Clinical trial Recruiting at 1 site Interventional Ages 16 to 35

Effects of Vibration on Knee Health After ACL Surgery

Official title: The Effects of Vibratory Stimuli on Joint Health and Post-traumatic Osteoarthritis Risk Following Anterior Cruciate Ligament Injury

Run by University of North Carolina, Chapel Hill · NCT04875052 · Data updated 2026-11-12

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.

More Osteoarthritis, Knee trials

Quick facts

Study typeInterventional
Ages16 Years to 35 Years
SexAll
Enrollment114 (estimated)
SponsorUniversity of North Carolina, Chapel Hill
Academic / other
Locations2 sites (Chapel Hill, North Carolina and 1 other locations)
StatusRecruiting
StartedJanuary 11, 2021
Main results expectedAugust 2026
Study endsAugust 2026
Registry record updatedMay 31, 2025
Trial IDNCT04875052 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals aged 16 to 35 who have undergone unilateral primary ACL reconstruction with a specific type of graft.

Probably not a fit

Patients with a history of prior ACL injuries, knee surgeries, or certain contraindications will 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 evaluates the impact of vibration therapy on post-traumatic knee osteoarthritis risk and secondary ACL injury in individuals recovering from ACL reconstruction surgery. Participants will be randomly assigned to receive standard rehabilitation, standard rehabilitation with whole body vibration (WBV), or local muscle vibration (LMV). The study aims to assess various outcomes including quadriceps muscle function, gait biomechanics, patient-reported outcomes, and MRI indicators of knee joint health. The hypothesis is that vibration therapy will enhance recovery and reduce the risk of complications compared to standard rehabilitation alone.

Why it matters

Potential benefit: If successful, this study could lead to improved rehabilitation protocols that reduce the risk of knee osteoarthritis and secondary injuries in ACL reconstruction patients.

How similar studies have gone: While the use of vibration therapy in rehabilitation is promising, this specific approach to addressing post-traumatic knee osteoarthritis and ACL injury risk is novel and has not been extensively tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 16 to 35 years
* Unilateral, primary ACLR with bone-patellar tendon-bone autograft

Exclusion Criteria:

* History of prior ACL injury or revision ACLR
* History of prior knee surgery
* Requirement of multiple ligament surgery at time of ACLR
* Concomitant injuries or surgical procedures at the time of ACLR that would delay early post-operative weight bearing based on surgeon recommendations (e.g. lower extremity fracture, intra-articular fracture, microfracture procedure)
* Removal of more than 1/3 of the medial or lateral meniscus at the time of ACLR
* Articular cartilage damage greater than 3A on the International Cartilage Repair Society Criteria at the time of ACLR
* History of musculoskeletal injury to either leg in the 3 months prior to participation other than primary ACL injury
* Prior diagnosis of radiographic OA in any joint of the lower extremity
* History of neurological disorder (e.g. stroke, multiple sclerosis, etc.)
* Contraindications for MRI (e.g. extreme claustrophobia, cardiac pacemaker, cochlear implant, metal foreign bodies, aneurism clip, etc.)
* Pregnant or planning to become pregnant

Where it's running

  • MOTION Science Institute
    Chapel Hill, North Carolina, United States
    Recruiting
  • Womack Army Medical Center
    Chapel Hill, North Carolina, United States
    Not yet recruiting

Study contacts

  • Principal investigator: Troy Blackburn, PhD — University of North Carolina, Chapel Hill
  • Study coordinator: Troy Blackburn, PhD
  • Email: troyb@email.unc.edu
  • Phone: 919-843-2021

Similar studies

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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.