نتایج جستجو برای: vitreopapillary traction

تعداد نتایج: 10869  

Journal: :The Israel Medical Association journal : IMAJ 2009
Samia Fatum Aaron Trevino Avinoam Ophir

BACKGROUND The causative role of diffuse macular edema in various etiologies is often undetermined. OBJECTIVES To describe an association between extrafoveal vitreous traction and non-diabetic diffuse macular edema secondary to various ocular entities. METHODS In a retrospective study of eyes with non-diabetic diffuse macular edema, charts and optical coherence tomography scans demonstratin...

2017
Hao Li Liping Chen Tao Wang Shaogang Wang Jihong Liu

We performed this study to evaluate the effect of cavernous nerve (CN) traction on erectile function in rats. Thirty-two 8- week-old Sprague-Dawley rats were divided into four groups: control, 1-minute CN traction, 2-minute CN traction, and 2-minute CN crush. CN traction was performed using a glass hook with a tensile force of 0.2 Newton. One month later, the mean arterial pressure (MAP) and in...

Journal: :Gut 1994
N K Ahluwalia D G Thompson J Barlow L Heggie

Small intestinal intraluminal pressure activity and aboral traction forces were explored in 19 healthy volunteers using a combined manometry and traction force detecting assembly sited in the upper small intestine. Each aboral traction event was classified as being associated with either a propagating or a stationary contraction and its force measured. During phase I no contractions or traction...

2010
Alberto Consolaro

Professionals who resist and restrict the indication of orthodontic traction, especially canine traction, often justify their stance by citing the following reasons: 1) Lateral Root Resorption in lateral incisors and premolars. 2) External Cervical Resorption of canines due to canine traction. 3) Alveolodental ankylosis of the canine(s) involved in the process. 4) Calcific metamorphosis of the ...

Journal: :Physical review letters 2012
Aaron F Mertz Shiladitya Banerjee Yonglu Che Guy K German Ye Xu Callen Hyland M Cristina Marchetti Valerie Horsley Eric R Dufresne

To understand how the mechanical properties of tissues emerge from interactions of multiple cells, we measure traction stresses of cohesive colonies of 1-27 cells adherent to soft substrates. We find that traction stresses are generally localized at the periphery of the colony and the total traction force scales with the colony radius. For large colony sizes, the scaling appears to approach lin...

2013
Jeremy J. McVay

Background and Purpose: Cervical traction has been used for more than 50 years for the treatment of cervical disk pathology. However, there is a paucity of research in regard to the use of postoperative traction following surgery. The purpose of this case series is to describe evidence-based treatment using cervical traction for herniated nucleus pulposus (HNP) after anterior cervical discectom...

Journal: :فیزیک زمین و فضا 0
عبداله سهرابی بیدار استادیار، دانشکده زمین شناسی، دانشگاه تهران، ایران محسن کمالیان دانشیار، پژوهشکده مهندسی ژئوتکنیک، پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله، تهران، ایران محمد کاظم جعفری استاد، پژوهشکده مهندسی ژئوتکنیک، پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله، تهران، ایران

it is well established that the seismic ground response of surface topographies may differ from those of free field motion during earthquakes. complex nature of seismic wave scattering by topographical structures can only be solved accurately and economically using advanced numerical methods under realistic conditions. among the numerical methods, the boundary element is a powerful numerical te...

Journal: :Orthopedics 2012
Fang-Chieh Lien

Open reduction and internal fixation is used to treat complex acetabular fractures. Traction on the femur is necessary to reduce the acetabulum and is accomplished by surgical assistants or with mechanical devices. To overcome the disadvantages of various traction methods, the author designed a simple, novel traction device that can be used on an ordinary orthopedic or radiolucent operating tab...

Journal: :The Journal of orthopaedic and sports physical therapy 2014
Julie M Fritz Anne Thackeray Gerard P Brennan John D Childs

STUDY DESIGN Randomized clinical trial. OBJECTIVES To examine the effectiveness of cervical traction in addition to exercise for specific subgroups of patients with neck pain. BACKGROUND Cervical traction is frequently used, but its effectiveness has not been adequately examined. Existing studies have failed to target patients most likely to respond. Traction is typically recommended for pa...

2015
Jong Ho Kang Tae-Sung Park

[Purpose] The purpose of this study was to analyze cervical muscle activity at different traction forces of an air-inflatable neck traction device. [Subjects] Eighteen males participated in this study. [Methods] The subjects put on an air-inflatable neck traction device and the traction forces administered were 40, 80, and 120 mmHg. The electromyography (EMG) signals of the splenius capitis, an...

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