中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (26): 3916-3922.doi: 10.3969/j.issn.2095-4344.2016.26.018

• 骨与关节图像与影像 bone and joint imaging • 上一篇    下一篇

基于磁共振技术确定股骨远端旋转参照轴线

吕国义,李贞旭,向 旭,李建灵,殷 洁   

  1. 南阳市中心医院核磁共振室,河南省南阳市 473000
  • 修回日期:2016-04-22 出版日期:2016-06-24 发布日期:2016-06-24
  • 通讯作者: 殷洁,主任医师,硕士生导师,南阳市中心医院核磁共振室,河南南阳市 473000
  • 作者简介:吕国义,男,1966年生,河南省方城县人,2003年华中科技大学同济医学院毕业,副主任技师,主要从事磁共振诊断与技术研究。

Distal femoral rotational axis reference method based on magnetic resonance technique

Lv Guo-yi, Li Zhen-xu, Xiang Xu, Li Jian-ling, Yin Jie   

  1. Magnetic Resonance Imaging Room, Nanyang City Center Hospital, Nanyang 473000, Henan Province, China
  • Revised:2016-04-22 Online:2016-06-24 Published:2016-06-24
  • Contact: Yin Jie, Chief physician, Master’s supervisor, Magnetic Resonance Imaging Room, Nanyang City Center Hospital, Nanyang 473000, Henan Province, China
  • About author:Lv Guo-yi, Associate chief technician, Magnetic Resonance Imaging Room, Nanyang City Center Hospital, Nanyang 473000, Henan Province, China

摘要:

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文题释义:
假体旋转对线:对于全膝关节置换的成功具有重要的意义,患者置换过程中如果未确定准确的假体旋转对线,将会影响置换成功率,且患者术后髌骨的功能及稳定性也会产生严重的影响,造成髌骨磨损、关节疼痛等,严重者甚至需要行膝关节翻修。因此,正确的了解股骨远端旋转轴的定位十分重要。
MRI技术确定股骨远端旋转参照轴线:近年来MRI技术在股骨远端旋转参照轴线确定中得到应用,该方法和其他方法相比优势较多,能够清晰的显示骨、关节软骨以及软组织的解剖结构、形态,获得不同切面的图像,并且MRI诊断时具有更高的分辨率。
 
摘要
背景:目前临床上对于假体在水平面上以及股骨与胫骨假体的旋转对线问题研究相对比较薄弱。传统股骨远端旋转轴线主要以外科经股骨上髁轴为主,但是由于患者差异性以及解剖和术中显示等原因,导致患者膝关节置换过程中轴线难以准确定位。
目的:探讨磁共振技术在股骨远端旋转参照轴线确定中的应用,为人工全膝关节置换术股骨假体旋转力线提供参考和依据。
方法:选取南阳市中心医院骨科2014年9月至2015年10月医院诊治的122例无膝关节疾病患者资料进行分析,采用磁共振技术测量外科经股骨上髁轴、临床经股骨上髁轴、前后轴以及股骨后髁轴;同时采用磁共振技术测量股骨后髁角、髁扭转角、后轴线垂线以及后髁轴线的夹角,每组数据测量3次,求取平均值,分析磁共振技术对股骨远端旋转参照轴线确定方法。
结果与结论:①比较各角度接近外科经股骨上髁轴的准确性:3°股骨后髁轴>临床经股骨上髁轴>前后轴垂线;②2名测量者测量的股骨后髁角差异无显著性意义(P > 0.05);第一测量者测量的髁扭转角、后轴线垂线以及后髁轴线的夹角显著低于第二测量者(P < 0.05);③结果提示,磁共振技术对于股骨远端旋转参照效果理想,能够准确测量髁扭转角、股骨后髁角、后轴线垂线以及后髁轴线的夹角等指标,且确定方法比较可靠,能够作为全膝关节置换股骨假体旋转对位参考轴线科学的确定方法。股骨远端截骨轴线除外科经股骨上髁轴外,3°股骨后髁轴准确性最高。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

ORCID: 0000-0001-6939-6005(吕国义)

关键词: 骨科植入物, 人工假体, 磁共振技术, 股骨远端, 旋转参照轴线, 人工全膝关节置换, 假体旋转力线, 股骨后髁轴, 确定方法

Abstract:

BACKGROUND: Problems regarding the prosthesis in the horizontal plane and the rotation of the femur and tibia prosthesis on line are relatively weak. The distal femoral rotation axis is mainly the transepicondylar axis. Due to patient differences as well as anatomy and intraoperative display, it is difficult to accurately locate the axis in the process of knee arthroplasty.

OBJECTIVE: To investigate application of magnetic resonance technique in determining the axis of rotation of the distal femur, to provide reference and basis for femoral rotational alignment during total knee arthroplasty.
METHODS: Data of 122 cases without knee joint disease, who were diagnosed and treated in the Department of Orthopedics of Nanyang City Center Hospital from September 2014 to October 2015, were analyzed. Magnetic resonance technique was used to measure femoral epicondyle axes (STEA), femoral epicondyle axes (CTEA), the anteroposterior axis (APL) and femoral shaft (PCL). Simultaneously, magnetic resonance technique was utilized to measure femoral ankle angle (PCA), ankle twist angle (CTA), axis vertical line and ankle axis angle (PAPA). Each data were tested three times, and the average value was calculatd. We analyzed the method of magnetic resonance technique to determine reference axis of distal femoral rotation. 
RESULTS AND CONCLUSION: (1) Accuracy of the angle close to surgical transepicondylar axis: 3° PCL> CTEA > APL vertical line. (2) No significant difference in PCA was detected in two sets of measurements (P > 0.05). CTA and PAPA parameters in the first measurement by magnetic resonance imaging diagnosis were significantly lower than the second measurement (P < 0.05). (3) Results indicate that magnetic resonance technology provides ideal reference for distal femoral rotation, can accurately measure the CTA, PCA, PAPA and other indicators. It is a more reliable determination method and can be used in scientific determination of femoral rotational alignment reference axis in total knee arthroplasty. Except STEA, the accuracy of 3° PCL is highest. 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Arthroplasty, Replacement, Knee, Prosthesis Implantation, Tissue Engineering

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