目的比较生物型短柄与标准柄在侧卧位直接前方入路(direct anterior approach,DAA)全髋关节置换术(total hip arthroplasty,THA)治疗股骨头坏死(osteonecrosis of the femoral head,ONFH)的临床疗效。方法回顾性分析2019年1月至2021年3...目的比较生物型短柄与标准柄在侧卧位直接前方入路(direct anterior approach,DAA)全髋关节置换术(total hip arthroplasty,THA)治疗股骨头坏死(osteonecrosis of the femoral head,ONFH)的临床疗效。方法回顾性分析2019年1月至2021年3月西安交通大学附属红会医院收治的股骨头坏死患者145例,根据股骨柄假体类型分为两组。短柄组69例,男34例,女35例;平均年龄(59.16±8.86)岁。标准柄组76例,男35例,女41例;平均年龄(58.28±8.59)岁。比较两组的手术时间、切口长度、术中出血量,术前及术后第1、3、7天疼痛视觉模拟评分(visual analogue score,VAS),术前及术后1、3、6个月及末次随访髋关节Harris评分,术前及术后X线片上植入假体后髋关节偏心距、假体下沉、内外翻偏移。结果两组的切口长度差异无统计学意义(P>0.05);短柄组手术时间及术中出血量少于标准柄组(P<0.05)。两组术前及术后VAS评分差异无统计学意义(P>0.05)。两组术前髋关节Harris评分比较差异无统计学意义(P>0.05),术后1、3个月比较差异有统计学意义(P<0.05),而术后6个月及末次随访评分比较差异无统计学意义(P>0.05)。术后12个月随访影像学测量显示,短柄组有2例可见假体偏移>3°;标准柄组假体偏移角度均<3°。短柄组有3例假体下沉>3 mm;标准柄组有2例假体下沉>3 mm。两组所有病例测量双侧偏心距的差别均<4 mm。结论短柄髋关节假体在DDA下THA治疗ONFH相比于标准柄更具有优势,能够降低术中股骨侧的处理难度,缩短手术时间,减少术中出血,同时患者术后3个月内髋关节功能更好。展开更多
Most of data distribution mechanism in Opportunistic Networks is derived by Epidemic data distribution,and Epidemic data distribution means that when each node meets another node,it may copy its own messages and trans...Most of data distribution mechanism in Opportunistic Networks is derived by Epidemic data distribution,and Epidemic data distribution means that when each node meets another node,it may copy its own messages and transfer to another node.On the one hand,the copies improve the forwarding rate,and reduce the transmission delay.However,on the other hand,energy consumption increases and network survival time is reduced because the copies consume transmission resource.Therefore,copy number should be under control.In this paper,we first introduce the existing routing strategy based on Epidemic briefly,and present the Epidemic routing protocol analysis model and copy control mechanism based on the limited Epidemic in Opportunistic Networks.Then based on the limited copies scheme(LCS),we propose an energy balance scheme(EBS),the results show that EBS can improve the network survival time.展开更多
文摘目的比较生物型短柄与标准柄在侧卧位直接前方入路(direct anterior approach,DAA)全髋关节置换术(total hip arthroplasty,THA)治疗股骨头坏死(osteonecrosis of the femoral head,ONFH)的临床疗效。方法回顾性分析2019年1月至2021年3月西安交通大学附属红会医院收治的股骨头坏死患者145例,根据股骨柄假体类型分为两组。短柄组69例,男34例,女35例;平均年龄(59.16±8.86)岁。标准柄组76例,男35例,女41例;平均年龄(58.28±8.59)岁。比较两组的手术时间、切口长度、术中出血量,术前及术后第1、3、7天疼痛视觉模拟评分(visual analogue score,VAS),术前及术后1、3、6个月及末次随访髋关节Harris评分,术前及术后X线片上植入假体后髋关节偏心距、假体下沉、内外翻偏移。结果两组的切口长度差异无统计学意义(P>0.05);短柄组手术时间及术中出血量少于标准柄组(P<0.05)。两组术前及术后VAS评分差异无统计学意义(P>0.05)。两组术前髋关节Harris评分比较差异无统计学意义(P>0.05),术后1、3个月比较差异有统计学意义(P<0.05),而术后6个月及末次随访评分比较差异无统计学意义(P>0.05)。术后12个月随访影像学测量显示,短柄组有2例可见假体偏移>3°;标准柄组假体偏移角度均<3°。短柄组有3例假体下沉>3 mm;标准柄组有2例假体下沉>3 mm。两组所有病例测量双侧偏心距的差别均<4 mm。结论短柄髋关节假体在DDA下THA治疗ONFH相比于标准柄更具有优势,能够降低术中股骨侧的处理难度,缩短手术时间,减少术中出血,同时患者术后3个月内髋关节功能更好。
基金supported by the National Natural Science Foundation of China(61171097)Key Lab of Information Network Security, Ministry of Public Security(C14613)
文摘Most of data distribution mechanism in Opportunistic Networks is derived by Epidemic data distribution,and Epidemic data distribution means that when each node meets another node,it may copy its own messages and transfer to another node.On the one hand,the copies improve the forwarding rate,and reduce the transmission delay.However,on the other hand,energy consumption increases and network survival time is reduced because the copies consume transmission resource.Therefore,copy number should be under control.In this paper,we first introduce the existing routing strategy based on Epidemic briefly,and present the Epidemic routing protocol analysis model and copy control mechanism based on the limited Epidemic in Opportunistic Networks.Then based on the limited copies scheme(LCS),we propose an energy balance scheme(EBS),the results show that EBS can improve the network survival time.
