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1.
目的 :探讨后路悬臂梁支撑线缆提拉复位固定治疗可复性及难复性寰枢椎脱位临床疗效。方法 :回顾分析2010年1月至2018年12月收治25例寰枢椎脱位患者资料,其中男15例,女10例,年龄21~72岁,平均49.6±8.8岁。所有病例术前都有不同程度四肢麻木及乏力症状,术前经颈椎动力位片及持续颅骨牵引判定12例为可复性寰枢椎脱位,13例为难复性寰枢椎脱位。25例患者均行后路悬臂梁支撑线缆提拉复位固定融合术。通过术前、术后日本骨科学会(Japanese Othopaedic Associasion,JOA)评分评估神经功能恢复情况,通过术前、术后影像学测量寰齿间距(atlantodental interval,ADI)和延髓脊髓角(cervicomedullary angle,CMA)评估寰枢椎脱位复位情况。结果:所有患者随访12个月~8年,平均随访1年6个月。JOA评分术后1周、6个月及末次随访分别为13.7±1.4、14.8±1.6、15.2±1.3分,较术前9.1±1.5分明显改善(P0.05)。术后影像学随访提示寰枢椎脱位复位满意,ADI术后1周、6个月及末次随访分别为2.3±0.3mm、2.3±0.5mm、2.4±0.6mm,均较术前(6.5±0.9mm)明显改善(P0.05)。CMA术后1周、6个月及末次随访分别为153.9°±7.3°、153.4°±7.6°、152.7°±7.8°,均较术前(121.8°±5.1°)明显改善(P0.05)。1例患者随访发现线缆对寰椎后弓有部分切割,但未断裂。所有病例未见内固定螺钉松动,断裂,骨性融合均良好。结论:后路悬臂梁支撑线缆提拉复位固定治疗可复性及难复性寰枢椎脱位是一种固定牢固,安全可靠的方法,可获得良好的临床效果。  相似文献   
2.
目的建立电缆绝缘护套中Cr(Ⅵ)含量的火焰原子吸收光谱测定方法。方法采用干法灰化分解电缆绝缘护套样品,在稀硝酸介质中,采用火焰原子吸收光谱法测定Cr(Ⅵ)含量。结果在0.001 9~8.00μg/ml的线性范围内,所得Cr(Ⅵ)的线性方程为A=0.114 3c+0.006 3,r=0.999 6。该方法的检出限为0.000 7μg/ml,定量下限为0.001 9μg/ml,平均回收率为97.8%~102.2%,RSD为3.35%~7.13%。结论该方法快速简便,精密度和准确度均较高,适于对电缆绝缘护套中Cr(Ⅵ)的测定。  相似文献   
3.
Present body-powered upper-limb prostheses use a cable control system employing World War II aircraft technology to transmit force from the body to the prosthesis for operation. The cable and associated hardware are located outside the prosthesis. Because individuals with arm amputations want prostheses that are natural looking with a smooth, soft outer surface, a design and development project was undertaken to replace the cable system with hydraulics located inside the prosthesis. Three different hydraulic transmission systems were built for evaluation, and other possibilities were explored. Results indicate that a hydraulic force transmission system remains an unmet challenge as a practical replacement for the cable system. The author was unable to develop a hydraulic system that meets the necessary dynamic requirements and is acceptable in size and appearance.  相似文献   
4.
本文为研究电缆GIS终端环氧套管气泡缺陷引起的局部放电数据,并在试验室进行GIS终端环氧套管气泡缺陷的局部放电测试,获取了其典型图谱,为现场检测GIS电缆终端局部放电的诊断提供了缺陷典型图谱的样本数据。  相似文献   
5.
6.
在城市的电力建设及电力供应中,高压电缆隧道逐步成为城市供电的主要通道,装有双视系统及各种传感器的移动巡检机器人对高压电缆隧道进行巡检将会逐步替代人工巡检。在隧道内安装多个无线AP,移动巡检机器人和无线AP自动连接。论文研究一种软切换技术,确保机器人在运行过程中数据和视频信息能够连续传输。  相似文献   
7.
Homeless persons in San Francisco, California, USA, have been shown to have head and body lice infestations and Bartonella quintana infections. We surveyed a self-selected population of homeless persons in San Francisco to assess infestations of head and body lice, risks of having body lice, and presence of B. quintana in lice. A total of 203 persons who reported itching were surveyed during 2008–2010 and 2012: 60 (30%) had body lice, 10 (4.9%) had head lice, and 6 (3.0%) had both. B. quintana was detected in 10 (15.9%) of 63 body lice pools and in 6 (37.5%) of 16 head lice pools. Variables significantly associated (p<0.05) with having body lice in this homeless population included male sex, African–American ethnicity, and sleeping outdoors. Our study findings suggest that specific segments of the homeless population would benefit from information on preventing body lice infestations and louseborne diseases.  相似文献   
8.
