title: [Effect of snow sports on knee cartilage maturation in children and adolescent with MRI quantitative analysis Zhang].
abstract: Objective:To evaluate the effect of snow sports to the knee cartilage maturation of children and adolescent with quantitative analysis of 3.0 T MRI.Methods:Twenty children and adolescent who underwent snow sports training more than 6 months (11 males and 9 females) were recruited and named with sports group, and twenty children and adolescent who live regularly without any exercise (10 males and 10 females) were recruited as control group from June 2014 to June 2015.Each group was divided into subgroups according to their gender.Both groups were scanned by 3.0 T MR.According to the loading features of knee articular cartilage in snow sports, medial femoral condyle, lateral femoral condyle, medial tibial condyle and lateral tibial condyle were divided into subareas.T2values and cartilage thickness were measured in all areas.Results:The median ages of the sports group and control group were 14.2 and 13.6 years old, which showed no statistical difference between two groups.The BMI of the sports group and control group were 18.3 and 17.9 kg/m2,which showed no statistical difference between two groups.Both in sports group and control group, the thickness and T2values of all areas showed significant differences between man and women in each group (allP<0.05). The cartilage thickness of sports group was higher than control group (P<0.05). The T2values showed no statistical difference in anterior central, posterior central of femoral condyles and anterior, central areas of tibial condyles between sports group and control group(P≥0.05). The T2values of anterior part of posterior femur and posterior areas of tibial condyle in sports group was higher than control group (P≥0.05).Conclusion:Gender difference may be an important effect factor of cartilage thickness. Scientific snow sports training maybe has positive influence for cartilage maturation of children and adolescent.
authors.affiliation: Department of Radiology, China-Japan Union Hospital of Jilin University, Changchun 130033, China.
authors.forename: B T
authors.initials: BT
authors.lastname: Zhang
authors.forename: L
authors.initials: L
authors.lastname: Liu
authors.forename: J
authors.initials: J
authors.lastname: Zheng
authors.forename: Y M
authors.initials: YM
authors.lastname: Dai
authors.forename: S N
authors.initials: SN
authors.lastname: Yu
authors.forename: G F
authors.initials: GF
authors.lastname: Liu
authors.forename: L
authors.initials: L
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D002358:Cartilage, Articular; D004838:Epiphyses; D005269:Femur; D006801:Humans; D007719:Knee Joint; D008279:Magnetic Resonance Imaging; D038161:Snow Sports; D013977:Tibia