目的研究记忆合金弓齿钉内固定联合复元活血汤治疗新鲜腕舟状骨骨折患者的疗效及对腕关节功能的影响。方法采用前瞻性研究,以医院2018年1月—2020年4月诊断并治疗的新鲜腕舟状骨骨折患者120例作为研究对象,采用信封法,将以上患者随机分...目的研究记忆合金弓齿钉内固定联合复元活血汤治疗新鲜腕舟状骨骨折患者的疗效及对腕关节功能的影响。方法采用前瞻性研究,以医院2018年1月—2020年4月诊断并治疗的新鲜腕舟状骨骨折患者120例作为研究对象,采用信封法,将以上患者随机分为观察组及对照组,每组60例,两组患者均采取记忆合金弓齿钉内固定治疗,观察组患者在此基础上联合采用复元活血汤进行治疗。比较两组患者的治疗效果、疼痛情况、腕关节功能、上肢功能评定量表(disabilities ofarm,shoulder and hand,DASH)评分以及不良反应之间的差异。结果观察组患者的治疗优良率(91.67%,55/60)显著高于对照组(78.33%,47/60),差异存在统计学意义(χ^(2)=4.182,P=0.041);治疗后,两组患者的视觉模拟评分法(visual analog scale,VAS)评分均显著降低,且观察组患者3 d、7 d VAS评分显著低于对照组(t=6.925,P=0.000;t=4.243,P=0.000),治疗4周后,观察组患者掌屈(t=30.828,P=0.000)、背伸(t=4.697,P=0.000)、桡偏(t=3.811,P=0.000)、尺偏(t=2.782,P=0.000)的活动范围显著高于对照组,观察组患者的DASH评分A部分(t=5.597,P=0.000)、B部分(t=9.193,P=0.000)、总分(t=5.176,P=0.000)均显著低于对照组,两组患者发生骨不连、伤口感染以及骨坏死情况之间的差异不存在统计学意义(P>0.05)。结论记忆合金弓齿钉内固定联合复元活血汤治疗新鲜腕舟状骨骨折,患者的腕关节功能恢复显著,疼痛情况下降,治疗效果显著。展开更多
In order to solve the problem of residual film pollution caused by large area of cotton mulched planting in Xinjiang,a strip type residual film recycling and baling machine was designed,which can complete mulching fil...In order to solve the problem of residual film pollution caused by large area of cotton mulched planting in Xinjiang,a strip type residual film recycling and baling machine was designed,which can complete mulching film picking up,impurities separation,baling and other operations.The picking up device,as the key part of residual film recycling machine,was designed and analyzed.The kinematics of the pick-up nail tooth was analyzed,and its motion equation,motion trajectory and the conditions for completing the film pick-up were determined.And the key parameters were determined by analyzing the conditions of no missing picking and the stress of the residual film.According to the Box-Benhnken test design principle,field experiments were carried out with the forward speed of machine,the pickup speed ratio and the number of auxiliary film removing mechanisms as the key experimental factors,and the residual film pickup rate,the cotton stalk content and the residual film winding rate as the operation performance indexes of the picking up device.The mathematical models between the experimental factors and indexes were established,and the effect of each factor was analyzed.Through multi-objective parameter optimization and field experiment,the optimal combination of operation parameters was obtained as follows:the forward speed of machine of 1.67 m/s,the pickup speed ratio of 1.13,and the number of auxiliary film removing mechanisms of 6.Under this parameter combination,the pickup rate of residual film was 88.9%,the cotton stalk content in recycled residual film of 3.9%,and the residual film winding rate of 1.5%.The absolute error with the theoretical value was less than 0.6%.The research results show that the picking up device has stable operation performance and good residual film recycling effect,which meets the design and practical operation requirements.展开更多
文摘目的研究记忆合金弓齿钉内固定联合复元活血汤治疗新鲜腕舟状骨骨折患者的疗效及对腕关节功能的影响。方法采用前瞻性研究,以医院2018年1月—2020年4月诊断并治疗的新鲜腕舟状骨骨折患者120例作为研究对象,采用信封法,将以上患者随机分为观察组及对照组,每组60例,两组患者均采取记忆合金弓齿钉内固定治疗,观察组患者在此基础上联合采用复元活血汤进行治疗。比较两组患者的治疗效果、疼痛情况、腕关节功能、上肢功能评定量表(disabilities ofarm,shoulder and hand,DASH)评分以及不良反应之间的差异。结果观察组患者的治疗优良率(91.67%,55/60)显著高于对照组(78.33%,47/60),差异存在统计学意义(χ^(2)=4.182,P=0.041);治疗后,两组患者的视觉模拟评分法(visual analog scale,VAS)评分均显著降低,且观察组患者3 d、7 d VAS评分显著低于对照组(t=6.925,P=0.000;t=4.243,P=0.000),治疗4周后,观察组患者掌屈(t=30.828,P=0.000)、背伸(t=4.697,P=0.000)、桡偏(t=3.811,P=0.000)、尺偏(t=2.782,P=0.000)的活动范围显著高于对照组,观察组患者的DASH评分A部分(t=5.597,P=0.000)、B部分(t=9.193,P=0.000)、总分(t=5.176,P=0.000)均显著低于对照组,两组患者发生骨不连、伤口感染以及骨坏死情况之间的差异不存在统计学意义(P>0.05)。结论记忆合金弓齿钉内固定联合复元活血汤治疗新鲜腕舟状骨骨折,患者的腕关节功能恢复显著,疼痛情况下降,治疗效果显著。
基金supported by the National Key Research and Development Program of China (Grant No.2020YFD1001004)China Agriculture Research System-Cotton (CARS-15-23).
文摘In order to solve the problem of residual film pollution caused by large area of cotton mulched planting in Xinjiang,a strip type residual film recycling and baling machine was designed,which can complete mulching film picking up,impurities separation,baling and other operations.The picking up device,as the key part of residual film recycling machine,was designed and analyzed.The kinematics of the pick-up nail tooth was analyzed,and its motion equation,motion trajectory and the conditions for completing the film pick-up were determined.And the key parameters were determined by analyzing the conditions of no missing picking and the stress of the residual film.According to the Box-Benhnken test design principle,field experiments were carried out with the forward speed of machine,the pickup speed ratio and the number of auxiliary film removing mechanisms as the key experimental factors,and the residual film pickup rate,the cotton stalk content and the residual film winding rate as the operation performance indexes of the picking up device.The mathematical models between the experimental factors and indexes were established,and the effect of each factor was analyzed.Through multi-objective parameter optimization and field experiment,the optimal combination of operation parameters was obtained as follows:the forward speed of machine of 1.67 m/s,the pickup speed ratio of 1.13,and the number of auxiliary film removing mechanisms of 6.Under this parameter combination,the pickup rate of residual film was 88.9%,the cotton stalk content in recycled residual film of 3.9%,and the residual film winding rate of 1.5%.The absolute error with the theoretical value was less than 0.6%.The research results show that the picking up device has stable operation performance and good residual film recycling effect,which meets the design and practical operation requirements.
