[1]王金杰,俞倩丽,庄汝杰.新型支具对膝关节内侧间室应力的影响…[J].中医正骨,2017,29(12):19-22.
　WANG Jinjie,YU Qianli,ZHUANG Rujie.Effect of up-to-date orthosis on medial compartment stress of knee joint[J].The Journal of Traditional Chinese Orthopedics and Traumatology,2017,29(12):19-22.
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新型支具对膝关节内侧间室应力的影响…()
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《中医正骨》[ISSN:1001-6015/CN:41-1162/R]

卷:
第29卷
期数:
2017年12期
页码:
19-22
栏目:
基础研究
出版日期:
2017-12-20

文章信息/Info

Title:
Effect of up-to-date orthosis on medial compartment stress of knee joint
作者:
王金杰1; 俞倩丽1; 庄汝杰2
1.浙江中医药大学,浙江 杭州 310053; 2.浙江省中医院,浙江 杭州 310006
Author(s):
WANG Jinjie1; YU Qianli1; ZHUANG Rujie2
1.Zhejiang Chinese Medical University,Hangzhou 310053,Zhejiang,China 2.Zhejiang Provincial Hospital of Traditional Chinese Medicine,Hangzhou 310006,Zhejiang,China
关键词:
骨关节炎; 膝;  膝内翻;  膝内侧间室;  应力; 物理;  支具;  3D打印
Keywords:
Key words osteoarthritis; knee;  genu varum;  knee medial compartment;  stress;  mechanical;  orthosis;  3D printing
摘要:
目的:探讨新型支具对膝关节内侧间室应力的影响。方法:选取3具新鲜成年尸体,制作膝关节标本,于胫骨关节面下方2 cm处截骨,插入自制可调节胫骨外侧钢板固定截骨端后,将膝关节标本以直立位固定于实验台上,并将压力传感器探头置于膝关节内侧间室软骨面的中心区域; 通过调整自制钢板角度改变膝内翻角度,并利用压力传感器测量佩戴新型支具前后膝关节内侧间室的应力变化。结果:膝内翻6°、9°、12°、15°、18°、21°、24°、27°时,佩戴新型支具后膝关节标本内侧间室应力均低于佩戴新型支具前[(1.284±0.043)MPa,(1.788±0.033)MPa,t=16.863,P=0.003;(1.314±0.040)MPa,(2.129±0.108)MPa,t=20.017,P=0.002;(1.358±0.053)MPa,(2.443±0.053)MPa,t=59.425,P=0.000;(1.391±0.062)MPa,(2.895±0.056)MPa,t=103.804,P=0.000;(1.421±0.074)MPa,(3.245±0.155)MPa,t=38.912,P=0.001;(1.444±0.079)MPa,(3.035±0.085)MPa,t=367.308,P=0.000;(1.460±0.080)MPa,(2.581±0.142)MPa,t=28.382,P=0.001;(1.487±0.076)MPa,(2.172±0.157)MPa,t=13.972,P=0.005]; 膝内翻0°、3°、30°时,佩戴新型支具前后膝关节标本内侧间室应力比较,差异均无统计学意义[(1.199±0.068)MPa,(1.196±0.067)MPa,t=-5.500,P=0.032;(1.252±0.052)MPa,(1.375±0.035)MPa,t=6.594,P=0.022;(1.507±0.081)MPa,(1.864±0.208)MPa,t=4.726,P=0.042]。结论:当膝内翻小于30°时,新型膝关节支具可以降低膝关节内侧间室应力。
Abstract:
ABSTRACT Objective:To explore the effect of up-to-date orthosis on medial compartment stress of knee joint.Methods:Three fresh adult cadavers were selected to make the knee specimens.Osteotomy was performed on the knee specimens at 2 cm below the tibial articular surface,and the knee specimens were fixed on the bench in orthostatism after osteotomy sites were fixed with self-made adjustable lateral tibial steel plate.The probes of pressure sensor were placed into the central region of medial compartment cartilage surface of knee joint.The angles of genu varum were changed by adjusting the angles of self-made steel plate,and the stress changes of knee medial compartment were measured by using the pressure sensor after the up-to-date orthosis was used.Results:The medial compartment stress of knee specimens decreased after the up-to-date orthosis was used at genu varum angles of 6,9,12,15,18,21,24 and 27 degrees respectively(1.284+/-0.043 vs 1.788+/-0.033 MPa,t=16.863,P=0.003; 1.314+/-0.040 vs 2.129+/-0.108 MPa,t=20.017,P=0.002; 1.358+/-0.053 vs 2.443+/-0.053 MPa,t=59.425,P=0.000; 1.391+/-0.062 vs 2.895+/-0.056 MPa,t=103.804,P=0.000; 1.421+/-0.074 vs 3.245+/-0.155 MPa,t=38.912,P=0.001; 1.444+/-0.079 vs 3.035+/-0.085 MPa,t=367.308,P=0.000; 1.460+/-0.080 vs 2.581+/-0.142 MPa,t=28.382,P=0.001; 1.487+/-0.076 vs 2.172+/-0.157 MPa,t=13.972,P=0.005).There was no statistical difference in medial compartment stress of knee specimens between pre- and post-use of up-to-date orthosis at genu varum angles of 0,3 and 30 degrees respectively(1.199+/-0.068 vs 1.196+/-0.067 MPa,t=-5.500,P=0.032; 1.252+/-0.052 vs 1.375+/-0.035 MPa,t=6.594,P=0.022; 1.507+/-0.081 vs 1.864+/-0.208 MPa,t=4.726,P=0.042).Conclusion:The up-to-date knee orthosis can reduce the medial compartment stress of knee joint at the genu varum angle of <30 degrees.

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备注/Memo

备注/Memo:
基金项目:2014年度浙江省重大科技专项计划项目(2014C03038) 通讯作者:庄汝杰 E-mail:rujiezhuang@163.com
更新日期/Last Update: 2018-05-02