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Assessing the Influence of Roadside Advertising on Traffic Distraction and Its Interplay with Inside Vehicle Distractions: A Cross-Cultural Study in Jordan and Kuwait
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作者 Lina Shbeeb 《Journal of Transportation Technologies》 2023年第4期789-815,共27页
Limited research has explored roadside advertisements’ effects on road user behavior in Middle Eastern countries. This study aims to understand distraction perceptions, including advertisements, their impact on behav... Limited research has explored roadside advertisements’ effects on road user behavior in Middle Eastern countries. This study aims to understand distraction perceptions, including advertisements, their impact on behavior, and potential influences from advertisement type, in-vehicle distraction, and country factors (reflecting culture and environment). A standardized questionnaire was administered in Jordan and Kuwait, complemented by observations across three segment types: roadside advertisements, commercial signs, and road signs as control segments. Descriptive and inferential statistics were used. Results indicated a significant disparity in distraction perception between the two groups. Advertisement presence influenced Kuwaiti but not Jordanian behavior. Behavior varied by advertisement type in Jordan, not Kuwait, and in-vehicle distraction did not impact driver behavior. The study suggests explicitly revising advertising policies with a traffic safety focus. Overall, the study contributes insights into road user perceptions and behaviors, highlighting the complex interplay of distractions and advertising on road safety. Further research is required to validate these findings and shape road safety regulations. 展开更多
关键词 Roadside Advertisement Billboard DISTRACTION Perception Behaviour in Traffic INSIDE Vehicle Distraction
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Treatment of posterior urethral distractions defects following pelvic fracture 被引量:5
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作者 Emilio Ríos Luís Martínez-Pineiro 《Asian Journal of Urology》 2018年第3期164-171,共8页
Posterior urethral injuries typically arise in the context of a pelvic fracture.Retrograde urethrography is the preferred diagnostic test in trauma patients with pelvic fracture where a posterior urethral rupture is s... Posterior urethral injuries typically arise in the context of a pelvic fracture.Retrograde urethrography is the preferred diagnostic test in trauma patients with pelvic fracture where a posterior urethral rupture is suspected.Pelvic fractures however preclude the adequate positioning of the patient on the X-ray table on admission and computed tomography scan with intravenous contrast and delayed films generally performed first.Suprapubic bladder catheter placement under ultrasound guidance should be performed whenever a posterior urethral disruption is suspected.Early diagnosis and proper acute management decrease the associated complications,such as strictures,urinary incontinence and erectile dysfunction.The correct and appropriate initial treatment of associated urethral rupture is critical to the proper healing of the injury.Placing of a suprapubic cystostomy on admission and delayed anastomotic urethroplasty after 3e6 months continues to be the gold standard of treatment.In this paper,we provide a comprehensive review of the literature with a special emphasis on the various treatments available:Open or endoscopic primary realignment,immediate or delayed urethroplasty after suprapubic cystostomy,and delayed optical urethrotomy. 展开更多
关键词 Posterior urethral injuries distractions defects Pelvic fracture REALIGNMENT URETHROPLASTY Optical urethrotomy
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Neurophysiological, histological, and behavioral characterization of animal models of distraction spinal cord injury: a systematic review 被引量:1
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作者 Bo Han Weishi Liang +4 位作者 Yong Hai Duan Sun Hongtao Ding Yihan Yang Peng Yin 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第3期563-570,共8页
Distraction spinal cord injury is caused by some degree of distraction or longitudinal tension on the spinal cord and commonly occurs in patients who undergo corrective operation for severe spinal deformity.With the i... Distraction spinal cord injury is caused by some degree of distraction or longitudinal tension on the spinal cord and commonly occurs in patients who undergo corrective operation for severe spinal deformity.With the increased degree and duration of distraction,spinal cord injuries become more serious in terms of their neurophysiology,histology,and behavior.Very few studies have been published on the specific characteristics of distraction spinal cord injury.In this study,we systematically review 22 related studies involving animal models of distraction spinal cord injury,focusing particularly on the neurophysiological,histological,and behavioral characteristics of this disease.In addition,we summarize the mechanisms underlying primary and secondary injuries caused by distraction spinal cord injury and clarify the effects of different degrees and durations of distraction on the primary injuries associated with spinal cord injury.We provide new concepts for the establishment of a model of distraction spinal cord injury and related basic research,and provide reference guidelines for the clinical diagnosis and treatment of this disease. 展开更多
