目的分析老年膝关节退行性骨关节炎采取关节置换手术治疗的临床效果。方法选取2019年12月—2022年12月麻城市人民医院骨外科收治的72例老年膝关节退行性骨关节炎患者为研究对象,按照随机数表法分为两组,各36例,对照组行保守治疗,观察组...目的分析老年膝关节退行性骨关节炎采取关节置换手术治疗的临床效果。方法选取2019年12月—2022年12月麻城市人民医院骨外科收治的72例老年膝关节退行性骨关节炎患者为研究对象,按照随机数表法分为两组,各36例,对照组行保守治疗,观察组行关节置换术。比较两组患者临床效果。结果治疗前,两组患者骨关节炎指数评分(Western Ontario and McMaster Universities Osteoarthritis Index,WOMAC)、日常生活能力量表(Activities of Daily Living,ADL)评分与徒手肌力评定法分级标准中Kendall百分比评分对比,差异无统计学意义(P>0.05)。治疗后,观察组美国特种外科医院膝关节评分法(Hospital for Special Surgery,HSS)总分、ADL评分、患侧股四头及腘绳肌肌力评分均明显高于对照组,WOMAC评分低于对照组,差异有统计学意义(P<0.05)。观察组并发症发生率(2.78%)低于对照组,差异有统计学意义(χ^(2)=4.571,P<0.05)。观察组生活质量优于对照组,差异有统计学意义(P<0.05)。结论关节置换术能够有效改善老年膝关节退行性骨关节炎膝关节功能,缓解骨关节炎,促进肌力的恢复,提高患者生活能力与生活质量,临床上具有重要应用意义。展开更多
This paper presents a method to estimate the depth of deep-sea target by matching the time delay and amplitude structure of echo multipath highlight clusters.The echo structure is the convolution of two-way channel tr...This paper presents a method to estimate the depth of deep-sea target by matching the time delay and amplitude structure of echo multipath highlight clusters.The echo structure is the convolution of two-way channel transfer function as well as the acoustic scattering function of the target,which shows the characteristics of deep-sea highlight clusters when the target is close to the sea surface or near the sea bottom.The time delay and amplitude structure of highlight clusters are related to the target depth,which can be used to estimate the target depth.A method of matching estimation of target depth on range-depth grid using nonlinear programming cost function is established.The mismatch effects of inter-cluster time delay interval deviation and sea water sound velocity profile deviation on matching estimation are simulated and analyzed.The results of a winter experiment in the South China Sea illustrate that when the water depth is 1 km and distance is 5–8 km,the echo of target is 40 m underwater,there are three highlight clusters with a time interval of about 0.3 s,with the error range of target depth matching estimation being 0–65 m.展开更多
文摘目的分析老年膝关节退行性骨关节炎采取关节置换手术治疗的临床效果。方法选取2019年12月—2022年12月麻城市人民医院骨外科收治的72例老年膝关节退行性骨关节炎患者为研究对象,按照随机数表法分为两组,各36例,对照组行保守治疗,观察组行关节置换术。比较两组患者临床效果。结果治疗前,两组患者骨关节炎指数评分(Western Ontario and McMaster Universities Osteoarthritis Index,WOMAC)、日常生活能力量表(Activities of Daily Living,ADL)评分与徒手肌力评定法分级标准中Kendall百分比评分对比,差异无统计学意义(P>0.05)。治疗后,观察组美国特种外科医院膝关节评分法(Hospital for Special Surgery,HSS)总分、ADL评分、患侧股四头及腘绳肌肌力评分均明显高于对照组,WOMAC评分低于对照组,差异有统计学意义(P<0.05)。观察组并发症发生率(2.78%)低于对照组,差异有统计学意义(χ^(2)=4.571,P<0.05)。观察组生活质量优于对照组,差异有统计学意义(P<0.05)。结论关节置换术能够有效改善老年膝关节退行性骨关节炎膝关节功能,缓解骨关节炎,促进肌力的恢复,提高患者生活能力与生活质量,临床上具有重要应用意义。
文摘This paper presents a method to estimate the depth of deep-sea target by matching the time delay and amplitude structure of echo multipath highlight clusters.The echo structure is the convolution of two-way channel transfer function as well as the acoustic scattering function of the target,which shows the characteristics of deep-sea highlight clusters when the target is close to the sea surface or near the sea bottom.The time delay and amplitude structure of highlight clusters are related to the target depth,which can be used to estimate the target depth.A method of matching estimation of target depth on range-depth grid using nonlinear programming cost function is established.The mismatch effects of inter-cluster time delay interval deviation and sea water sound velocity profile deviation on matching estimation are simulated and analyzed.The results of a winter experiment in the South China Sea illustrate that when the water depth is 1 km and distance is 5–8 km,the echo of target is 40 m underwater,there are three highlight clusters with a time interval of about 0.3 s,with the error range of target depth matching estimation being 0–65 m.
