Objective:This study aimed to explore the clinical efficiency of an improved transosseous pullout suture technique for arthroscopic repair of a meniscus root tear.Methods:From January 2017 to January 2021,53 patients ...Objective:This study aimed to explore the clinical efficiency of an improved transosseous pullout suture technique for arthroscopic repair of a meniscus root tear.Methods:From January 2017 to January 2021,53 patients with posterior meniscus root tears combined with anterior cruciate ligament(ACL)and/or posterior cruciate ligament(PCL)tears were collected.Totally,in 29 patients(group A),the 2.0 mm modified pullout tunnel method was used to suture the posterior meniscus root,while 24 patients(group B)were treated with the traditional 4.5 mm pullout tunnel method.In group A,20 patients had lateral meniscus posterior root(LMPR)combined with ACL tears,5 patients had LMPR combined with ACL and PCL tears,and 4 patients had medial meniscus posterior root(MMPR)combined with ACL tears.In group B,19 patients had LMPR combined with ACL tears,3 patients had LMPR combined with ACL and PCL tears,and 2 patients had MMPR combined with ACL tears.The improvement of the Lysholm and VAS scores and the incidence of complications in group A and group B before the operation,1 month and 3 months after the operation,and after the final follow-up were compared.Results:Preoperative Lysholm score was 26.0±5.6 in group A and 26.7±5.8 in group B(P>0.05).One-month postoperative Lysholm score was 66.5±5.7 in group A and 54.3±2.4 in group B(P<0.001).Three-month postoperative Lysholm score was 81.1±7.2 in group A and 73.2±9.7 in group B(P<0.05).Lysholm scores after the final follow-up was 90.3±5.6 in group A and 90.0±5.0 in group B(P>0.05).Preoperative VAS score was 6.3±1.4 in group A and 6.3±1.2 in group B(P>0.05).One-month postoperative VAS score was 1.8±0.7 in group A and 2.4±0.9 in group B(P<0.05).Three-month postoperative VAS score was 0.7±0.6 in group A and 0.8±0.6 in group B(P>0.05).VAS score after the final follow-up was 0.2±0.4 in group A and 0.3±0.5 in group B(P>0.05).Conclusion:The improved transosseous pullout suture technique using a smaller 2.0 mm bone tunnel can virtually eliminate the risk of conflict with other bone tunnels and facilitate the management of bone tunnels in multiple ligament injuries,while also diminishing suture abrasion caused by the windshield wiper effect.The technique achieves good clinical efficacy.展开更多
为了实现航空风挡雨刷系统的精准定位控制,同时具备小型化和高可靠的特点,设计了一种基于SOC(System on Chip)片上系统的风挡雨刷控制系统。该风挡雨刷控制系统采用嵌入ARM处理器内核的SOC芯片作为主控制单元,通过PWM(Pulse width modul...为了实现航空风挡雨刷系统的精准定位控制,同时具备小型化和高可靠的特点,设计了一种基于SOC(System on Chip)片上系统的风挡雨刷控制系统。该风挡雨刷控制系统采用嵌入ARM处理器内核的SOC芯片作为主控制单元,通过PWM(Pulse width modulation)脉宽调制控制雨刷电机的高、低速调节控制,同时通过对冲洗泵的工作状态进行控制,实现风挡玻璃的冲洗功能。该风挡雨刷控制系统性能稳定、控制效果良好,达到了预期的系统控制要求。展开更多
There are about 25 factories specialized in production of windshield wiper in China, reaching total output of nearly 1.9 million sets in 1993. Three of them are of strong production capacity. They are VALEO Wenling Au...There are about 25 factories specialized in production of windshield wiper in China, reaching total output of nearly 1.9 million sets in 1993. Three of them are of strong production capacity. They are VALEO Wenling Auto Parts & Accessories Co. Ltd., Shanghai Industry Traffic Electrical Apparatus Co. Ltd.,展开更多
基金supported by the Natural Science Foundation of Hubei Province(No.2018CFC832).
文摘Objective:This study aimed to explore the clinical efficiency of an improved transosseous pullout suture technique for arthroscopic repair of a meniscus root tear.Methods:From January 2017 to January 2021,53 patients with posterior meniscus root tears combined with anterior cruciate ligament(ACL)and/or posterior cruciate ligament(PCL)tears were collected.Totally,in 29 patients(group A),the 2.0 mm modified pullout tunnel method was used to suture the posterior meniscus root,while 24 patients(group B)were treated with the traditional 4.5 mm pullout tunnel method.In group A,20 patients had lateral meniscus posterior root(LMPR)combined with ACL tears,5 patients had LMPR combined with ACL and PCL tears,and 4 patients had medial meniscus posterior root(MMPR)combined with ACL tears.In group B,19 patients had LMPR combined with ACL tears,3 patients had LMPR combined with ACL and PCL tears,and 2 patients had MMPR combined with ACL tears.The improvement of the Lysholm and VAS scores and the incidence of complications in group A and group B before the operation,1 month and 3 months after the operation,and after the final follow-up were compared.Results:Preoperative Lysholm score was 26.0±5.6 in group A and 26.7±5.8 in group B(P>0.05).One-month postoperative Lysholm score was 66.5±5.7 in group A and 54.3±2.4 in group B(P<0.001).Three-month postoperative Lysholm score was 81.1±7.2 in group A and 73.2±9.7 in group B(P<0.05).Lysholm scores after the final follow-up was 90.3±5.6 in group A and 90.0±5.0 in group B(P>0.05).Preoperative VAS score was 6.3±1.4 in group A and 6.3±1.2 in group B(P>0.05).One-month postoperative VAS score was 1.8±0.7 in group A and 2.4±0.9 in group B(P<0.05).Three-month postoperative VAS score was 0.7±0.6 in group A and 0.8±0.6 in group B(P>0.05).VAS score after the final follow-up was 0.2±0.4 in group A and 0.3±0.5 in group B(P>0.05).Conclusion:The improved transosseous pullout suture technique using a smaller 2.0 mm bone tunnel can virtually eliminate the risk of conflict with other bone tunnels and facilitate the management of bone tunnels in multiple ligament injuries,while also diminishing suture abrasion caused by the windshield wiper effect.The technique achieves good clinical efficacy.
文摘为了实现航空风挡雨刷系统的精准定位控制,同时具备小型化和高可靠的特点,设计了一种基于SOC(System on Chip)片上系统的风挡雨刷控制系统。该风挡雨刷控制系统采用嵌入ARM处理器内核的SOC芯片作为主控制单元,通过PWM(Pulse width modulation)脉宽调制控制雨刷电机的高、低速调节控制,同时通过对冲洗泵的工作状态进行控制,实现风挡玻璃的冲洗功能。该风挡雨刷控制系统性能稳定、控制效果良好,达到了预期的系统控制要求。
文摘There are about 25 factories specialized in production of windshield wiper in China, reaching total output of nearly 1.9 million sets in 1993. Three of them are of strong production capacity. They are VALEO Wenling Auto Parts & Accessories Co. Ltd., Shanghai Industry Traffic Electrical Apparatus Co. Ltd.,
