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Not yet recruiting NCT06720649

Benefits of Ballistic Tests After the Anterior Cruciate Ligament Surgery

No phase Interventional Anterior Cruciate Ligament Injuries Anterior Cruciate Ligament Rupture

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: isokinetic test, Ballistic test, K-STARTS test, Questionnaires.
Who it may be relevant to
Registry conditions: Anterior Cruciate Ligament Injuries, Anterior Cruciate Ligament Rupture. Basic parameters: from 18 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
France
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

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Official title

Benefits of Ballistic Tests in the Decision to Return to Sport After the Ruptured Anterior Cruciate Ligament Surgery

Overview

During physical activities, the time available to produce a force is infinitely shorter than the time required to reach maximal muscle capacity. Previous studies have observed that the time elapsed between ground contact and ACL rupture is on average 50-60 ms, suggesting that this is the time window available for any attempt at dynamic stabilization of the joint through muscle contraction. Sports movements include ballistic movements, defined as very fast movements whose objective is to accelerate a moving mass as much as possible so that it reaches a high speed in a very short time. This is the case for vertical jumps, running and most movements performed in physical and sporting activities. Thus; (1) isokinetic tests do not allow a rigorous analysis of the components related to the speed of the movement; (2) functional tests such as jumping, which only give a distance between one leg and the other, do not allow the calculation of precise and reproducible variables concerning the force and speed of the movement, in particular during the first milliseconds of the movement, and do not provide information on compensation phenomena. It is therefore interesting to use the ballistic tests developed to monitor the movements of athletes as a new possible indicator of the return to sport. The main objective of this study is to evaluate the performance of ballistic tests in predicting failure to return to physical activity 24 months after ACL surgery.

Interventions

  • Other isokinetic test
    Bilateral strength will be measured using a Contrex ® dynamometer equipped with an exercise table. Each subject will perform isokinetic tests of the right and left knee extensors and flexors. Subjects will be stabilized by straps during testing and the joint rotation axis will be aligned with the input shaft of the dynamometer.
  • Other Ballistic test
    ballistic squat jumps performed in the supine position on a frictionless sled at a resistance between 0% of body weight (BW)
  • Other K-STARTS test
    The K-STARTS (Knee Health Athletic Return To Sport) test brings together a set of 7 tests validated in the scientific literature to assess the control and neuromuscular capacities of the lower limb when performing dynamic movements as well as apprehension when resuming activity. Test in 30 minutes with physical exercises and questionnaire.
  • Other Questionnaires
    KOOS (Knee Injury and Osteoarthritis Outcome Score) Questionnaire

Primary outcome measures

  • Analysis of the kinetics of force waves produced at high speed during ballistic movement [Time frame: 24 Months]
Secondary outcome measures (2)
  • Return to physical activity via isokinetic test [Time frame: 24 Months]
  • Return to physical activity via the K-STARTS test [Time frame: 24 Months]

Eligibility criteria

Inclusion criteria

  • Adult patient (> 18 years),
  • Patient who has undergone ACL reconstruction of the hamstrings with or without associated extra-articular plastic surgery:
  • Isolated ACL sprain without injury to the collateral ligaments or the PCL,
  • ACL reconstruction without associated meniscal injury or with repaired or menisctomized meniscal injury,
  • Having to perform a K-STARTS test and an isokinetic test,
  • Having the Tegner score before the rupture.

Exclusion criteria

  • Patient with high cardio-respiratory risk,
  • Osteoarticular and neuromuscular traumatic sequelae of the lower limbs,
  • Degenerative neuromuscular diseases,
  • Connective Tissue and Collagen Disease (e.g. Marfan),
  • Follow-up of a medical treatment that may influence the neuro-muscular system (e.g., antidepressants, etc.) during the tests,
  • Pregnant, parturient or breastfeeding patient.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation
N/A
Model
Single group
Masking
Open label
Primary purpose
Other

Study locations

France · 1 center
  • Clinique Chantecler — Marseille

Identifiers

NCT: NCT06720649 · 2023-03 · ID-RCB number: 2024-A01538-39

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