Blood Flow Restriction Exercise for Achilles Tendon Rupture
Official title: The Effectiveness of Low-load Blood Flow Restriction Exercise in Patients With an Acute Achilles Tendon Rupture Treated Non-surgically
Run by University of Aarhus · NCT06434272 · Data updated 2026-11-12
This study is testing if adding Blood Flow Restriction Exercise to regular treatment can help people recover better from an Achilles tendon rupture, depending on when they start the exercise.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 218 (estimated) |
| Sponsor | University of Aarhus Academic / other |
| Locations | 1 site (Aarhus N, Denmark) |
| Status | Recruiting |
| Started | January 28, 2025 |
| Main results expected | January 9, 2028 |
| Study ends | January 9, 2028 |
| Registry record updated | October 30, 2026 |
| Trial ID | NCT06434272 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older who have sustained an acute Achilles tendon rupture and can start treatment within 72 hours.
✕Probably not a fit
Patients with bilateral Achilles tendon ruptures or significant comorbidities affecting lower extremity function may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial investigates the effects of Blood Flow Restriction Exercise (BFRE) as an adjunct to usual care in patients with an acute Achilles tendon rupture. Participants will be randomly assigned to receive BFRE either in the early phase (1-12 weeks) or later phase (13-24 weeks) after their injury, alongside standard treatment. The study aims to determine the effectiveness of BFRE compared to usual care alone and to identify the optimal timing for initiating BFRE. Outcome measures will include functional tests and self-reported symptoms assessed at 13 and 25 weeks post-allocation.
Why it matters
Potential benefit: If successful, this approach could enhance recovery and functional outcomes for patients with Achilles tendon ruptures.
How similar studies have gone: While the use of BFRE is gaining attention, this specific application in Achilles tendon rupture is relatively novel and has not been extensively tested in prior studies.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * aged 18 years or older * have started initial treatment within 72 hours of Achilles tendon rupture * understand written and spoken Danish Exclusion Criteria: * bilateral Achilles tendon rupture * previous Achilles tendon rupture in either leg * decreased lower extremity function, caused by conditions other than Achilles tendon rupture * treated with fluoroquinolones within the last six months * treated with corticosteroid injection(s) in the area near the Achilles tendon within the last six months. * diabetes * previous diagnosed thrombosis * Known atherosclerosis in the peripheral arteries of the lower limb * other reasons for exclusion (cognitive deficits, inability to provide informed consent, requiring cast-treatment due to low compliance regarding gradual wedge removal, etc.)
Where it's running
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Aarhus University Hospital
Aarhus N, Denmark, Denmark Recruiting
Study contacts
- Principal investigator: Andreas Bentzen, MHSc — University of Aarhus
- Study coordinator: Andreas Bentzen, MHSc
- Email: andreas.bentzen@clin.au.dk
- Phone: 4553109112
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Immediate neuromuscular electrical stimulation for Achilles tendon pain and function
Researchers will try two types of neuromuscular electrical stimulation to see if they immediately reduce pain and improve heel-rise performance in people with Achilles tendinopathy or a past Achilles tendon rupture.
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Achilles Tendon Rupture: 12-Month Outcomes After Non-Surgical Rehab
This study tests how well people recover 12–15 months after non-surgical treatment for an Achilles tendon rupture using a structured rehab protocol in an NHS setting.
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Blood flow restriction training to improve recovery after Achilles tendon repair
This trial will test whether adding blood flow restriction training to standard rehabilitation helps adults recover muscle strength and tendon function after surgical repair of an Achilles tendon rupture.
-
Collagen scaffold augmentation to support Achilles tendon repair
This trial will test whether adding a collagen scaffold during surgical repair helps adults with acute Achilles tendon ruptures recover better than standard repair.
-
Strength training effects on recovery after Achilles tendon rupture
This study is testing how different levels of strength training can help men recover better after an Achilles tendon rupture.
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New surgical method for repairing ruptured Achilles tendon
This study is testing a new two-layer surgery for fixing a ruptured Achilles tendon to see if it helps people recover better than the usual non-surgical treatment.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.