With increasing support duration of cardiac assist devices, transcutaneous drivelines remain a weak point of the therapy. First, they can be an entry point for infections, and second, cable lesions and even electrical failures due to material fatigue and eventual carelessness can occur. We report a case of a damaged outer sheath of a ventricular assist device driveline cable directly at the exit site, where the standard repair procedure with self‐fusing tape may lead to biocompatibility problems and irritation of the entrance through the skin. Therefore, a new procedure was developed using a special sleeve expander tool and a highly expandable latex tubing to stabilize the defect in a flexible and biocompatible manner. A patient experienced a fracture of the outer sheath of a HeartWare HVAD driveline directly at the skin entrance (approximately 15 mm long, 5 mm distal from the skin). The metal strands and the electrical functionality were yet not affected, therefore, a pump exchange was not indicated. After considering several conventional solutions for repair as not applicable, a new approach was developed: a sleeve expander tool was applied, which allowed radial stretching of the latex tubing. After preparations of the tool and the cable site, the pump was briefly disconnected, the tubing was moved over the connector and was released at the site of fracture. The problem could be solved by keeping the cable's flexibility and without additional risks to the skin. Within a still ongoing (5‐month) follow‐up, the skin entrance returned to perfect condition and no further intervention was necessary. In conclusion, this method allows a quick stabilization and repair of damaged driveline isolations even near the exit site, resulting in a biocompatible surface and consistent flexibility of the cable.  相似文献   
9.
《Injury》2017,48(2):388-393
IntroductionAnatomical reduction of displaced acetabular fracture is not without its’ limitations and complications. This study is conducted to assess clinical and radiological outcomes as well as complications of treating displaced acetabular fractures with emphasis on anatomical reduction in weight-bearing area, mainly the posterior column, and imperfect reduction of the anterior column is acceptable. However, stability of both columns is mandatory.MethodsIt was a retrospective study carried out in a Level 1 arthroplasty and trauma centre. 23 patients (17 males, 6 females) with average age of 50.1 years (range, 36–68 years) with displaced acetabular fracture treated with combined incisions and plate-cable systems were included. There were 3 elementary and 18 associated fractures according to Letournel classification. Average follow-up was 23.5 months (range, 12–38.7 months). Mean operation time was 160 min (range: 75–320 min). Functional scores were evaluated using Harris Hip Score (HHS) whilst reduction was assessed by Matta criteria. Any displacement of reduction, osteoarthritis, heterotopic ossification, and other complications was recorded.Result65.2% (15/23) of the patients obtained excellent HHS and 21.7% (5/23) had good HHS. There were 12 anatomical, 6 imperfect, and 5 poor reductions. No displacement was recorded in final follow-up. Complications documented: three lateral femoral cutaneous nerve injuries, two conversions to total hip arthroplasty, three Brooker stage 1 heterotrophic ossification, one pulmonary embolism and one screw irritation. No incidence of wound breakdown, infection and radiological osteoarthritis was reported.ConclusionsImperfect reduction of the anterior column provided clinical outcomes that are as good as total anatomical reduction. This approach minimizes soft tissue damage and reduces perioperative morbidities.  相似文献   
10.
王万宏  杜远立  熊家伟  胡爱心 《骨科》2017,8(1):30-33,43
目的:观察线缆套绕喙突与锁骨固定治疗新鲜单侧TossyⅢ型肩锁关节脱位的临床效果。方法回顾分析2007年12月至2016年3月于我院采用切开复位、线缆套绕喙突与锁骨固定治疗新鲜单侧TossyⅢ型肩锁关节脱位的39例病人的临床资料,通过其术后X线片评价其恢复情况,采用Karlsson疗效评价标准对患肩功能进行评定。结果本组病人随访时间为6~60个月,平均为16个月。术后肩关节外观及功能恢复满意,未见线缆断裂和松动的现象。按照Karlsson疗效评价标准对肩关节功能进行评定,其中优30例,良9例,优良率为100%。结论线缆套绕固定喙突与锁骨符合肩锁关节复位固定的生物力学要求,具有疗效好、创伤小、操作简单的优点,是治疗TossyⅢ型肩锁关节脱位的一种有效手术方法。  相似文献   
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