摘要
目的 对比分析青少年与成人急性髌骨外侧脱位后内侧髌股韧带（MPFL）损伤的MRI特点.方法 分别对42例青少年和45例成人急性髌骨外侧脱位患者的MRI资料进行回顾性分析,87例患者均行常规MRI矢状面、冠状面和横断面T1 WI、T2WI、脂肪抑制FSE双回波序列扫描,分析MPFL的损伤特点,并应用x2检验比较青少年和成人MPFL各种损伤的发生率.结果 急性髌骨外侧脱位后,青少年组MPFL损伤发生率为97.6％ （41/42）,其中完全撕裂、部分撕裂发生率分别为57.1％ （24/42）、40.5％（17/42）；成人组对应的MPFL损伤发生率、完全撕裂发生率、部分撕裂发生率分别为100.0％ （45/45）、64.4％（29/45）、35.6％ （16/45）；2组间MPFL损伤的发生率差异均无统计学意义（x2值分别为1.084、0.486、0.223,P值均＞0.05）.青少年组MPFL股骨侧、髌骨侧、体部撕裂发生率分别为31.0％（13/42）、78.6％（33/42）和26.2％（11/42）,其中多发部位损伤发生率为33.3％ （14/42）；成人组对应的各发生率分别为64.4％（29/45）、40.0％（18/45）、15.6％（7/45）和15.6％ （7/45）,2组间比较MPFL股骨侧、髌骨侧撕裂发生率差异有统计学意义（x2值分别为9.759、13.324,P值均＜0.05）,体部撕裂发生率差异无统计学意义（x2=1.497,P＞0.05）.青少年组较成人组尽管多发部位损伤差异无统计学意义（x2=3.749,P＞0.05）,但青少年组更易伴发MPFL多发部位损伤.结论 青少年与成人比较,急性髌骨外侧脱位后MPFL损伤程度分布无差异,但在损伤部位分布上,二者具有显著差异,成人组损伤以股骨侧多见,其次为髌骨侧,而青少年组以髌骨侧多见,其次为股骨侧,青少年更易发生MPFL多发部位损伤.
Objective To compare and analyze MRI characteristics of medical patellofemoral ligament（MPFL） injury patterns in adolescents and adults after acute lateral patellar dislocation.Methods MR images of 42 adolescents and 45 adults after acute lateral patellar dislocation were retrospectively reviewed.Routine MR scanning was performed in axial,sagittal and coronal planes,including T1 WI,T2 WI and fat saturation sequence.The x2-tests were performed to analyze the MPFL injury patterns between adolescent group and adult group.Results The prevalence rate of MPFL injury was 97.6% （41/42） in adolescent group after acute lateral patellar dislocation,including 57.1% （24/42） of complete tear and 40.5% （17/42） of partial tear.The prevalence rate of MPFL injury was 100.0% （45/45） in adult group,including 64.4% （29/45） of complete tear and 35.6% （16/45） of partial tear.There were no statistical difference between adolescents and adults in prevalence rate of MPFL injury,complete MPFL tear,partial MPFL tear （x2 =1.084,0.486,0.223 ; P 〉 0.05）.The prevalence rate of MPFL injury at femoral attachment,patellar attachment and midsubstance were 31.0% （13/42）,78.6% （33/42） and 26.2% （11/42） respectively in adolescent group,whereas they were 64.4% （29/45）,40.0% （18/45） and 15.6% （7/45） respectively in adult group.It occurred at multiple sites in 33.3% （14/42） of adolescents,and in 15.6% （7/45） of adults.There were significant differences between adolescents and adults in the prevalence rate of MPFL tear at femoral attachments and patellar attachments （x2 =9.759,13.324 ; P 〈 0.05）,but there was no statistical difference at its midsubstance （x2 =1.497,P 〉 0.05）.Although not statistically significant （x2 =3.749,P 〉 0.05）,MPFL tear at multiple locations were seen more in adolescents than in adults （33.3% vs.15.6%）.Conclusion The injury degree and distribution of MPFL are similar in adolescents and adults after acute lateral patellar dislocation,but there is significant difference in the site of MPFL injury distribution between adolescents and adults.MPFL is most easily injured at femoral attachment,secondly at patellar attachment in adults,while MPFL is most easily injured at patellar attachment,secondly at femoral attachment in adolescents.Adolescents are more likely to have multiple-site MPFL injury than adults.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2013年第10期903-907,共5页
Chinese Journal of Radiology
关键词
髌骨脱位
髌韧带
磁共振成像
Patellar dislocation
Patellar ligament
Magnetic resonance imaging
