ACL Injury
Conditions
Brief summary
The anterior cruciate ligament (ACL) injury is common in athletes aged 18 to 35. ACL reconstruction (ACLR) aims to restore knee stability in the process of returning to sports. Post-surgical rehabilitation focuses on optimizing biomechanical parameters, with neuromuscular and functional tests assessing muscle strength, proprioception, and dynamic stability. Isokinetic allows the measurement of muscle strength symmetry and proprioception, while the single-leg hop and landing tasks assess functional stability and are predictive of sports resumption and injury prevention. Despite progress, concerns remain about neuromuscular factors impacting knee stability, especially during landings, which can increase the risk of secondary ACL injuries. This study proposes examining knee strength and proprioception using isokinetic dynamometry, alongside biomechanical assessments from functional tests, to explore their relationship to biomechanical features during landings, at 6-to-12 months post-ACL reconstruction. The hypothesis is that better muscle strength and proprioception correlate with improved knee control during landing tasks.
Interventions
DIAGNOSTIC_TESTIsokinetic neuromuscular assessment
All sports patients who had a muscle evaluation in addition to functional testing at 6-12 months after ACLR since March 2024
Sponsors
University Hospital, Caen
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
No
Inclusion criteria
* Adult patients, aged 18-40, who have undergone a first ACL reconstruction more than 6 months ago and are being followed in a sports medicine care pathway * Affiliated with a health insurance plan * Information form: Non-objection to the use of data for research purposes
Exclusion criteria
* Previous ligament surgery of the lower limbs prior to ACL reconstruction * Complex ligament injury (lateral ligaments, posterior cruciate ligament) * Recent muscle injuries * History of injury to the uninjured knee * Pregnant woman * Neurological history with residual effects or taking medication that affects balance/coordination * Inability to perform a muscular assessment * Postoperative complications (deep vein thrombosis, sepsis, stiffness/arthrofibrosis)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Single-leg landing task | One measurement during the visit at 6 to 12 months after surgery | Measurement of knee position during landing from a 30-cm box |
| Passive proprioceptive evaluation | One measurement during the visit at 6 to 12 months after surgery | Measurement of knee proprioception by the passive repositioning technique (JPS, in degrees) on isokinetic dynamometer. |
| Strength | One measurement during the visit at 6 to 12 months after surgery | Measurement of knee extensors and flexors peak strength (in newton.meter, Nm) on isokinetic dynamometer. |
| Single Hop test | One measurement during the visit at 6 to 12 months after surgery | Measurement of knee position during landing from a single leg hop task |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| ACL-RSI questionnaire (Anterior Cruciate Ligament-Return to Sport after Injury) | One measurement during the visit at 6 to 12 months after surgery | The ACL-RSI measures the patient's understanding of his knee. It comprises 12 questions with a score of 1 to 10 for each |
| Landing Error Scoring System (LESS) | One measurement during the visit at 6 to 12 months after surgery | The LESS (Landing Error Scoring System) scale is a 13-item tool used to assess landing technique during a hop task. |
| Single Hop for Distance | One measurement during the visit at 6 to 12 months after surgery | The total distance is recorded (in cm) |
Countries
France
Outcome results
None listed