关键词 animal models behavior DISTRACTION heterogeneity HISTOLOGY mechanism NEUROPHYSIOLOGY spinal cord injury systematic review tension
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Correlates of Coping Styles
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作者 Adrian Furnham 《Health》 2024年第7期592-601,共10页
Five hundred participants completed a short, ten-item measure of coping along with measures of self-esteem, intelligence, belief in a just world (BJW) and conspiracy theories (CT). The scale factored into four recogni... Five hundred participants completed a short, ten-item measure of coping along with measures of self-esteem, intelligence, belief in a just world (BJW) and conspiracy theories (CT). The scale factored into four recognisable coping styles labelled socio-emotional, cognitive, internalisation and distraction. Correlations showed all factors were related to self-esteem and trait optimism. Regressions onto each factor indicated that self-esteem was the most consistent factor being associated positively with all factors, except internalisation. Younger females with low self-esteem tended to use socio-emotional coping, optimists with high self-esteem cognitive coping, younger, less optimistic people with low self-esteem internalisation and high self-esteem, less intelligent people with BJW distraction as a coping strategy. Implications and limitations are acknowledged. 展开更多
关键词 COPING RESILIENCE Socio-emotional INTERNALISATION DISTRACTION
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Determining driver perceptions about distractions and modeling their effects on driving behavior at different age groups
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作者 Uneb Gazder Khaled J.Assi 《Journal of Traffic and Transportation Engineering(English Edition)》 EI CSCD 2022年第1期33-43,共11页
This study was aimed at determining the driving distractions which are perceived most hazardous and determining the effects of these distractions and age on speed and headway. A questionnaire survey was done to find o... This study was aimed at determining the driving distractions which are perceived most hazardous and determining the effects of these distractions and age on speed and headway. A questionnaire survey was done to find out the opinion of drivers related to the most hazardous distraction. 639 responses were collected in the survey which were used to determine the top-rated distractions for drivers in Bahrain. Roadside observations were taken to observe the speed, headway, age and type of distraction for the driver. Speed was observed for 48 drivers while headway was observed for 36 drivers along with other parameters. The most hazardous distractions, according to the participants of the questionnaire, are using mobile phones, handling children, and accidents or incidents on the road. Further, the results of the two-way analysis of variance(ANOVA) test and regression analysis demonstrated that using mobile phones and age have a significant effect on both speed and headway. Speed tends to decrease with distraction for all age groups while decreasing the headway for young and middle-aged drivers. The effect of distraction is higher than the effect of age on speed, as well as headway. Texting has the most significant effect among distractions on headway. It is hereby recommended that policymakers should focus on increasing awareness and stringent law enforcement related to handling mobile phones and children, especially for young and middle-aged drivers. 展开更多
关键词 Traffic engineering Traffic safety Driving behavior SPEED Driving distraction Mobile phone
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Identification of injury type using somatosensory and motor evoked potentials in a rat spinal cord injury model 被引量:1
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作者 Rong Li Han-Lei Li +2 位作者 Hong-Yan Cui Yong-Can Huang Yong Hu 《Neural Regeneration Research》 SCIE CAS CSCD 2023年第2期422-427,共6页
The spinal cord is at risk of injury during spinal surgery.If intraoperative spinal co rd injury is identified early,irreve rsible impairment or loss of neurological function can be prevented.Different types of spinal... The spinal cord is at risk of injury during spinal surgery.If intraoperative spinal co rd injury is identified early,irreve rsible impairment or loss of neurological function can be prevented.Different types of spinal cord injury result in damage to diffe rent spinal cord regions,which may cause diffe rent somatosensory and motor evoked potential signal res ponses.In this study,we examined electrophysiological and histopathological changes between contusion,distra ction,and dislocation spinal cord injuries in a rat model.We found that contusion led to the most severe dorsal white matter injury and caused considerable attenuation of both somatosensory and motor evoked potentials.Dislocation resulted in loss of myelinated axons in the lateral region of the injured spinal cord along the rostrocaudal axis.The amplitude of attenuation in motor evoked potential responses caused by dislocation was greater than that caused by contusion.After distraction injury,extracellular spaces were slightly but not significantly enlarged;somatosensory evoked potential res ponses slightly decreased and motor evoked potential responses were lost.Correlation analysis showed that histological and electrophysiological findings we re significantly correlated and related to injury type.Intraope rative monitoring of both somatosensory and motor evoked potentials has the potential to identify iatrogenic spinal cord injury type during surgery. 展开更多
