Strength training with blood-flow restriction after ACL reconstruction
Official title: Clinical-randomized Trial of the Effect of Rehabilitation Therapy Using Strength and Blood Flow Restriction Training on Muscular Fitness and Regeneration After Anterior Cruciate Ligament Reconstruction
Run by University Hospital, Bonn · NCT07043569 · Data updated 2026-11-12
This trial will test whether adding blood flow restriction to light strength training helps people recovering from ACL reconstruction regain muscle, strength, and knee function during outpatient rehabilitation.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 30 (estimated) |
| Sponsor | University Hospital, Bonn Academic / other |
| Locations | 1 site (Bonn, North Rhine-Westphalia) |
| Status | Recruiting |
| Started | June 20, 2025 |
| Main results expected | July 31, 2026 |
| Study ends | December 31, 2026 |
| Registry record updated | December 8, 2025 |
| Trial ID | NCT07043569 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are people who have had ACL reconstruction and are able to participate in outpatient rehabilitation without vascular implants or active lower-limb inflammation and who do not have sickle cell disease.
✕Probably not a fit
Patients with sickle cell anemia, prior iatrogenic vascular changes in the lower limbs (such as stents or bypasses), active inflammation of the lower extremities, or those unable to attend outpatient sessions are unlikely to benefit or be eligible.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a randomized clinical trial comparing outpatient resistance training with real blood flow restriction (BFR) to resistance training with sham-BFR after anterior cruciate ligament reconstruction. Participants follow a sports-science controlled, low-load strength program with either external venous occlusion or a sham procedure, and outcomes include muscle mass regeneration, strength, and knee functional measures. The intervention builds on prior positive results of BFR used as prehabilitation in knee arthroplasty and applies the approach to post-ACL reconstruction rehabilitation. The trial is run at the Bonn Center for Outpatient Rehabilitation within the University Hospital Bonn and enrolls patients able to attend outpatient sessions.
Why it matters
Potential benefit: If successful, this approach could help patients regain muscle and strength faster using lower-load exercises, potentially improving recovery and knee function during rehab.
How similar studies have gone: Previous work from the same group showed positive effects of BFR as prehabilitation before knee arthroplasty and BFR has produced low-load strength gains similar to high-load training in other settings, though its use specifically after ACL reconstruction is less well established.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * ACL reconstruction * Ability to take part in an outpatient rehabilitation Exclusion Criteria: * Sickle Cell anemia * iatrogenic changes in the vessels of the lower limbs (stents, bypasses) * inflammation of the lower extremities
Where it's running
-
University Hospital Bonn
Bonn, North Rhine-Westphalia, Germany Recruiting
Study contacts
- Study coordinator: Alexander Franz, Dr. med., B.Sc.
- Email: alexander.franz@ukbonn.de
- Phone: +491703750718
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Conventional rehabilitation with or without digital therapy to restore quadriceps activation after ACL reconstruction
This trial tests whether adding a smartphone-based digital therapy to standard physiotherapy helps adults recovering from ACL reconstruction overcome quadriceps muscle inhibition.
-
Microbial Profile of the Knee Joint During ACL Surgery
This study tests whether advanced DNA sequencing can detect hidden knee infections or microbiome changes in people undergoing ACL reconstruction or ACL revision surgery.
-
Exercise with blood flow restriction for patients with complete ACL tears
This study is testing if exercising with blood flow restriction can help people with complete ACL tears recover better than just standard treatment alone.
-
Assessing soleus muscle strength in patients with ACL tears
This study is testing the strength of a muscle in the calf of people with ACL tears to see how it compares to their uninjured leg and to healthy volunteers.
-
Optimizing graft selection for ACL reconstruction
This study is testing which type of graft—quadriceps tendon, hamstring tendons, or patellar tendon—works best for helping young adults recover from their first ACL injury.
-
Comparing quadriceps tendon and hamstring autografts for ACL reconstruction in young patients
This study is testing whether using quadriceps tendon grafts instead of hamstring grafts for ACL surgery can lead to better recovery for young patients aged 10-18.
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.