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Muscle Function Following Anterior Cruciate Ligament Reconstruction: Impaired Power Output in Physically Active Individuals

Muscle Function Following Anterior Cruciate Ligament Reconstruction: Impaired Power Output in Physically Active Individuals

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07765173
Acronym
ReGAIN
Enrollment
110
Registered
2026-08-14
Start date
2026-06-08
Completion date
2030-06-08
Last updated
2026-08-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

ACL Surgery

Keywords

assessment, recovery, cruciate ligament, surgery

Brief summary

The goal of this clinical trial is to to determine the extent of the association between objective changes in the muscle function of the knee extensors (strength and power) and the function reported by the patient following ACL reconstruction surgery. The main questions it aims to answer is: \- Pre- and post-operative (6 months) changes in maximum knee extensor strength following ACL reconstruction, correlated with the IKDC-SKF score.

Detailed description

Before surgery : * The patient will undergo a series of assessment tests, including: * An assessment of the force-velocity and power-velocity relationships for each leg during a cycling task * An assessment of unilateral force-velocity and power-velocity relationships during a knee extension task * An assessment of maximum strength and explosive strength in isometric (static) mode of the knee extensors. * A questionnaire-based assessment of IKDC-SKF scores. Evaluations will be repeated at 3 and 6 month after surgery ; Patients will be monitored for up to 24 months following their surgery

Interventions

OTHERassessment

* Assessment of force-velocity and power-velocity relationships in each leg during a cycling task * Assessment of unilateral force-velocity and power-velocity relationships during a knee extension task * Assessment of maximum force and explosive force in isometric (static) conditions of the knee extensors. * Measurement of scores using questionnaires (IKDC-SKF).

Sponsors

Centre Hospitalier Metropole Savoie
Lead SponsorOTHER
Université Savoie Mont Blanc
CollaboratorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Patients requiring isolated or complex ACL reconstruction (combined with a meniscal injury) * Patients who are physically active (Tegner score ≥ 4) and wish to resume such activity. * Patients with no history of surgery on the ipsilateral knee (i.e., native knee). * Patients able to comply with the study procedures * Patients who have given their free and informed written consent, having been informed of the purpose of the study, its procedure and its risks. * Be affiliated to a social security scheme.

Exclusion criteria

* Patient with comprehension difficulties * Recurrent rupture of the ipsilateral ACL * Multi-ligament injuries (i.e., injury to the medial collateral ligament, lateral collateral ligament or posterior cruciate ligament)

Design outcomes

Primary

MeasureTime frameDescription
Correlation of maximum knee extension strength to IKDC-SKF scores6 monthRelationship (r coefficient) between 0-6 month delta of maximum knee extension strength measurements and International Knee Documentation Commitee-SKF scores (100: no limitation)

Secondary

MeasureTime frameDescription
Peri-operatory trajectory of maximal dynamic force0, 3 and 6 monthTrajectory of evolution of F0 (maximal dynamic force) between baseline, 3 and 6 months, compared between legs (linear mixed effect model).
Peri-operatory trajectory of maximal contraction velocity0, 3 and 6 monthTrajectory of evolution of V0 (maximal contraction velocity) between baseline, 3 and 6 months, compared between legs (linear mixed effect model).
Peri-operatory trajectory of rate of force development0, 3 and 6 monthTrajectory of evolution of rate of force development between baseline, 3 and 6 months, compared between legs (linear mixed effect model).
Peri-operatory trajectory of maximal isometric force0, 3 and 6 monthTrajectory of evolution of maximal isometric force (Fmax) between baseline, 3 and 6 months, compared between legs (linear mixed effect model).
Peri-operatory trajectory of maximal dynamic force during cycling0, 3 and 6 monthTrajectory of evolution of maximal dynamic force (F0) during cycling between baseline, 3 and 6 months (linear mixed effect model, one fixed factor).
Peri-operatory trajectory of maximal contraction velocity during cycling0, 3 and 6 monthTrajectory of evolution of maximal contraction velocity (V0) during cycling between baseline, 3 and 6 months (linear mixed effect model, one fixed factor).
Determinants of fonctional prognosis0, 3 and 24 monthMultivariate analysis including the IKDC-SKF score at 24 months as dependant variable and, as predictors : 1. the 0-3 month delta of V0, F0, RFD and Fmax during knee extension on the operated leg. 2. the severity of the lesion (presence of associated lesions) 3. the presence of a pre-operatory rehabilitation.

Countries

France

Contacts

CONTACTleo blervaque
leo.blervaque@ch-metropole-savoie.fr04.79.96.58.13

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 15, 2026