关键词 contusion injury dislocation injury distraction injury electropnysiology heterogeneity HISTOPATHOLOGY injury mechanism motor evoked potential somatosensory evoked potential spinal cord injury
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A two-stage but time-saving reconstructive scheme to treat severe lower limb length discrepancy:Two case reports
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作者 Zhen Shi Qifeng Ou +6 位作者 Cheng Li Yue Li Bo Wang Gechang Cheng Yimin Fan Qi Bao Juyu Tang 《Chinese Journal of Plastic and Reconstructive Surgery》 2023年第2期68-72,共5页
Limb length discrepancy(LLD)is a common orthopedic condition that can result in significant functional impairment,pain,and cosmetic deformities.Current reconstructive techniques for severe LLD are primarily based on c... Limb length discrepancy(LLD)is a common orthopedic condition that can result in significant functional impairment,pain,and cosmetic deformities.Current reconstructive techniques for severe LLD are primarily based on callus distraction,which is a time-consuming process that can lead to complications,such as significant infection,joint stiffness,and stress fractures.To reduce the therapeutic time and minimize the risk of complications,we investigated the use of vascularized bone flaps as a technical supplement to callus distraction in the reconstruction of short limbs.We present two cases of severe LLD in the upper and lower legs,in which a twostage reconstruction approach was used.In the first stage,external fixation was applied to the affected limb to correct the soft tissue length and convert the short deformity into a bone defect.In the second stage,the bone defect was reconstructed using bilateral(patient A)or unilateral(patient B)free vascularized fibula bone grafts.Both patients had complete survival of the fibular grafts without stress fractures,and bone consolidation took 8 months(patient A)and 4 months(patient B).Compared to the traditional callus distraction,the two-stage approach was found to be more time-saving and reliable.The entire reconstructive scheme required 18 and 4 months for patients A and B,respectively,whereas the traditional callus distraction required 41 and 17 months,respectively.These findings suggest that the use of vascularized bone flaps as a technical supplement for callus distraction may provide an effective and efficient alternative for the treatment of severe LLD.Further studies are needed to validate these results and assess the long-term outcomes of this approach. 展开更多
关键词 Limb length discrepancy Callus distraction Distraction osteogenesis Fibular graft Two-stage reconstruction
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牵引成骨术分子生物学机制研究进展 被引量:1
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作者 易红良 殷善开 《国外医学(耳鼻咽喉科学分册)》 2005年第5期302-304,共3页
目前的研究表明缓慢的牵张刺激可增强骨痂中各种生长因子(TGF-βs、BMPs、IGF-1、FGF-2、VEGF)表达和细胞外基质(胶原蛋白Ⅰ、骨钙素、骨桥接素和骨连接素等)的生成。本文就牵引成骨术分子生物学机制近年来的研究进展作一综述。
关键词 骨生成 内脱位(Osteogenesis Distraction) 生长物质(Growth Substances) 细胞外基质(Extracellular Matrix) 分子生物学机制 牵引成骨术 机制研究
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The Effectiveness of Driver Education and Information Programs in the State of Nevada
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作者 Alexander Paz David Copeland +2 位作者 Pankaj Maheshwari Kris Gunawan Mohammad Soroush Tafazzoli 《Open Journal of Applied Sciences》 2015年第1期1-13,共13页
According to National Highway Traffic Safety Administration, pedestrian and driver crashes are increasing at an alarming rate due to technological advancements and human errors. There is a need to improve existing dri... According to National Highway Traffic Safety Administration, pedestrian and driver crashes are increasing at an alarming rate due to technological advancements and human errors. There is a need to improve existing driver education programs to mitigate the chances of crashes. The objectives of this research were 1) to examine the quality of Nevada’s driver education by evaluating the effectiveness of its programs, and 2) to provide recommendations to improve driving education in Nevada based on the results from this study. Two different surveys were conducted in Clark County, Southern Nevada. The first survey focused on assessing the strengths and limitations of the current Driver Education Programs in Nevada by capturing the opinions and attitudes of those who went through the process as teenagers. The second survey focused on driver safety through the involvement of pedestrians on the road. These surveys and the corresponding statistical analysis as well as the exiting literature have provided insights to improve driving education. The corresponding recommendations were organized into seven major categories: 1) lack of rigor of online driver education, 2) interactive learning and technology, 3) follow-up exams, 4) practice/training at home, 5) collecting information about crashes, 6) pedestrians, and 7) additional emphasis. Finally, due to the dangers of driving distractions (texting and calling on the cell phone) and impairments (driving under the influence of alcohol or drugs), more emphasis on these topics—as well as more public announcements through billboards, television commercials, and magazines— can help to constantly remind drivers about having good driving habits. 展开更多
