Risk Factors Analysis of Tear and Displacement of the Posterior Horn Root of the Medial Meniscus of the Knee Joint
Objective:To explore the risk factors of tear and displacement of the posterior horn root of the medial meniscus of the knee joint.Methods:Clinical data of 300 patients with posterior heel tear of the medial meniscus of the knee joint who were treated from July 2021 to July 2023 were collected.They were divided into observation group and control group based on the degree of displacement.The gender,age,body mass index,course of disease,injury site,posterior inclination angle of the medial tibial plateau,absolute and relative prolapse rate of the meniscus,degree of joint cartilage injury single factor comparative analysis was conducted on joint effusion and bone marrow edema,and statistically significant indicators were included in the multivariate logistic regression equation to analyze the risk factors for their occurrence.Results:Uni-variate analysis found that the absolute protrusion value((4.37±0.87)mm)in the observation group was higher than that in the control group((3.69±0.77)mm)(P＜0.05),the relative protrusion rate(31.45％±8.46％)in the observa-tion group was higher than that in the control group(22.81％±9.53％)(P＜0.05),and the posterior inclination angle of the medial tibial plateau(5.43°±1.82°)in the observation group was higher than that in the control group(4.86°±1.91°)(P＜0.05).Comparative analysis between the two groups found that age,body mass index,there was a signifi-cant statistical difference(P＜0.05)in the degree of damage to the medial tibial plateau cartilage between the two groups,but there was no statistically significant difference(P＞0.05)in terms of gender,disease course,injury site,joint effusion,degree of damage to the medial femoral condyle carti-lage,bone marrow edema of the medial femoral condyle,and bone marrow edema of the medial tibial plateau.Multivariate logistic regression analysis found that absolute prolapse value(OR=2.205,P=0.019),relative prolapse rate(OR=0.914,P=0.024),and medial tibial plateau posterior inclination angle(OR=1.911,P=0.019)were risk factors for me-dial meniscus posterior angle root tear,while age,body mass index,medial tibial plateau cartilage injury,and other factors were not influencing factors.Conclusion:The absolute and relative prolapse values of the meniscus,as well as the increase in the posterior inclination angle of the tibial plateau,are risk factors for the root tear displacement of the posterior horn of the medial meniscus.The measurement of tibial plateau tilt angle has a high detection rate and sensitivity in diagnosis,and patients with displacement have more severe meniscus prolapse and joint cartilage damage.
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