目的:观察腓骨头上入路联合后内侧入路切开复位锁定钢板内固定治疗合并膝关节脱位的SchatzkerⅣ型胫骨平台骨折的临床疗效和安全性。方法:2018年11月至2021年3月,采用腓骨头上入路联合后内侧入路切开复位锁定钢板内固定治疗合并膝关节...目的:观察腓骨头上入路联合后内侧入路切开复位锁定钢板内固定治疗合并膝关节脱位的SchatzkerⅣ型胫骨平台骨折的临床疗效和安全性。方法:2018年11月至2021年3月,采用腓骨头上入路联合后内侧入路切开复位锁定钢板内固定治疗合并膝关节脱位的SchatzkerⅣ型胫骨平台骨折患者30例。男21例,女9例。年龄23~65岁,中位数48岁。左侧6例,右侧24例。均为闭合性骨折。后内侧劈裂骨折20例,前内侧及后内侧劈裂骨折10例;合并前髁间棘撕脱骨折16例;均合并后外侧压缩骨折。受伤至手术时间7~10d,中位数8d。记录手术时间、术中出血量;术后第2天,拍摄膝关节正侧位X线片,测量胫骨平台内翻角和后倾角;随访观察骨折愈合及并发症发生情况;末次随访时,采用美国特种外科医院(Hospital for Special Surgery,HSS)膝关节评分标准评价临床疗效。结果:本组30例均顺利完成手术。手术时间(72±10)min,术中出血量(180.0±40.2)mL。所有患者均获随访,随访时间12~24个月,中位数19个月。术后第2天,胫骨平台内翻角7.2°±1.3°、后倾角86.5°±2.6°。骨折均愈合,愈合时间3~6个月,中位数4个月。末次随访时,HSS膝关节评分(96.6±1.2)分,优16例、良11例、可3例。1例发生术后外侧切口脂肪液化,给予清创处理后切口愈合;1例发生术后切口感染,给予多次清创及抗感染治疗后切口愈合。结论:采用腓骨头上入路联合后内侧入路切开复位锁定钢板内固定治疗合并膝关节脱位的SchatzkerⅣ型胫骨平台骨折,能有效恢复膝关节正常结构,骨折愈合和膝关节功能恢复好,且安全性较高。展开更多
Biochemical reaction in microfluidic chip is sensitive to temperature.Temperature precise control in a small size device requires the temperature measurement with high measurement precision.Traditional temperature mea...Biochemical reaction in microfluidic chip is sensitive to temperature.Temperature precise control in a small size device requires the temperature measurement with high measurement precision.Traditional temperature measurement method usually measures the voltage drop of the thermistor,which is excited by a constant current source.This method requires the constant current source with high precision and stability.The output of the constant current source is influenced by environmental factors,resulting in a larger measurement error.To solve this problem,a proportion method,a two-layer filtering algorithm,and a power management technique were applied to improve the temperature measurement precision.The proportion method can reduce the low frequency fluctuation error.The two-layer filtering algorithm can reduce the high frequency fluctuation error furtherly.The power management technique used can improve the system stability.Through testing the temperature measurement system built,the experimental results show that the fluctuation error can be significantly decreased from 0.5◦C to 0.2◦C.展开更多
文摘目的:观察腓骨头上入路联合后内侧入路切开复位锁定钢板内固定治疗合并膝关节脱位的SchatzkerⅣ型胫骨平台骨折的临床疗效和安全性。方法:2018年11月至2021年3月,采用腓骨头上入路联合后内侧入路切开复位锁定钢板内固定治疗合并膝关节脱位的SchatzkerⅣ型胫骨平台骨折患者30例。男21例,女9例。年龄23~65岁,中位数48岁。左侧6例,右侧24例。均为闭合性骨折。后内侧劈裂骨折20例,前内侧及后内侧劈裂骨折10例;合并前髁间棘撕脱骨折16例;均合并后外侧压缩骨折。受伤至手术时间7~10d,中位数8d。记录手术时间、术中出血量;术后第2天,拍摄膝关节正侧位X线片,测量胫骨平台内翻角和后倾角;随访观察骨折愈合及并发症发生情况;末次随访时,采用美国特种外科医院(Hospital for Special Surgery,HSS)膝关节评分标准评价临床疗效。结果:本组30例均顺利完成手术。手术时间(72±10)min,术中出血量(180.0±40.2)mL。所有患者均获随访,随访时间12~24个月,中位数19个月。术后第2天,胫骨平台内翻角7.2°±1.3°、后倾角86.5°±2.6°。骨折均愈合,愈合时间3~6个月,中位数4个月。末次随访时,HSS膝关节评分(96.6±1.2)分,优16例、良11例、可3例。1例发生术后外侧切口脂肪液化,给予清创处理后切口愈合;1例发生术后切口感染,给予多次清创及抗感染治疗后切口愈合。结论:采用腓骨头上入路联合后内侧入路切开复位锁定钢板内固定治疗合并膝关节脱位的SchatzkerⅣ型胫骨平台骨折,能有效恢复膝关节正常结构,骨折愈合和膝关节功能恢复好,且安全性较高。
基金the Professional Technical Service Platform of Science and Technology Commission of Shanghai Municipality(No.19DZ2291103)。
文摘Biochemical reaction in microfluidic chip is sensitive to temperature.Temperature precise control in a small size device requires the temperature measurement with high measurement precision.Traditional temperature measurement method usually measures the voltage drop of the thermistor,which is excited by a constant current source.This method requires the constant current source with high precision and stability.The output of the constant current source is influenced by environmental factors,resulting in a larger measurement error.To solve this problem,a proportion method,a two-layer filtering algorithm,and a power management technique were applied to improve the temperature measurement precision.The proportion method can reduce the low frequency fluctuation error.The two-layer filtering algorithm can reduce the high frequency fluctuation error furtherly.The power management technique used can improve the system stability.Through testing the temperature measurement system built,the experimental results show that the fluctuation error can be significantly decreased from 0.5◦C to 0.2◦C.
