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NCT Number: NCT06524869

Association Between Neuromuscular Parameters and Functional Assessment After ACL Reconstruction

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.

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Key information

Conditions

ACL Injury Anterior Cruciate Ligament Injuries Knee Injuries Leg Injuries Wounds and Injuries

Age range

18 year–40 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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)

Treatment and study plan

Isokinetic neuromuscular assessment

Diagnostic Test

All sports patients who had a muscle evaluation in addition to functional testing at 6-12 months after ACLR since March 2024

Primary outcomes

  1. Passive proprioceptive evaluation

    Time frame: 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.

  2. Strength

    Time frame: 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.

  3. Single Hop test

    Time frame: One measurement during the visit at 6 to 12 months after surgery

    Measurement of knee position during landing from a single leg hop task

  4. Single-leg landing task

    Time frame: One measurement during the visit at 6 to 12 months after surgery

    Measurement of knee position during landing from a 30-cm box

Secondary outcomes

  1. Single Hop for Distance

    Time frame: One measurement during the visit at 6 to 12 months after surgery

    The total distance is recorded (in cm)

  2. ACL-RSI questionnaire (Anterior Cruciate Ligament-Return to Sport after Injury)

    Time frame: 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

  3. Landing Error Scoring System (LESS)

    Time frame: 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.

Sponsors and collaborators

Lead sponsor

University Hospital, Caen

Other

Registry information

Official study title

Association of Strength and Proprioception Parameters With Qualitative Assessment of Functional Tasks After ACL Reconstruction

Acronym: KASTLAB

Important dates

Study start
2024
Primary completion
2024
Study completion
2024
First posted
Jul 29, 2024
Registry last updated
Jul 29, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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