combined with sufentanil in elderly patients undergoing hip replacement.Methods:89 elderly patients with hip arthroplasty from July 2019 to September 2020 were randomly divided into experimental group and control grou...combined with sufentanil in elderly patients undergoing hip replacement.Methods:89 elderly patients with hip arthroplasty from July 2019 to September 2020 were randomly divided into experimental group and control group.The experimental group was anesthetized with light specific gravity ropivacaine combined with sufentanil.The control group was anesthetized with equal specific gravity ropivacaine to compare the effect of anesthesia and the incidence of adverse reactions.Results:there was no significant difference in sensory recovery time and motor recovery time between the experimental group and the control group(P>0.05),and the incidence of adverse reactions between the two groups was low.The sensory block time in the experimental group was shorter than that in the control group(PP>0.05).Conclusion:ropivacaine combined with sufentanil subarachnoid anesthesia is more effective in elderly patients undergoing hip arthroplasty,and the safety of the anesthesia scheme is higher,which will not lead to serious adverse reactions during operation.Moreover,the application of the anesthesia scheme can effectively improve the analgesic effect during and after operation,and the clinical application value is high.展开更多
The purpose of the present work is to construct a reaction board based on fiber Bragg gratings （FBGs） that could be used for estimation of the 2D coordinates of the projection of center of gravity （CG） of an objec...The purpose of the present work is to construct a reaction board based on fiber Bragg gratings （FBGs） that could be used for estimation of the 2D coordinates of the projection of center of gravity （CG） of an object. The apparatus is consisted of a rigid equilateral triangular board mounted on three supports at the vertices, two of which have cantilevers instrumented with FBGs. When an object of known weight is placed on the board, the bending strain of the cantilevers is measured by a proportional wavelength shift of the FBGs. Applying the equilibrium conditions of a rigid body and proper calibration procedures, the wavelength shift is used to estimate the vertical reaction forces and moments of force at the supports and the coordinates of the object＇s CG projection on the board. This method can be used on a regular basis to estimate the CG of the human body or objects with complex geometry and density distribution. An example is provided for the estimation of the CG projection coordinates of two orthopaedic femur bone models, one intact, and the other with a hip stem implant encased. The clinical implications of changing the normal CG location by means of a prosthesis have been discussed.展开更多
目的:观察膝关节骨性关节炎(KOA)患者髋外展肌等速肌力变化。方法:采用Biodex system 4对23例双侧KOA患者及14例正常对照者进行角速度为30°/s及60°/s的髋外展肌等速肌力测试,分别采用配对样本t检验及独立样本t检验比较KOA患...目的:观察膝关节骨性关节炎(KOA)患者髋外展肌等速肌力变化。方法:采用Biodex system 4对23例双侧KOA患者及14例正常对照者进行角速度为30°/s及60°/s的髋外展肌等速肌力测试,分别采用配对样本t检验及独立样本t检验比较KOA患者主患侧与对侧、KOA组主患侧与正常对照组髋外展肌等速肌力。结果:KOA组30°/s峰力矩主患侧显著小于对侧(1.15 vs 1.22Nm/kg,P=0.039),峰力矩均值、单次最佳做功主患侧亦显著小于对侧(P<0.05),总功、平均功率无显著性差异(P>0.05);60°/s峰力矩主患侧显著小于对侧(1.03 vs1.13Nm/kg,P=0.006),峰力矩均值、单次最佳做功、总功、平均功率主患侧亦显著小于对侧(P<0.05)。髋外展肌30°/s峰力矩均值、平均功率、单次最佳做功及总功KOA组主患侧显著小于正常对照组(P≤0.05);60°/s时峰力矩KOA组显著小于正常对照组(1.03 vs 1.25Nm/Kg,P=0.032),余观察指标两组无显著性差异(P>0.05)。结论:膝骨关节炎患者主患侧髋外展肌等速肌力峰力矩、做功能力、运动效率较对侧减弱。膝骨关节炎患者髋外展肌等速肌力峰力矩、做功能力、运动效率较正常对照组减弱。展开更多
文摘combined with sufentanil in elderly patients undergoing hip replacement.Methods:89 elderly patients with hip arthroplasty from July 2019 to September 2020 were randomly divided into experimental group and control group.The experimental group was anesthetized with light specific gravity ropivacaine combined with sufentanil.The control group was anesthetized with equal specific gravity ropivacaine to compare the effect of anesthesia and the incidence of adverse reactions.Results:there was no significant difference in sensory recovery time and motor recovery time between the experimental group and the control group(P>0.05),and the incidence of adverse reactions between the two groups was low.The sensory block time in the experimental group was shorter than that in the control group(PP>0.05).Conclusion:ropivacaine combined with sufentanil subarachnoid anesthesia is more effective in elderly patients undergoing hip arthroplasty,and the safety of the anesthesia scheme is higher,which will not lead to serious adverse reactions during operation.Moreover,the application of the anesthesia scheme can effectively improve the analgesic effect during and after operation,and the clinical application value is high.
文摘The purpose of the present work is to construct a reaction board based on fiber Bragg gratings （FBGs） that could be used for estimation of the 2D coordinates of the projection of center of gravity （CG） of an object. The apparatus is consisted of a rigid equilateral triangular board mounted on three supports at the vertices, two of which have cantilevers instrumented with FBGs. When an object of known weight is placed on the board, the bending strain of the cantilevers is measured by a proportional wavelength shift of the FBGs. Applying the equilibrium conditions of a rigid body and proper calibration procedures, the wavelength shift is used to estimate the vertical reaction forces and moments of force at the supports and the coordinates of the object＇s CG projection on the board. This method can be used on a regular basis to estimate the CG of the human body or objects with complex geometry and density distribution. An example is provided for the estimation of the CG projection coordinates of two orthopaedic femur bone models, one intact, and the other with a hip stem implant encased. The clinical implications of changing the normal CG location by means of a prosthesis have been discussed.
文摘目的:观察膝关节骨性关节炎(KOA)患者髋外展肌等速肌力变化。方法:采用Biodex system 4对23例双侧KOA患者及14例正常对照者进行角速度为30°/s及60°/s的髋外展肌等速肌力测试,分别采用配对样本t检验及独立样本t检验比较KOA患者主患侧与对侧、KOA组主患侧与正常对照组髋外展肌等速肌力。结果:KOA组30°/s峰力矩主患侧显著小于对侧(1.15 vs 1.22Nm/kg,P=0.039),峰力矩均值、单次最佳做功主患侧亦显著小于对侧(P<0.05),总功、平均功率无显著性差异(P>0.05);60°/s峰力矩主患侧显著小于对侧(1.03 vs1.13Nm/kg,P=0.006),峰力矩均值、单次最佳做功、总功、平均功率主患侧亦显著小于对侧(P<0.05)。髋外展肌30°/s峰力矩均值、平均功率、单次最佳做功及总功KOA组主患侧显著小于正常对照组(P≤0.05);60°/s时峰力矩KOA组显著小于正常对照组(1.03 vs 1.25Nm/Kg,P=0.032),余观察指标两组无显著性差异(P>0.05)。结论:膝骨关节炎患者主患侧髋外展肌等速肌力峰力矩、做功能力、运动效率较对侧减弱。膝骨关节炎患者髋外展肌等速肌力峰力矩、做功能力、运动效率较正常对照组减弱。