关键词 DRIVER Education Driving distractions INTERACTIVE Learning Techniques Statistical Analysis DRIVER and PEDESTRIAN Interactions
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Expression of Bone-related Genes in Bone Marrow MSCs after Cyclic Mechanical Strain: Implications for Distraction Osteogenesis 被引量:12
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作者 Meng-chun Qi Shu-juan Zou +2 位作者 Li-chi Han Hai-xiao Zhou Jing Hu 《International Journal of Oral Science》 SCIE CAS CSCD 2009年第3期143-150,共8页
Aim Understanding the response of mesenchymal stem cells (MSCs) to mechanical strain and their consequent gene expression patterns will broaden our knowledge of the mechanobiology of distraction osteogenesis. Method... Aim Understanding the response of mesenchymal stem cells (MSCs) to mechanical strain and their consequent gene expression patterns will broaden our knowledge of the mechanobiology of distraction osteogenesis. Methodology In this study, a single period of cyclic mechanical stretch (0.5 Hz, 2,000 με) was performed on rat bone marrow MSCs. Cellular proliferation and alkaline phosphatase (ALP) activity was examined. The mRNA expression of six bone-related genes (Ets-1, bFGF, IGF-Ⅱ, TGF-β, Cbfal and ALP) was detected using real-time quantitative RT-PCR. Results The results showed that mechanical strain can promote MSCs proliferation, increase ALP activity, and up-regulate the expression of these genes. A significant increase in Ets-1 expression was detected immediately after mechanical stimulation, but Cbfal expression became elevated later. The temporal expression pattem of ALP coincided perfectly with Cbfal. Conclusion The results of this study suggest that mechanical strain may act as a stimulator to induce differentiation of MSCs into osteoblasts, and that these bone-related genes may play different roles in the response of MSCs to mechanical stimulation. 展开更多
关键词 distraction osteogenesis mechanical strain mesenchymal stem cell (MSC) osteogenic factor gene expression
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Role of the Ilizarov non-free bone plasty in the management of long bone defects and nonunion: Problems solved and unsolved 被引量:15
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作者 Dmitry Y Borzunov Sergei N Kolchin Tatiana A Malkova 《World Journal of Orthopedics》 2020年第6期304-318,共15页
BACKGROUND Ilizarov non-free bone plasty is a method of distraction osteogenesis using the Ilizarov apparatus for external fixation which originated in Russia and was disseminated across the world. It has been used in... BACKGROUND Ilizarov non-free bone plasty is a method of distraction osteogenesis using the Ilizarov apparatus for external fixation which originated in Russia and was disseminated across the world. It has been used in long bone defect and nonunion management along with free vascularized grafting and induced membrane technique. However, the shortcomings and problems of these methods still remain the issues which restrict their overall use.AIM To study the recent available literature on the role of Ilizarov non-free bone plasty in long bone defect and nonunion management, its problems and the solutions to these problems in order to achieve better treatment outcomes.METHODS Three databases(Pub Med, Scopus, and Web of Science) were searched for literature sources on distraction osteogenesis, free vascularized grafting and induced membrane technique used in long bone defect and nonunion treatment within a five-year period(2015-2019). Full-text clinical articles in the English language were selected for analysis only if they contained treatment results,complications and described large patient samples(not less than ten cases for congenital, post-tumor resection cases or rare conditions, and more than 20 cases for the rest). Case reports were excluded.RESULTS Fifty full-text articles and reviews on distraction osteogenesis were chosen.Thirty-five clinical studies containing large series of patients treated with this method and problems with its outcome were analyzed. It was found that distraction osteogenesis techniques provide treatment for segmental bone defects and nonunion of the lower extremity in many clinical situations, especially in complex problems. The Ilizarov techniques treat the triad of problems simultaneously(bone loss, soft-tissue loss and infection). Management of tibial defects mostly utilizes the Ilizarov circular fixator. Monolateral fixators are preferable in the femur. The use of a ring fixator is recommended in patients with an infected tibial bone gap of more than 6 cm. High rates of successful treatment were reported by the authors that ranged from 77% to 100% and depended on the pathology and the type of Ilizarov technique used. Hybrid fixation and autogenous grafting are the most applicable solutions to avoid after-frame regenerate fracture or deformity and docking site nonunion.CONCLUSION The role of Ilizarov non-free bone plasty has not lost its significance in the treatment of segmental bone defects despite the shortcomings and treatment problems encountered. 展开更多
