Neuromuscular Profiles After Anterior Cruciate Ligament Reconstruction

The NEURO-ACL-ISOEMG study is an observational, cross-sectional, exploratory study conducted in patients between 4 and 12 months after anterior cruciate ligament (ACL) reconstruction. The primary objective is to describe the joint distribution of isokinetic muscle strength and surface electromyographic (sEMG) activation parameters of the quadriceps and hamstrings in order to explore different neuromuscular profiles under clinical conditions. The study combines data from the routine functional assessment, including isokinetic strength measurements and a single-leg hop test, with surface electromyography and patient-reported questionnaires assessing knee self-efficacy, kinesiophobia, symptoms, and knee function.

Inclusion Criteria: * Anterior cruciate ligament (ACL) reconstruction. * Postoperative period between 4 and 12 months. * Age 18 years or older. * Affiliation with or beneficiary of a social security scheme. * Ability to understand the study information and to express non-opposition to participation. Exclusion Criteria: * Persons under guardianship, curatorship, or another legal protection measure. * Any condition preventing safe performance of isokinetic testing, including significant pain, significant joint effusion, substantial limitation of joint range of motion, clinical knee instability, or an ongoing postoperative complication. * Opposition to participation in the study.