Clinical trial Recruiting at 1 site Interventional Ages 12 to 18

Using blood flow restriction training to help adolescents recover after ACL surgery

Official title: The Impact of Blood Flow Restriction Training in Adolescents After ACL Reconstruction: A Randomized Controlled Trial

Run by Connecticut Children's Medical Center · NCT05754632 · Data updated 2026-11-12

This study is testing if combining blood flow restriction training with regular rehab helps teenagers recover better and faster after ACL surgery.

Quick facts

Study typeInterventional
Ages12 Years to 18 Years
SexAll
Enrollment40 (estimated)
SponsorConnecticut Children's Medical Center
Academic / other
Locations1 site (Farmington, Connecticut)
StatusRecruiting
StartedJune 8, 2023
Main results expectedJune 1, 2027
Study endsMay 1, 2029
Registry record updatedJanuary 7, 2026
Trial IDNCT05754632 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adolescents aged 12 to 18 who are active in sports and undergoing primary ACL reconstruction.

Probably not a fit

Patients with additional lower extremity injuries or previous knee surgeries 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 study evaluates the effectiveness of blood flow restriction training (BFRT) combined with standard rehabilitation for adolescents recovering from anterior cruciate ligament (ACL) reconstruction. A total of 40 participants aged 12 to 18 will be randomly assigned to either a BFRT-enhanced exercise group or a control group following standard rehabilitation protocols. The study aims to measure improvements in strength, muscle growth, and patient-reported outcomes following surgery. The primary outcomes include knee strength and symmetry, while secondary outcomes focus on muscle hypertrophy and overall recovery satisfaction.

Why it matters

Potential benefit: If successful, this approach could enhance recovery outcomes and improve strength and function in adolescents after ACL reconstruction.

How similar studies have gone: While BFRT has shown promise in adult populations, this specific application in adolescents is novel and has limited prior research.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Prior to surgery participated in \>50 hours/year of level I or II sports as defined by Noyes et al and planned to return to prior level.

Level I Sports (4-7 days/week) Jumping, hard pivoting, cutting (basketball, volleyball,football, soccer, gymnastics, skiing. wrestling)

* Level II sports (1-3 days/week) Jumping, hard pivoting, cutting (basketball, volleyball,football, soccer, gymnastics, skiing. wrestling)
* Completion of postoperative rehabilitation following standard protocols
* Orthopedic surgical intervention and physical therapy completed at Connecticut Children's.

Exclusion Criteria:

* An additional lower extremity injury at time of knee injury or previous surgical intervention on the knee (ipsilateral and contralateral)
* Multiple ligament ruptures or trauma
* Weight bearing restrictions for greater than 4 weeks after surgery due to concomitant pathology such as meniscal root/radial repair, chondral pathology, or multi-ligament pathology
* Follow-up surgical procedures including, but not limited to, post-operative arthrofibrosis Inability to attend regular physical therapy sessions (≥80% of patient treatment sessions and all assessment visits
* Contraindications to performing BFRT including known history of central or peripheral neurologic impairments, cardiac or metabolic condition or history of deep vein thrombosis (DVT).

Where it's running

  • Connecticut Children's Sports Physical Therapy
    Farmington, Connecticut, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Gait rehabilitation using biofeedback for knee injuries

    This study is testing if real-time feedback on walking can help younger people who had knee surgery recover better and avoid early signs of osteoarthritis.

    Recruiting University of North Carolina, Chapel Hill · Chapel Hill, North Carolina · NCT05848622

  • Using Vitamin D to Boost Quadricep Strength After ACL Injury

    This study is testing if taking Vitamin D3 can help young adults recovering from ACL surgery build stronger thigh muscles.

    Recruiting Phase 2 Chinese University of Hong Kong · Hong Kong · NCT05174611

  • Effects of Vibration on Knee Health After ACL Surgery

    This study is testing if adding vibration therapy to regular rehab can help people recovering from ACL surgery have better knee health and lower the chance of future injuries.

    Recruiting University of North Carolina, Chapel Hill · Chapel Hill, North Carolina and 1 other locations · NCT04875052

  • Knee cartilage repair registry data collection

    This registry collects real-world information from adults undergoing knee cartilage repair to see how different procedures perform over time.

    Recruiting at 4 sites Smith & Nephew, Inc. · Parker, Colorado and 5 other locations · NCT07786207

  • Perturbation Training vs Functional Activities after ACL Reconstruction

    This study tests whether perturbation training or task-oriented functional activities help people 18–45 with ACL reconstruction recover better than standard rehab.

    Recruiting Riphah International University · Lahore, Punjab Province · NCT07642752

  • Tracking recovery after arthroscopic shoulder and knee surgeries

    This will follow people having routine arthroscopic shoulder or knee surgery to see if patient characteristics, tear details, or surgical choices predict better recovery and function over two years.

    Recruiting Second Affiliated Hospital, Zhejiang University, School of Medicine · Hangzhou, Zhejiang · NCT07501013

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.