关键词 Bone defect Ilizarov method Distraction osteogenesis Bone transport Bone nonunion Free vascularized grafts Induced membrane technique complication
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Management of complex and redo cases of pelvic fracture urethral injuries 被引量:13
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作者 Sanjay BKulkarni Sandesh Surana +5 位作者 Devang JDesai Hazem Orabi Subramanian Iyer Jyotsna Kulkarni Ajit Dumawat Pankaj M.Joshi 《Asian Journal of Urology》 2018年第2期107-117,共11页
Objectives:Pelvic fracture urethral injuries(PFUI)result from traumatic disruption of the urethra.A significant proportion of cases are complex rendering their management challenging.We described management strategies... Objectives:Pelvic fracture urethral injuries(PFUI)result from traumatic disruption of the urethra.A significant proportion of cases are complex rendering their management challenging.We described management strategies for eight different complex PFUI scenarios.Methods:Our centre is a tertiary referral centre for complex PFUI cases.We maintain a prospective database(1995e2016),which we retrospectively analysed.All patients with PFUI managed at our institute were included.Results:Over two decades 1062 cases of PFUI were managed at our institute(521 primary and 541 redo cases).Most redo cases were referred to us from other centres.Redo cases had up to five prior attempts at urethroplasty.We managed complex cases,which included bulbar ischemia,young boys and girls with PFUI,PFUI with double block,concomitant PFUI and iatrogenic anterior urethral strictures.Bulbar ischemia merits substitution urethroplasty,most commonly,using pedicled preputial tube.PFUI in young girls is usually associated with urethrovaginal fistula.Young boys with PFUI commonly have a long gap necessitating trans-abdominal approach.Our success rate with individualised management is 85.60%in primary cases,79.13%in redo cases and 82.40%in cases of bulbar ischemia.Conclusion:The definition of complex PFUI is ever expanding.The best chance of success is at the first attempt.Anastomotic urethroplasty for PFUI should be performed in experienced hands at high volume centres. 展开更多
关键词 Urethral reconstruction Pelvic fracture urethral distraction defects Pelvic fracture urethral injuries Bulbar necrosis Long gap Bladder neck injury Rectourethral fistula
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Applications of stem cells in orthodontics and dentofacial orthopedics:Current trends and future perspectives 被引量:6
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作者 Shiva Safari Arezoo Mahdian Saeed Reza Motamedian 《World Journal of Stem Cells》 SCIE CAS 2018年第6期66-77,共12页
A simple overview of daily orthodontic practice involves use of brackets, wires and elastomeric modules. However, investigating the underlying effect of orthodontic forces shows various molecular and cellular changes.... A simple overview of daily orthodontic practice involves use of brackets, wires and elastomeric modules. However, investigating the underlying effect of orthodontic forces shows various molecular and cellular changes. Also, orthodontics is in close relation with dentofacial orthopedics which involves bone regeneration. In this review current and future applications of stem cells(SCs) in orthodontics and dentofacial orthopedics have been discussed. For craniofacial anomalies, SCs have been applied to regenerate hard tissue(such as treatment of alveolar cleft) and soft tissue(such as treatment of hemifacial macrosomia). Several attempts have been done to reconstruct impaired temporomandibular joint. Also, SCs with or without bone scaffolds and growth factors have been used to regenerate bone following distraction osteogenesis of mandibular bone or maxillary expansion. Current evidence shows that SCs also have potential to be used to regenerate infrabony alveolar defects and move the teeth into regenerated areas. Future application of SCs in orthodontics could involve accelerating tooth movement, regenerating resorbed roots and expanding tooth movement limitations. However, evidence supporting these roles is weak and further studies are required to evaluate the possibility of these ideas. 展开更多
关键词 Alveolar bone grafting Dentofacial DEFORMITIES Distraction osteogenesis Guided tissue regeneration ORTHODONTICS ORTHODONTIC tooth movement ORTHOGNATHIC surgery Periodontitis Root RESORPTION Stem cells
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International recognition of the Ilizarov bone reconstruction techniques: Current practice and research (dedicated to 100th birthday of G. A. Ilizarov) 被引量:10
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作者 Tatiana A Malkova Dmitry Y Borzunov 《World Journal of Orthopedics》 2021年第8期515-533,共19页
