高山滑雪运动踝关节急性期损伤MRI表现

目的:探讨高山滑雪运动(AS)踝关节急性期损伤MRI特点.方法:搜集27例AS运动踝关节急性损伤患者(共29个踝关节损伤)作为实验组;随机选取30例普通外伤踝关节患者(共30个踝关节损伤)作为对照组.采用3.0T MRI和相控阵线圈进行踝关节扫描.由2名放射科主治医师评估膝关节骨、软骨、韧带、肌腱等损伤.结果:实验组多...

MRI findings of acute ankle injury in alpine skiing

Objective:To investigate the MRI features of acute ankle injury in alpine skiing(AS).Methods:Twenty-seven cases of alpine skiers with 29 ankle injuries were collected as the experimental group.A total of 30 patients with common ankle injuries were randomly selected as the control group.Ankle joint scan was performed on 3.0T MRI and phased-front loop.Bone marrow,cartilages,ligaments,tendons were evaluated by 2 radiologists.Results:In the experimental group,there were 29(100%)cases of multi-structure combined injury.In the control group,24(80.00%)patients were injured.In the experimental group,14 medial malleolus,12 lateral malleolus,12 tibial block,17 talus,15 calcaneus,13 scaphoid,and 14 cuboid were calculated as bone contusion/fracture,while in the control group,7,5,5,9,8,6,6,respectively.16 medial tibial pitch articular cartilage,15 lateral tibial articular cartilage,14 subtalar articular cartilage,12 talus canalis articular cartilage and 13 talus die articular cartilage were damaged,while in the control group,8,6,7,5,5,respectively.16 deltoid ligament,17 anterior talofibular ligament,13 posterior talofibular ligament,16 calcaneal ligament,15 inferior tibiofibular ligament and 12 inferior tibiofibular ligament were injured,while in the control group,8,9,6,9,7,5,respectively.4 Long hallux flexor tendons,15 after long flexor tendons,14 tibia muscle tendons,14 long peroneal muscle tendons,14 length thumb extensor tendons,13 long extensor tendons,14 tendons of the tibialis anterior muscle,15 Achilles tendons were injured in ankle joint,while in the control group,7,7,6,7,6,6,7,8,respectively.The differences of incidence between two groups were statistically significant(P<0.05).In the experimental group,the grade 0,Ⅰ,Ⅱ,Ⅲ,Ⅳlevel of articular cartilage injury were discovered in 33,16,75,10,11 respectively,while in the control group,119,12,7,6,6,respectively;the grade 0,Ⅰ,Ⅱ,Ⅲof ligament injury were confirmed in 68,58,31,17 respectively,while in the control group,124,31,12,13,respectively;the grade 0,Ⅰ,Ⅱ,Ⅲof tendon damage were found in 105,82,31,14 respectively,while in the control group,15,9,171,45,respectively.The degree of injury was statistically different between two groups(P<0.001).The experimental group common showed multiple anatomical sites and multiple bone contusions/fractures while the control group showed bone contusions/fractures in direct impact sits.Experimental group of articular cartilage is characterized gradeⅡor higher injury,while the control group cartilage damage grade is characterized gradeⅠ.Experimental group more manifested multiple joint ligament injury,in the majority with gradeⅡ;the control group is given priority to with a single ligament damage,in the majority with gradeⅠ.Tendon injuries often performed more gradeⅠdamage in experimental group,controls often presented a single gradeⅠdamage.Conclusion:The injury of ankle joint in skiing sports is the joint injury of bone marrow,cartilage,ligament and tendon.The correct understanding of the ankle injury mechanism and MRI manifestations of skiing is of great significance for early diagnosis and recovery of knee function.