CompletedNot Applicable

Hamstring Stiffness After Anterior Cruciate Ligament Reconstruction

France135 participantsStarted 2017-01-01

Plain-language summary

The role of hamstring has been studied in anterior cruciate ligament (ACL) injury prevention, mainly to counteract the anterior tibial translation , especially when contracting eccentrically, but also with passive stiffness. However, little is known about the passive hamstring stiffness after ACL reconstruction (ACLR). The primary objective of this study is to evaluate the passive stiffness of hamstring muscles after ACLR by using an isokinetic device. Secondary, we aimed to test the individual and surgical characteristics associated with hamstring stiffness and the impact of hamstring stiffness on RTS and knee re-injury. The hypotheses are that hamstring stiffness will be lower in the ACLR leg compared to the uninjured leg and to healthy individuals. Also, we hypothesized that hamstring stiffness will be lower after hamstring autograft compared to patellar tendon autograft and will increase progressively after ACLR to be symmetrical at the time for RTS. Also, we hypothesized that hamstring stiffness could be associated with better outcomes at RTS (RTS at same level and lower re-injury rates)

Who can participate

Age range

16 Years – 50 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Patients who have had an ACL reconstruction surgery (isolated or associated with other meniscal or ligamentary surgery) * Patient included in the sport medicine follow-up protocole with intermediate and final isokinetic muscular assessment at 4 months and 8 mnths after surgery respectively * Patient who received the information form Exclusion Criteria: * Patient who did not participate in all follow-up consultations and isokinetic muscular assessments * Cognitive or sensory impairment making it impossible to understand the information form * Neurological, traumatic or osteoarticular history responsible for muscle imbalance prior to surgery * Previous severe injury on the ipsilateral or contralateral knee * Recent muscle damage * ACL reinjury ( graft failure) * Patient with genu flexum, or constant flexed knee at 3 months after surgery * Informed consent not obtained

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Change in passive hamstring stiffness

Timeframe: ACLR group: Two evaluations on both injured and healthy knees: (1) 4 months after surgery and (2) 8 months after surgery; Control group:one evaluation at a single point in time through study completion (an average of one year)

Change in Strength

Trial details

NCT IDNCT05264597

SponsorUniversity Hospital, Caen

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2020-02-01

View on ClinicalTrials.gov More ACL Injury trials