The Ilizarov method is one of the current methods used in bone reconstruction.It originated in the middle of the past century and comprises a number of bone reconstruction techniques executed with a ring external fixa... The Ilizarov method is one of the current methods used in bone reconstruction.It originated in the middle of the past century and comprises a number of bone reconstruction techniques executed with a ring external fixator developed by Ilizarov GA.Its main merits are viable new bone formation through distraction osteogenesis,high union rates and functional use of the limb throughout the course of treatment.The study of the phenomenon of distraction osteogenesis induced by tension stress with the Ilizarov apparatus was the impetus for advancement in bone reconstruction surgery.Since then,the original method has been used along with a number of its modifications developed due to emergence of new fixation devices and techniques of their application such as hexapod external fixators and motorized intramedullary lengthening nails.They gave rise to a relatively new orthopedic subspecialty termed“limb lengthening and reconstruction surgery”.Based on a comprehensive literature search,we summarized the recent clinical practice and research in bone reconstruction by the Ilizarov method with a special focus on its modification and recognition by the world orthopedic community.The international influence of the Ilizarov method was reviewed in regard to the origin country of the authors and journal’s rating.The Ilizarov method and other techniques based on distraction osteogenesis have been used in many countries and on all populated continents.It proves its international significance and confirms the greatest contribution of Ilizarov GA to bone reconstruction surgery. 展开更多
关键词 Ilizarov method Ilizarov apparatus Distraction osteogenesis Bone lengthening Bone defect Bone transport ARTHRODESIS
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Interspinous posterior devices: What is the real surgical indication? 被引量:6
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作者 Alessandro Landi 《World Journal of Clinical Cases》 SCIE 2014年第9期402-408,共7页
Interspinous posterior device(IPD) is a term used to identify a relatively recent group of implants used to treat lumbar spinal degenerative disease. This kind of device is classified as part of the group of the dynam... Interspinous posterior device(IPD) is a term used to identify a relatively recent group of implants used to treat lumbar spinal degenerative disease. This kind of device is classified as part of the group of the dynamic stabilization systems of the spine. The concept of dynamic stabilization has been replaced by that of dynamic neutralization of hypermobility, with the intention of clarifying that the primary aim of this kind of system is not the preservation of the movement, but the dynamic neutralization of the segmental hypermobility which is at the root of the pathological condition. The indications for the implantation of an IPD are spinal stenosis and neurogenic claudication, assuming that its function is the enlargement of the neural foramen and the decompression of the roots forming the cauda equina in the central part of the vertebral canal. In the last 10 years, use of these implants has been very common but to date, no long-term clinical follow-up regarding clinical and radiological aspects are available. The high rate of reoperation, recurrence of symptoms and progression of degenerative changes is evident in the literature. If these devices are effectively a miracle cure for lumbar spinal stenosis, why do the utilization and implantation of IPD remain extremely controversial and should they be investigated further? Excluding theproblems related to the high cost of the device, the main problem remains the pathological substrate on which the device is explicit in its action: the degenerative pathology of the spine. 展开更多
关键词 Interspinous POSTERIOR DEVICE Interspinous fusion DEVICE Interspinous DISTRACTION Motion preservation SURGERY SPINE SURGERY MINIMALLY invasive SURGERY
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Relationship of distraction rate with inferior alveolar nerve degeneration-regeneration shift 被引量:3
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作者 Ying-hua Zhao Shi-jian Zhang +4 位作者 Zi-hui Yang Xiao-chang Liu De-lin Lei Jing Li Lei Wang 《Neural Regeneration Research》 SCIE CAS CSCD 2018年第2期360-365,共6页
Distraction osteogenesis is an important technique for the treatment of maxillofacial abnormities and defects. However, distraction osteo- genesis may cause the injury of the inferior alveolar nerve. The relationship ... Distraction osteogenesis is an important technique for the treatment of maxillofacial abnormities and defects. However, distraction osteo- genesis may cause the injury of the inferior alveolar nerve. The relationship between distraction rate and nerve degeneration-regeneration shift remains poorly understood. In this study, 24 rabbits were randomly divided into four groups. To establish the rabbit mandibular distraction osteogenesis model, the mandibles of rabbits in distraction osteogenesis groups were subjected to continuous osteogenesis dis- traction at a rate of 1.0, 1.5 and 2.0 mm/d, respectively, by controlling rounds of screwing each day in the distractors. In the sham group, mandible osteotomy was performed without distraction, Pin-prick test with a 10 g blunt pin on the labium, histological and histomorpho- metric analyses with methylene blue staining, Bodian's silver staining, transmission electron microscopy and myelinated fiber density of inferior alveolar nerve cross-sections were performed to assess inferior alveolar nerve conditions. At 28 days after model establishment, in the pin-prick test, the inferior