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Not yet recruitingNCT07535164SOLDIERUpdated Apr 16, 2026

Hyperbaric Oxygen Therapy as Adjunctive Treatment for Fracture-Related Infection

A Phase 2 interventional study of Hyperbaric Oxygen Therapy in Fracture Related Infection and Hyperbaric Oxygenation, sponsored by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA). Not yet recruiting at 1 site in Netherlands. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-04-16.

Sponsored by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

A fracture-related infection (FRI) is a difficult to treat condition in which a bone fracture and surrounding tissues are infected. This results in impaired healing and ongoing symptoms such as pain, wound leakage and swelling, which affects patients' functioning and quality of life. Despite adequate treatment in the form of extensive surgical debridement and long-term antibiotics, it is hard to obtain infection eradication.

This pilot, non-blinded, randomized controlled trial (RCT) will assess the feasibility of a subsequent, larger RCT, in which hyperbaric oxygen therapy (HBOT) will be investigated as potential treatment modality for FRI in adjunction to standard care. HBOT induces an increased oxygen tension in the body and thereby inhibits inflammation and the growth of several bacteria. Furthermore, it stimulates bone and blood vessel formation. Therefore, HBOT might be of added value in the treatment of FRI. Data on process-related outcomes, patient-reported outcome measures, and clinical parameters are obtained during this pilot study to determine whether a subsequent study investigating the efficacy of HBOT is viable.

02

Conditions studied

  • Fracture Related Infection
  • Hyperbaric Oxygenation

Keywords

  • Hyperbaric oxygen therapy
  • Fracture-related infection
  • Lower extremity
  • Feasibility studies
  • Randomized controlled trial
03

In context

Lead sponsor

Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) is the lead sponsor of 512 studies on the registry; 178 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age ≥ 18 years
  • Confirmed or highly suspected post-traumatic FRI of the lower limb, for which surgical intervention will be conducted

Exclusion criteria

Exclusion Criteria:

  • Patients with a known contraindication for HBOT: untreated pneumothorax; epilepsy; middle ear or thorax surgery in the previous 12 months; inability to equalize the ears; COPD grade 4 or other severe air trapping lung disease; presence of a device that is not known to be compatible with HBOT; severe claustrophobia; pregnancy; BMI ≥ 35; obstructive sleep apnoea syndrome or obesity hypoventilation syndrome with a chronic increased PaCO2 > 6.4 kPa
  • Patients with an early (i.e. diagnosed \<6 weeks post initial trauma) FRI, which is treated by DAIR-procedure (Debridement, Antibiotics, Implant Retention) without soft tissue reconstruction
  • Patients with an active isolation precautions protocol which is incompatible with treatment in a hyperbaric chamber (i.e. with multiple patients in the chamber at the same time)
  • Inability to understand Dutch or English
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
50 participants (estimated)

Study arms

  • Experimental
    Hyperbaric oxygen therapy (HBOT) + standard care

    Subjects receive 20 HBOT sessions within 30 days in addition to standard care. The first HBOT session will be conducted within 7 days after the index surgery in the context of FRI treatment.

    Drug: Hyperbaric Oxygen Therapy

  • No intervention
    Standard care

    Subjects receive standard care, consisting of at least surgical debridement of the FRI and administration of antibiotics.

Interventions

  • DrugHyperbaric Oxygen Therapy

    Each HBOT session will be conducted in accordance with the following protocol: three 20 minute blocks and one 15 minute block of 100% oxygen breathing at 2.4 ATA, split up by 5 minutes of oxygen rest (i.e. breathing air with 21% oxygen at 2.4 ATA)

06

What researchers measure

Primary outcomes

  1. Number of subjects included

    The total number of subjects included at the end of the inclusion period (i.e. one year after the start of the study)

    Time frame: 1 year

  2. Number of HBOT sessions completed by each subject in the intervention group

    Time frame: Within 30 days after the first HBOT session

  3. Amount of missing data per PROM per time point

    Time frame: At baseline and 6 weeks, 3 months, 6 months, and 1 year after the initial surgery in the context of FRI treatment

  4. Number of complete questionnaires per PROM per timepoint

    Time frame: At baseline and 6 weeks, 3 months, 6 months, and 1 year after the initial surgery in the context of FRI treatment

Other outcomes

  1. EQ-5D-5L scores

    Quality of life will be assessed using the five level version of the EuroQol Five Dimensions questionnaire (EQ-5D-5L). The index value can range between below 0 and 1. A higher score indicates a better quality of life.

