Anatomical Features Of Anterior Cruciate Ligament On MR In Children, Adolescents And Adults

Objective:Anterior cruciate ligament between the femur and tibia,up from the back of the lateral femoral condyle inside,in the bone in front of the uplift between the tibial condyle surface,prevent tibia forward the role of the previous studies show that analysis of Yorkshire pig ACL in the newborn group,the ACL sagittal Angle relative to the tibia platform 30,about 60 in 18 months of age group,during the whole growth change about 30 In this study,by comparing the anatomical characteristics of anterior cruciate ligament between children and adolescents and adults,the growth curve of anterior cruciate ligament in children and adolescents was drawn to provide a new clinical idea for the reconstruction of anterior cruciate ligament in children and adolescents Methods: 1.Select our hospital between December 2015 and March 2017,according to the international standard of age group(see appendix)in children and adolescents,a total of 70 people,by eliminating,common in children and adolescents of knee joint MRI48 example,19 cases of men,women,29 cases,the average age of 12.7±2.9 years old from adult knee MRI48 cases,22 cases of men and women in 26 cases,with an average age of 42.0±11.9 years old,children and adolescents and adults were measured anterior cruciate ligament in sagittal plane and tibial anterior cruciate ligament tibial and femoral Angle and dead point positionThe Angle between the anterior cruciate ligament and the tibia on the coronal plane and the position of the femoral insertion of the tibial insertion of the anterior cruciate ligament and the axial insertion of the femur.2.Children and adolescents and adults measured in the sagittal plane of anterior cruciate ligament and anterior cruciate ligament tibial and femoral Angle and check the position of the tibial check points,the coronary plane of anterior cruciate ligament with tibial Angle and anterior cruciate ligament tibial check points,the femur check the location of the data using SPSS22.0 statistical software processing,P < 0.05,said the difference was statistically significant.3.The measured data of children and adolescents anterior cruciate ligament were processed,and the growth curve of the shape and position of children and adolescents anterior cruciate ligament was drawn,and the growth and change rules were analyzed.Result: 1.The sagittal plane and femoral Angle of acl in children and adolescents were significantly lower than those in adults(P<0.05).2.The sagittal plane and tibial Angle of acl in children and adolescents were significantly lower than those in adults(P<0.001).3.The anterior cruciate ligament coronal tibial Angle in children and adolescents was significantly lower than that in adults(P<0.001).4.Child and adolescent way of anterior cruciate ligament tibial coronal ratio(coronary distance tibial anterior cruciate ligament check points on the inside of the distance and the ratio of the length of the tibia platform which the coronary plane distance of anterior cruciate ligament tibial medial relative distance),anterior cruciate ligament femoral shaft ratio(axial slice to cruciate ligament check point distance is the distance of the lateral femoral condyle femoral and femoral condyle after the attachment is the ratio of the shaft to cruciate ligament of the lateral femoral condyle femoral check point distance relative distance)were significantly lower than that of the adult group(P < 0.05).5.Pediatric group of anterior cruciate ligament tibial sagittal ratio(the sagittal plane of anterior cruciate ligament tibial medial check point distance of the distance and the ratio of the length of the tibia platform which the sagittal plane distance of anterior cruciate ligament tibial medial relative distance)of the anterior cruciate ligament femoral coronal ratio of anterior cruciate ligament(coronary surface check point distance is the distance of the lateral femoral condyle and tibia platform length ratio of the distance coronary anterior cruciate ligament on the surface of the lateral femoral condyle of the relative distance)between the way adults and no significant difference(P > 0.05).6.The growth curve showed that the Angle of anterior cruciate ligament in the sagittal plane and femur Angle and the Angle of tibia in the coronal plane and tibia in children and adolescents decreased compared with that in adults.In the adult group,the ratio of tibial coronal surface of anterior cruciate ligament increased compared with that of the child and adolescent group.In other words,during the development process,the tibial stop of anterior cruciate ligament in children moved laterally relative to the medial side of tibial plateau on the coronal surface.In the adult group,the femoral axial position ratio of acl increased compared with that of the child and adolescent group,that is,in the development process,the femoral stop of acl in children moved medial to the lateral condyle of femur in the axial position(P<0.05).Conclusions: The anterior cruciate ligament in children and adolescents is different from that in adults in shape and position.Children's anterior cruciate ligament has undergone a gradual change from low level to high straight,and the tibial stop relative to the medial side of the tibial plateau moves to the lateral side,and the femoral stop relative to the lateral condyle of the femur moves to the medial side.