alveolar nerve showed no response in the labium to a pin pricks in the 2 mm/d group, indicating a severe dysfunction. Histological and histomorphometric analyses indicated that the inferior alveolar nerve suffered more degeneration and in- juries at a high distraction rate (2 mm/d). Importantly, the nerve regeneration, indicated by newborn Schwann cells and axons, was more abundant in 1.0 and 1.5 mm/d groups than in 2.0 mm/d group. We concluded that the distraction rate was strongly associated with the inferior alveolar nerve function, and the distraction rates of !.0 and 1.5 mm/d had regenerative effects on the inferior alveolar nerve. This study provides an experimental basis for the relationship between distraction rate and nerve degeneration-regeneration shift during dis- traction osteogenesis, and may facilitate reducing nerve complications during distraction osteogenesis. 展开更多
关键词 nerve regeneration distraction osteogenesis stress nerve degeneration DEMYELINATION nerve histomorphometry inferior alveolar nerve transmission electron microscopy MANDIBLE rabbit neural regeneration
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Ilizarov bone transport combined with the Masquelet technique for bone defects of various etiologies (preliminary results) 被引量:6
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作者 Dmitry Y Borzunov Sergey N Kolchin +1 位作者 Denis S Mokhovikov Tatiana A Malkova 《World Journal of Orthopedics》 2022年第3期278-288,共11页
BACKGROUND The Ilizarov bone transport(IBT)and the Masquelet induced membrane technique(IMT)have specific merits and shortcomings,but numerous studies have shown their efficacy in the management of extensive long-bone... BACKGROUND The Ilizarov bone transport(IBT)and the Masquelet induced membrane technique(IMT)have specific merits and shortcomings,but numerous studies have shown their efficacy in the management of extensive long-bone defects of various etiologies,including congenital deficiencies.Combining their strong benefits seems a promising strategy to enhance bone regeneration and reduce the risk of refractures in the management of post-traumatic and congenital defects and nonunion that failed to respond to other treatments.AIM To combine IBT and IMT for the management of severe tibial defects and pseudarthrosis,and present preliminary results of this technological solution.METHODS Seven adults with post-traumatic tibial defects(subgroup A)and nine children(subgroup B)with congenital pseudarthrosis of the tibia(CPT)were treated with the combination of IMT and IBT after the failure of previous treatments.The mean number of previous surgeries was 2.0±0.2 in subgroup A and 3.3±0.7 in subgroup B.Step 1 included Ilizarov frame placement and spacer introduction into the defect to generate the induced membrane which remained in the interfragmental gap after spacer removal.Step 2 was an osteotomy and bone transport of the fragment through the tunnel in the induced membrane,its compression and docking for consolidation without grafting.The outcomes were retrospectively studied after a mean follow-up of 20.8±2.7 mo in subgroup A and 25.3±2.3 mo in subgroup B.RESULTS The“true defect”after resection was 13.3±1.7%in subgroup A and 31.0±3.0%in subgroup B relative to the contralateral limb.Upon completion of treatment,defects were filled by 75.4±10.6%and 34.6±4.2%,respectively.Total duration of external fixation was 397±9.2 and 270.1±16.3 d,including spacer retention time of 42.4±4.5 and 55.8±6.6 d,in subgroups A and B,respectively.Bone infection was not observed.Postoperative complications were several cases of pin-tract infection and regenerate deformity in both subgroups.Ischemic regeneration was observed in two cases of subgroup B.Complications were corrected during the course of treatment.Bone union was achieved in all patients of subgroup A and in seven patients of subgroup B.One non-united CPT case was further treated with the Ilizarov compression method only and achieved union.After a follow-up period of two to three years,refractures occurred in four cases of united CPT.CONCLUSION The combination of IMT and IBT provides good outcomes in post-traumatic tibial defects after previous treatment failure but external fixation is longer due to spacer retention.Refractures may occur in severe CPT. 展开更多
关键词 Ilizarov bone transport Induced membrane technique Post-traumatic tibial defect Congenital pseudarthrosis of the tibia Distraction osteogenesis Regeneration
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Treatment of C2 body fracture with unusual distractive and rotational components resulting in gross instability 被引量:3
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作者 Darryl Lau Samuel S Shin +1 位作者 Rakesh Patel Paul Park 《World Journal of Orthopedics》 2013年第4期323-326,共4页
Cervical fractures can result in severe neurological compromise and even death. One of the most commonly injured segments is the C2 vertebrae, which most frequently involves the odontoid process. In this report, we pr... Cervical fractures can result in severe neurological compromise and even death. One of the most commonly injured segments is the C2 vertebrae, which most frequently involves the odontoid process. In this report, we present the unusual case of a 28-year-old female who sustained a C2 vertebral body fracture(comminuted transverse fracture through the body and both transverse processes) that had both a significant distractive and rotational component, causing the fracture to be highly unstable. Application of halo bracing was unsuccessful. The patient subsequently required a C1-C4 posterior spinal fusion. Follow-up computer tomography imaging confirmed fusion and the patient did well clinically thereafter. 展开更多
