Influence of Injury to the Kaplan Fibers in Adult and Pediatric Patients With ACL Injury

Study Overview
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Brief Summary
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The goal of this [type of study: observational study] is to [detect concomitant KF and ALL injury in knees with ACL injury using MRI in both adult and pediatric patients and compare the effect of KF injury and multiple risk factors (concomitant injury to the ALL, medial collateral ligament [MCL], or anterior, central, or posterior part of the medial or lateral meniscus) on anterolateral rotatory laxity as measured by the pivot-shift test in a clinical setting.]. The main question [s] it aims to answer are: [Does the main risk factor for a high-grade pivot shift after acute ACL injury differ between pediatric patients and adults?] [Does Concomitant KF injury significantly affect the pivot-shift phenomenon in pediatric patients with acute ACL injury?] Researchers will compare [71 pediatric patients and 469 adults] to see if [main risk factor for a high-grade pivot shift after acute ACL injury differs between pediatric patients and adults?].

Official Title
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Influence of Injury to the Kaplan Fibers and Anterolateral Ligament on Anterolateral Rotatory Knee Laxity in Adult and Pediatric Patients With Anterior Cruciate Ligament Injury: A Retrospective Cohort Study

Conditions
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ACL-injury

Intervention / Treatment
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* Other: Age


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: unilateral acute primary ACL tear, considered when the patient reported knee injury occurring less than 2 weeks before the examination; bone bruising on the femoral condyles and tibial plateau identiﬁed on MRI. Exclusion Criteria: concomitant ligament (posterior cruciate ligament and/or posterolateral complex) procedures or realignment procedures; contralateral knee injury; previous injury or surgery affecting the ipsilateral knee; insufficient data from the electronic medical record system; lack of KF visualization on MRI.
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Other: Age|The retrospective study included 540 patients with primary ACL tears (71 pediatric patients and 469 adults) whose MRI examination and pivot-shift test were conducted within 14 days after injury. To detect concomitant KF and ALL injury in knees with ACL injury using MRI in both adult and pediatric patients and compare the effect of KF injury and multiple risk factors on anterolateral rotatory laxity as measured by the pivot-shift test in a clinical setting.|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| KF injury | concomitant KF injury or not | 3 years | 
| ALL injury | concomitant ALL injury or not | 3 years | 
| MCL injury | concomitant MCL injury or not | 3 years | 
| Medial meniscus injury | concomitant anterior, central, or posterior part of medial meniscus injury or not | 3 years | 
| Lateral meniscus | concomitant anterior, central, or posterior part of lateral meniscus injury or not | 3 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Meniscal injury, Rotatory instability, Kaplan fiber injury, Anterolateral ligament, Magnetic resonance imaging, Anterior cruciate ligament