    Time frame: At baseline and 6 weeks, 3 months, 6 months, and 1 year after the initial surgery in the context of FRI treatment

  2. EQ-VAS scores

    Quality of life will be assessed using the EuroQol Visual Analogue Scale (EQ-VAS). The questionnaire score can range between 0 and 100. A higher score indicates a better outcome.

    Time frame: At baseline and 6 weeks, 3 months, 6 months, and 1 year after the initial surgery in the context of FRI treatment

  3. LIMB-Q scores

    The subsets function, symptoms, physiological and work of the LIMB-Q questionnaire (a PROM validated for use in lower extremity trauma) will be assessed. The questionnaire score can range between 0 and 100. A higher scores indicates a better outcome.

    Time frame: At baseline and 6 weeks, 3 months, 6 months, and 1 year after the initial surgery in the context of FRI treatment

  4. Time to return to life role

    A self-designed questionnaire will be used to assess the time to return to life role for each subject. Life role is defined as executing structural (daily to weekly) activities, such as labour, informal care, or volunteer work. A longer time to return to life role implicates a longer recovery period.

    Time frame: From the initial surgery for FRI treatment to study completion at 1 year

  5. Number of recurrence(s) of infection

    The number of recurrence(s) of infection, defined as reappearance of a confirmatory FRI criterium after completing the initial surgical and antibiotic FRI treatment, occured during the follow-up period will be assessed.

    Time frame: From the initial surgery for FRI treatment to study completion at 1 year

  6. Number of repeat surgeries

    The number of repeat surgeries performed in the context of FRI treatment during the follow-up period will be assessed.

    Time frame: From the initial surgery for FRI treatment to study completion at 1 year

  7. Number of soft tissue reconstruction failures

    The number of soft-tissue reconstructions which have failed during the follow-up period will be assessed.

    Time frame: From the initial surgery for FRI treatment to study completion at 1 year

  8. Number of amputations

    The number of amputations performed (in the context of FRI treatment/obtaining infection control) during the follow-up period will be assessed.

    Time frame: From the initial surgery for FRI treatment to study completion at 1 year

  9. Change in CRP levels

    Laboratory findings on C-reactive protein (CRP) as collected in the context of standard care during the follow-up period will be assessed.

    Time frame: From the initial surgery for FRI treatment to study completion at 1 year

  10. Change in WBC counts

    Laboratory findings on white blood cell (WBC) counts as collected in the context of standard care during the follow-up period will be assessed.

    Time frame: From the initial surgery for FRI treatment to study completion at 1 year

  11. Change in ESR levels

    Laboratory findings on the erythrocyte sedimentation rate (ESR) as collected in the context of standard care during the follow-up period will be assessed.

    Time frame: From the initial surgery for FRI treatment to study completion at 1 year

  12. Number of subjects with remission of infection

    The number of subjects with remission of infection, defined as absence of all confirmatory criteria and suggestive signs for FRI and no use of antibiotics since \>7 days, will be assessed.

    Time frame: One year after the initial surgery for FRI treatment

  13. Number of subjects with non-union

    Time frame: One year after the initial surgery for FRI treatment

  14. Number of subjects with complete wound healing

    Time frame: One year after the initial surgery for FRI treatment

07

Study locations

1 site
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 16, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07535164
Lead sponsor
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Collaborators
Stichting ZiektekostenVerzekering Krijgsmacht
Responsible party
Professor Markus W Hollmann (MD PhD PhD Professor, Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)) — Principal investigator
First posted
Apr 16, 2026
Start date
Aug 2026 (estimated)
Primary completion
Aug 2028 (estimated)
Completion
Aug 2028 (estimated)
Last update
Apr 16, 2026

Study contacts

Robert P Weenink, MD PhD
Contact
r.p.weenink@amsterdamumc.nl
+31205669111
Markus W Hollmann, MD PhD PhD Professor
principal investigator · Amsterdam UMC

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.

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