关键词 C2 Distractive ODONTOID FRACTURE Rotational SPINE TypeⅢ Unstable
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Trifocal distraction osteogenesis for reconstruction of skull defect 被引量:1
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作者 Ke Ke Hai-Song Xu Zhi-Hong Fan 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2013年第8期644-648,共5页
Objective: To apply trifocal distraction osteogenesis in canine model of skull segmental defects and to provide reference for clinical treatment. Methods: Six labrador dogs were selected in this study and divided into... Objective: To apply trifocal distraction osteogenesis in canine model of skull segmental defects and to provide reference for clinical treatment. Methods: Six labrador dogs were selected in this study and divided into observation group and control group randomly. Each group contained 3 dogs. Skull segmental defects models were established by surgery, and dogs in bservation group received trifocal distraction osteogenesis treatment. Bone density was observed and compared between two groups during treatment. Results: There were no significant difference in bone density between two groups on th 1st day ( P>0.05). The bone density of observation group on the 30th day, and 60th day were higher than that of control group ( P<0.01). Conclusions: Trifocal distraction osteogenesis has significant clinical effect, and it would be widely used in clinical treatment. 展开更多
关键词 Trifocal DISTRACTION OSTEOGENESIS SKULL SEGMENTAL DEFECTS DOG
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Using quality improvement methods to increase use of pain prevention strategies for childhood vaccination 被引量:3
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作者 Jennifer Verrill Schurman Amanda D Deacy +6 位作者 Rebecca J Johnson Jolynn Parker Kristi Williams Dustin Wallace Mark Connelly Lynn Anson Kevin Mroczka 《World Journal of Clinical Pediatrics》 2017年第1期81-88,共8页
AIM To increase evidence-based pain prevention strategy use during routine vaccinations in a pediatric primary care clinic using quality improvement methodology.METHODS Specific intervention strategies(i.e.,comfort po... AIM To increase evidence-based pain prevention strategy use during routine vaccinations in a pediatric primary care clinic using quality improvement methodology.METHODS Specific intervention strategies(i.e.,comfort positioning,nonnutritive sucking and sucrose analgesia,distraction) were identified,selected and introduced in three waves,using a Plan-Do-Study-Act framework.System-wide change was measured from baseline to post-intervention by:(1) percent of vaccination visits during which an evidence-based pain prevention strategy was reported as being used; and(2) caregiver satisfaction ratings following the visit.Additionally,self-reported staff and caregiver attitudes and beliefs about pain prevention were measured at baseline and 1-year post-intervention to assess for possible long-term cultural shifts.RESULTS Significant improvements were noted post-intervention.Use of at least one pain prevention strategy was documented at 99% of patient visits and 94% of caregivers were satisfied or very satisfied with the pain prevention care received.Parents/caregivers reported greater satisfaction with the specific pain prevention strategy used [t(143) = 2.50,P ≤ 0.05],as well as greater agreement that the pain prevention strategies used helped their children's pain [t(180) = 2.17,P ≤ 0.05] and that they would be willing to use the same strategy again in the future [t(179) = 3.26,P ≤ 0.001] as compared to baseline.Staff and caregivers also demonstrated a shift in attitudes from baseline to 1-year post-intervention.Specifically,staff reported greater agreement that the pain felt from vaccinations can result in harmful effects [2.47 vs 3.10; t(70) =-2.11,P ≤ 0.05],less agreement that pain from vaccinations is "just part of the process" [3.94 vs 3.23; t(70) = 2.61,P ≤ 0.05],and less agreement that parents expect their children to experience pain during vaccinations [4.81 vs 4.38; t(69) = 2.24,P ≤ 0.05].Parents/caregivers reported more favorable attitudes about pain prevention strategies for vaccinations across a variety of areas,including safety,cost,time,and effectiveness,as well as less concern about the pain their children experience with vaccination [4.08 vs 3.26; t(557) = 6.38,P ≤ 0.001],less need for additional pain prevention strategies [3.33 vs 2.81; t(476) = 4.51,P ≤ 0.001],and greater agreement that their doctors' office currently offers pain prevention for vaccinations [3.40 vs 3.75; t(433) =-2.39,P ≤ 0.05].CONCLUSION Quality improvement methodology can be used to help close the gap in implementing pain prevention strategies during routine vaccination procedures for children. 展开更多
关键词 PEDIATRICS Quality improvement DISTRACTION PAIN management IMMUNIZATION VACCINATION Sucrose analgesia PAIN prevention Non-nutritive SUCKING Comfort positioning Primary care
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