TT-TG距离在诊断髌骨不稳中的应用  

Application discussion of TT-TG distance on diagnosis of patellar instability

作　　者：张瀚元[1] 徐斌[1] 徐洪港[1] 

机构地区：[1]安徽医科大学第一附属医院骨科,合肥230022

出　　处：《安徽医科大学学报》2013年第10期1275-1277,共3页Acta Universitatis Medicinalis Anhui

基　　金：安徽省自然科学基金(编号:1208085MH157)

摘　　要：选择髌骨不稳患者20例(研究组)及相对正常者20例(对照组),通过MRI获取胫骨结节最前点到股骨后髁切线的垂线以及股骨滑车最深处到股骨后髁切线的垂线,测量两垂线间的距离即胫骨结节股骨滑车沟(TT-TG)距离。研究组TT-TG距离为(15.470±2.556)mm,对照组TT-TG距离为(11.840±2.171)mm,两组间比较差异有统计学意义(P<0.01)。说明TT-TG距离在髌骨不稳患者及正常个体间的差异有显著性,其距离增大在指导临床诊断髌骨关节不稳有重要意义。20 patients with patellar instability and 20 patients with normal knee were investigated. And MRI was used to investigate the TT-TG distance. The first transverse craniocaudal image that depicted a complete cartilaginous trochlea. was used to determine the deepest point within the trochlear groove. A line was drawn through the deepest point of the trochlear groove perpendicular to the posterior condyle tangent. A second line was drawn parallel to the trochlear line through the most anterior portion of the tibial tubercle. The distance between the 2 lines represented the TT-TG distance. The TT-TG distance of study group was （ 15.470 ±2. 556） mm. The TT-TG distance of control group was （11. 840 ±2. 171 ） ram. The test showed a significant difference between the two mean values （ P 〈 0. 05 ）. The mean values of study group and control group have a significant difference. And the increased TT- TG distance shows a very good value on the diagnosis of patellar instability.

关 键 词：膝关节 髌股关节病 髌骨脱位 TT—TG 影像学 

分 类 号：R684.7[医药卫生—骨科学]