH: 408-356-7438
TREATMENT HOURS
Mon-Fri: 5:30 am – 8:00 pm
Sat & Sun: 8:00 am – 2:30 pm
BILLING HOURSMon-Fri: 9:00 am – 4:00 pm
NEW PATIENTSMon-Fri: 8:00 am – 5:00 pm

©2026 Bay Area Hyperbarics. All Rights Reserved