The Clinical Application of Machine Learning Models for Risk Analysis of Ramp Lesions in Anterior Cruciate Ligament Injuries

医学 前交叉韧带 前交叉韧带损伤 内侧半月板 接收机工作特性 内侧副韧带 外科 眼泪 外侧半月板 骨关节炎 内科学 病理 替代医学
作者
Yong‐Beom Park,Hyojoon Kim,Han-Jun Lee,Suk-Ho Baek,Il‐Youp Kwak,Seong Hwan Kim
出处
期刊:American Journal of Sports Medicine [SAGE Publishing]
卷期号:51 (1): 107-118 被引量:12
标识
DOI:10.1177/03635465221137875
摘要

Background: Peripheral tears of the posterior horn of the medial meniscus, known as “ramp lesions,” are commonly found in anterior cruciate ligament (ACL)–deficient knees but are frequently missed on routine evaluation. Purpose: To predict the presence of ramp lesions in ACL-deficient knees using machine learning methods with associated risk factors. Study Design: Cohort study (Diagnosis); Level of evidence, 2. Methods: This study included 362 patients who underwent ACL reconstruction between June 2010 and March 2019. The exclusion criteria were combined fractures and multiple ligament injuries, except for medial collateral ligament injuries. Patients were grouped according to the presence of ramp lesions on arthroscopic surgery. Binary logistic regression was used to analyze risk factors including age, sex, body mass index, time from injury to surgery (≥3 or <3 months), mechanism of injury (contact or noncontact), side-to-side laxity, pivot-shift grade, medial and lateral tibial/meniscal slope, location of bone contusion, mechanical axis angle, and lateral femoral condyle (LFC) ratio. The receiver operating characteristic curve and area under the curve were also evaluated. Results: Ramp lesions were identified in 112 patients (30.9%). The risk for ramp lesions increased with steeper medial tibial and meniscal slopes, higher knee laxity, and an increased LFC ratio. Comparing the final performance of all models, the random forest model yielded the best performance (area under the curve: 0.944), although there were no significant differences among the models ( P > .05). The cut-off values for the presence of ramp lesions on receiver operating characteristic analysis were as follows: medial tibial slope >5.5° ( P < .001), medial meniscal slope >5.0° ( P < .001), and LFC ratio >71.3% ( P = .033). Conclusion: Steep medial tibial and meniscal slopes, an increased LFC ratio, and higher knee rotatory laxity were observed risk factors for ramp lesions in patients with an ACL injury. The prediction model of this study could be used as a supplementary diagnostic tool for ramp lesions in ACL-injured knees. In general, care should be taken in patients with ramp lesions and its risk factors during ACL reconstruction.
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