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Prevalence and Predictors of Concomitant Meniscal and Ligamentous Injuries Associated With ACL Surgery: An Analysis of 20 Years of ACL Reconstruction at a Tertiary Care Children's Hospital.
American Journal of Sports Medicine 2024 January
BACKGROUND: There is an increasing rate of procedures being performed for concomitant injuries during anterior cruciate ligament (ACL) surgery. Few studies have examined risk factors for these associated injuries in young patients.
HYPOTHESIS: There are patient-related factors predictive of concomitant knee pathology that differ between age-based cohorts.
STUDY DESIGN: Cross-sectional study; Level of evidence, 3.
METHODS: Natural language processing was used to extract clinical variables from available notes of patients undergoing ACL surgery between 2000 and 2020 at a single institution (5174 ACL surgeries; mean age, 17 ± 4 years; 53.1% female; accuracy, >98%). Patients were stratified to pediatric (5-13 years), adolescent (14-19 years), and young adult (20-35 years) cohorts. Logistic regression was used to determine predictors of concomitant injury to the menisci, medial collateral ligament (MCL), posterolateral corner (PLC), and posterior cruciate ligament (PCL).
RESULTS: Between 2000 and 2020, 54% of pediatric, 71% of adolescent, and 70% of adult patients had ≥1 concomitant soft tissue injury. In children and adolescents, increased age was consistently predictive of sustaining a concomitant injury ( P < .02). Female children had increased odds of concomitant medial meniscal injury, while female adults had decreased odds ( P ≤ .046). Adolescent and adult female patients had decreased odds of concomitant lateral meniscal injury ( P ≤ .027). Female children had increased odds of injury to the MCL ( P = .015), whereas female children and adolescents had decreased odds of PCL injury ( P ≤ .044). Adolescents undergoing revision ACL surgery had increased odds of meniscal injury ( P ≤ .001) and decreased odds of concomitant MCL injury ( P = .028). Increased body mass index (BMI) was associated with increased odds of concomitant medial meniscal injury in all cohorts ( P ≤ .041), lateral meniscal injury in adults ( P = .045), and PLC injury in children ( P = .016). Contact injuries were associated with increased odds of MCL injury in adolescents ( P = .017) and PLC injury in adolescents and adults ( P < .014).
CONCLUSION: These findings support the hypothesis, as there were multiple factors that significantly affected the risk of concomitant injuries that differed between cohorts. Increased age, BMI, and contact injury history were generally associated with increased odds of sustaining a concomitant injury, whereas female sex and revision ACL surgery had mixed effects. Further studies are essential to investigate the sex-based differences in risk for concomitant injuries and to develop tailored treatment plans that minimize the risk of secondary ACL injury.
HYPOTHESIS: There are patient-related factors predictive of concomitant knee pathology that differ between age-based cohorts.
STUDY DESIGN: Cross-sectional study; Level of evidence, 3.
METHODS: Natural language processing was used to extract clinical variables from available notes of patients undergoing ACL surgery between 2000 and 2020 at a single institution (5174 ACL surgeries; mean age, 17 ± 4 years; 53.1% female; accuracy, >98%). Patients were stratified to pediatric (5-13 years), adolescent (14-19 years), and young adult (20-35 years) cohorts. Logistic regression was used to determine predictors of concomitant injury to the menisci, medial collateral ligament (MCL), posterolateral corner (PLC), and posterior cruciate ligament (PCL).
RESULTS: Between 2000 and 2020, 54% of pediatric, 71% of adolescent, and 70% of adult patients had ≥1 concomitant soft tissue injury. In children and adolescents, increased age was consistently predictive of sustaining a concomitant injury ( P < .02). Female children had increased odds of concomitant medial meniscal injury, while female adults had decreased odds ( P ≤ .046). Adolescent and adult female patients had decreased odds of concomitant lateral meniscal injury ( P ≤ .027). Female children had increased odds of injury to the MCL ( P = .015), whereas female children and adolescents had decreased odds of PCL injury ( P ≤ .044). Adolescents undergoing revision ACL surgery had increased odds of meniscal injury ( P ≤ .001) and decreased odds of concomitant MCL injury ( P = .028). Increased body mass index (BMI) was associated with increased odds of concomitant medial meniscal injury in all cohorts ( P ≤ .041), lateral meniscal injury in adults ( P = .045), and PLC injury in children ( P = .016). Contact injuries were associated with increased odds of MCL injury in adolescents ( P = .017) and PLC injury in adolescents and adults ( P < .014).
CONCLUSION: These findings support the hypothesis, as there were multiple factors that significantly affected the risk of concomitant injuries that differed between cohorts. Increased age, BMI, and contact injury history were generally associated with increased odds of sustaining a concomitant injury, whereas female sex and revision ACL surgery had mixed effects. Further studies are essential to investigate the sex-based differences in risk for concomitant injuries and to develop tailored treatment plans that minimize the risk of secondary ACL injury.
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