نتایج جستجو برای: compression fracture

تعداد نتایج: 181394  

In this paper, experimental and Finite Element Methods have been used to determine mechanical properties of nanocomposites. Standard tensile and compression samples with 0.0, 0.15, 0.25, 0.35, 0.45, and 0.55 weight fraction of Multi-Walled Carbon Nanotube (MWCNT) were prepared and tested. Nanotube weight fraction was varied to investigate the effects of nanotube weight fraction on nanocomposite...

Journal: :Pain physician 2000
G Chandler G Dalley J Hemmer T Seely

At the Specialty Clinics of Georgia we have been evaluating the comparative efficacy of the Gray Ramus Communicans Nerve Block for the treatment of painful osteoporotic vertebral compression fracture. The relative frequency of Thoracic and Lumbar fractures being equal, we began to ask the question why was the utilization of the Gray Ramus Communicans Nerve Block more frequent for a lumbar verte...

Journal: :The Journal of the Canadian Chiropractic Association 2012
John A Papa

OBJECTIVE To chronicle the conservative treatment and management of an osteoporotic patient presenting with acute back pain resulting from a lumbar compression fracture. CLINICAL FEATURES A 74-year old male presented with acute back pain in the thoracolumbar region after an episode of lifting. Radiographic evaluation revealed generalized demineralization and a moderate wedge compression fract...

2017
Robert E Jacobson Ovidiu Palea Michelle Granville

It is well recognized that patients can develop additional vertebral compression fractures (VCF) in an adjacent vertebra or at another vertebral level after successful vertebral augmentation. Factors such as the patient's bone mineral density, post procedure activity, and chronic corticosteroid use contribute to an increased risk of re-fracture or development of new fractures in the first three...

Journal: :Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists 2010
Stefan Müller-Hülsbeck Philipp J Schäfer Nikolas Charalambous Hiroshi Yagi Martin Heller Thomas Jahnke

PURPOSE To examine and compare in an ex vivo study different nitinol stent designs intended for the superficial femoral artery (SFA) with regard to the appearance of fracture. METHODS Seven different 8-×40-mm nitinol stents were evaluated (Misago, Absolute, Smart, Luminexx, Sentinol, Lifestent NT, and Sinus-Superflex). Finite element analysis (FEA) was used for digitalized stent design compar...

2012
Sang Moon Hong Tae Wan Kim Kwan Ho Park

Multiple myeloma is a B-cell origin tumor characterized by hypercalcemia, osteolytic bony lesions, and pathologic fractures. Back pain is one of the most common presenting symptoms of multiple myeloma and about 60% of patients have vertebral involvement at the time of diagnosis7). Minimally invasive surgeries such as vertebroplasty and kyphoplasty are effective to relieve pain and improve the q...

2008
R. Q. Yang J. T. Fan S. X. Li Z. F. Zhang

Fracture behavior of Zr55Cu30Al10Ni5 bulk metallic glass was investigated under quasi-static compression at strain rate of 10/s using an Instron testing machine and dynamic split Hopkinson bar (SHPB) compression with strain rate of about 1900–4300/s. Pronounced strain softening, especially past the peak stress, was observed under SHPB tests and compared with the distinct flow serrations under q...

Journal: :Orthopedics 2013
Minjie Shen Heng Wang Guangdong Chen Minfeng Gan Quan Yuan Zhidong Wang Ling Liu Huilin Yang

This article describes the independent factors that affect kyphotic angle reduction in the treatment of osteoporotic vertebral compression fractures with kyphoplasty. Between January 2008 and September 2011, one hundred twenty-six patients with a single-level osteoporotic compression fracture who underwent kyphoplasty were evaluated for a minimum of 1 year postoperatively. Nine independent vari...

2018
Wenzhao Xing Wei Lin Jia Dai Zhigang Kong Yanfeng Wang Lei Sun Zhiguo Zhang Liang Sun

BACKGROUND Distal femur fractures are difficult to manage, and the selection of implant approach for internal fixation remains controversial. This study explores the clinical outcome of treating distal femoral fractures with a locking compression plate using a posteriolateral novel approach. METHODS Twenty patients with distal femoral fractures were included in our study, and all patients und...

2017
Allison R Kenzig James R Butler Lauren B Priddy Kristen R Lacy Steven H Elder

BACKGROUND Fracture of the ilium is common orthopedic injury that often requires surgical stabilization in canine patients. Of the various methods of surgical stabilization available, application of a lateral bone plate to the ilium is the most common method of fixation. Many plating options are available, each having its own advantages and disadvantages. The purpose of this study was to evalua...

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