Influence of Corrugated Web Geometry on Mechanical Properties of I-Beam: Laboratory Tests

This paper presents the results of experimental investigations performed on beams with corrugated webs. The aim of the research was to determine the effect of the geometric parameters of the sinusoidal web on the behavior of I-beams subjected to four-point bending. Special attention was paid to the effects of web thickness and wave geometry on the deflection of beams. The obtained failure modes of particular test samples are presented. Reference has also been made to the determined standard load capacities based on Annex D of the EC3 standard. In order to compare the performance of beams with corrugated webs, the results for beams with flat webs of the same thickness of web sheets are also presented.     

Management of Neurogenic Heterotopic Ossification: Three case histories to illustrate the role of physiotherapy

Neurogenic heterotopic ossification is a process of abnormal bone formation of multi-factorial aetiology. It occurs at varying sites to produce deformity and restriction of joint movement, and has a major impact on physical ability. There is extensive literature on the medical management of heterotopic ossification, but the role of physiotherapy is poorly described.This article aims to illustrate the importance of proactive physiotherapy in the team management and treatment of this condition. The authors show that physiotherapy is not contra-indicated in the presence of neurogenic heterotopic ossification and illustrate how interventions for improving range of movement can be used. The authors suggest that integrated team management was essential to the successful outcomes in these complex cases.     

小切口治疗注射性臀肌挛缩症

目的:评价小切口注射性臀肌挛缩症的效果.方法:采用小切口治疗具有典型症状的臀肌挛缩症22例.所有病例均要求早期开始功能锻炼.结果:平均随访27个月,优良率100%.结论:采用小切口治疗注射性臀肌挛缩症具有创伤小,愈合快,瘢痕小,外形美观等优点.     

虎口挛缩的皮瓣修复

目的 介绍虎口挛缩的皮瓣修复体会.方法 回顾1985年以来诊治的112例116个虎口挛缩病例,就其皮瓣修复的手术适应证及预后进行总结分析.结果 术后116个皮瓣完全成活112个,有4例前臂骨间后动脉逆行岛状皮瓣尖端有3.0 cm×1.5 cm表皮坏死,经换药后愈合.有16例皮瓣在术后3～6个月再次行皮瓣整形术.术后随访1～24个月,平均4.5个月.虎口饱满,外形满意,皮色正常,无继发挛缩;拇指对掌、内收、外展功能均近于正常.移位皮瓣在术后3个月开始恢复感觉功能.结论 恰当的皮瓣移植修复可以保证虎口的外形及功能的恢复.     

先天性拇指疾病的疗效分析

目的：介绍先天性拇指疾病的治疗效果。方法：1988年起,对56例先天性拇多指畸形,先天性拇板机指及先天性拇巨指症进行手术治疗。采用拇指赘生指切除、副指皮瓣转移,多拇残端修整术治疗拇多指畸形;巨指截指及整形术治疗巨指症;增厚狭窄腱鞘切除术治疗先天性拇板机指。结果：术后随访2－10年。（1）先天性拇指多指畸形：主干拇指外形改善,拇外展充分,对指功能良好。（2）拇指板机指：拇指伸屈自如,发育满意。（3）先天性巨指症1例：示、中指巨指切除,拇指远节截除,近节缩短整形,术后外形欠佳。结论：先天性拇指多指畸形应根据具体情况选择手术方式,以改善畸形、恢复拇指功能。先天性板机指明确诊断手术疗效佳。先天性巨指症采用截指方法较为理想。     

足趾移植再造拇、手指400例报告

总结１９６６年２月至１９９４年２月的足趾移植术４００例，以正确评佑足趾移植在拇、手指再造中的作用。再造方法：单纯第２趾移植（带或不带跖趾关节）２９９例，第２、３趾联合移植２８例，第２趾带第３趾近节趾骨１例，第２趾伴各种皮瓣移位或移植６６例，甲瓣伴第２趾第２趾移植６例。移植成活３８６例，失败１４例，成活率为９６．５％。２４０例获得２年以上的功能随访，再造指的运动与感觉功能优良率达９０％以上·足的功能满足率达８６％－９１％。对各种再造方法的手术指征，血循危象的防治，提高功能效果的关键及趾移植后足的功能影响等进行了详细分析。总体评价为：（１）足趾移植是再造拇、手指比较理想的方法。（２）单纯切除第２趾不论跖骨头是否保留均不造成足的功能及生物力学的明显改变。（３）随着足部切除组织的增加，术后足的外形、功能及生物力学的变化也加大。     

中环指相邻侧岛状皮瓣瓦合修复拇指指端脱套伤

目的总结采用同一血管蒂的中指尺侧和环指桡侧指动脉岛状皮瓣瓦合修复拇指指端脱套伤的手术方法和临床疗效。方法2008年9月-2012年7月．采用同一血管蒂的中指尺侧和环指桡侧指动脉岛状皮瓣瓦合修复拇指指端脱套伤8例。左手拇指3例,右手5例。皮肤缺损范围为4．0cm×3．2cm～7．2cm×5．5cm。伤后至入院时间为20min-7h,平均3．5h。本组中指皮瓣切取范围为2．5cm×2．2cm-4．2cm×3．0cm,环指皮瓣为2．0cmv1．5cm-3．5cm×2．8cm。供区取中厚皮片游离移植修复,打包加压包扎。结果本组皮瓣均顺利成活,切口及供区植皮均一期愈合。术后随访6～18个月,平均12个月。皮瓣外形、质地均良好,恢复保护性感觉,患指屈伸功能正常。参照中华医学会手外科学会上肢部分功能评定试用标准评定：优4例,良3例,可1例．优良率为87．5％。供指外形及功能无影响。结论采用同一血管蒂的中指尺侧和环指桡侧指动脉岛状皮瓣瓦合修复拇指指端脱套伤,手术操作简便,疗效满意。