What it is
Severe trauma — crush injuries, compartment syndrome, complicated fractures — doesn't just break structures. It chokes off the microcirculation, so tissue that survived the initial impact slowly dies from lack of oxygen in the hours and days that follow.
How hyperbaric oxygen helps
Plasma-dissolved oxygen reaches tissue through compressed and damaged capillaries that red blood cells can't navigate. That keeps borderline tissue alive, reduces swelling (oxygen at pressure constricts vessels without reducing delivery), and supports the fight against infection in contaminated wounds.
What treatment looks like
Usually 3–12 sessions at 2.0–2.4 ATA in the days immediately after injury and surgery — the window when salvageable tissue is deciding which way to go.
- Best started early, coordinated with your trauma or orthopedic surgeon.
- Recognized by the FDA and covered when criteria are met.
- Goal: less tissue loss, fewer amputations, better surgical outcomes.
The evidence, honestly
Grade A — Strong Evidence
Supported by randomized trials and/or decades of consistent clinical results.
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Hyperbaric oxygen therapy in the management of crush injuries: a randomized double-blind placebo-controlled trial
Journal of Trauma · 1996 · n=36 · rct
Small double-blind RCT showing improved wound healing and fewer additional surgical procedures with HBOT in severe crush injuries, especially in older patients and severe wounds.
Common questions
When should HBOT start after a crush injury?
As early as your surgical team allows — ideally within the first 24–48 hours, when swelling and oxygen starvation are actively deciding how much tissue survives.
Educational content, not medical advice — see our medical disclaimer. *Medicare coverage requires meeting clinical criteria; we verify yours for free. Last medically reviewed July 2026 by Dr. David Greene, MD.