Study On The Correlation Between Anatomical Parameters Of Tibial Plateau And Non-contact Injury Of Anterior Cruciate Ligament

Objective:To investigate the correlation between individual parameters and ACL injury and whether it is gender specific by measuring the geometric parameters of the tibial plateau in patients with anterior cruciate ligament(ACL)injury and ACL intact.Methods:Forty patients with non-contact ACL injury were included in the study,including 19 males and 21 females.The control group consisted of 38 patients with simple meniscus injury,including 20 males and 18 females.All samples were combined with knee magnetic resonance imaging(MRI),medical records,surgical records,and telephone inquiries to identify the patient’s diagnosis and injury mechanisms.The lateral tibiofibular tilt angle,the medial humeral posterior tilt angle,the medial tibial plateau depth,the tibial plateau coronal tilt angle,and the ACL sacral sagittal stop width were measured on the MRI images.Analyze the correlation between the above parameters and ACL injury,and analyze whether there is gender difference.Results:There were no significant differences in gender,age,and injury side between the two groups(p>0.05).Compared with the control group,the lateral tibia tilt angle of the injury group(p=0.02)became larger,and the medial tibial plateau depth(p=0.012)and ACL tibial stop point width(p=0.015)became smaller,and the difference was statistically significant(p<0.05).The anatomical parameters of the tibial plateau in the male and female groups showed that compared with the male,the lateral dorsiflexion angle of the lateral tibia(p=0.027)and the medial tibiadorsiflexion angle(p=0.005)were larger,and the width of the ACL tibia(p=0.035)was smaller,and the difference was statistically significant(p<0.05).).Compared with the male population in the control group,the lateral tibia(p=0.024)and medial tibia dorsi(p=0.044)were higher in the control group.When the males in the injured group and the female participants in the injured group were compared,it was found that the lateral tibia(p=0.022)and medial tibiofibular angle(p=0.032)of the injured group were higher,and the width of the ACL tibia(p=0.034)was smaller.Compared with the female population in the control group,the lateral tibia tilt angle of the female group in the injured group(p=0.013)increased and the medial tibial plateau depth(p=0.032)and ACL stop width(p=0.023)decreased.Compared with the male population in the control group,the lateral tibiofibular angle of the male group in the injured group(p=0.011)increased and the medial tibial plateau depth(p=0.026)and ACL tibial stop width(p=0.039)decreased.Binary logistic regression analysis showed a posterior tilt angle of the lateral tibial plateau(OR=1.53 95% CI,1.12 – 2.08),medial tibial plateau depth(OR=0.21 95% CI:0.04-0.99),ACL tibial stop width(OR= 0.64 95% CI: 0.42-0.97)are important risk factors for ACL rupture.Conclusions:The greater lateral posterior tibial angle,the shallower medial tibial plateau depth,and the smaller ACL tibial stop are risk factors for non-contact ACL injury.Compared with men,women have a larger lateral tibia and a medial humeral posterior tilt angle,and a smaller ACL tibia.