نتایج جستجو برای: composite screw

تعداد نتایج: 137496  

Journal: :Journal of orthopaedic trauma 2011
Philip R Wolinsky Douglas Dennis Brett D Crist Shane Curtiss Scott J Hazelwood

OBJECTIVE To determine if 1) angularly stable devices created by compressing ("locking") proximal locking screws to intramedullary nails using end caps or compression screws or 2) increasing the number of proximal screws from two to three increases the stiffness of intramedullary constructs that stabilize proximal third tibia fractures in a nonosteopenic bone model. METHODS Four proximal lock...

2011

The present study focussed on the use of Foxtail millet (Setaria italica) along with other flour for production of ready-to-eat snack products using extrusion cooking. The ultimate objective is to add value to millet and other subtropical crops to enable their commercialisation and thereby provide additional livelihood opportunities to the farmers in semi‐arid regions. Composite flours were pre...

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Dissimilar joint with good quality and mechanical properties is one of the major problems the industries. One of the most commonly used methods to solve this problem is friction stir welding process. In this paper two different tool pin with simple cylindrical and screwed profile were used to finding optimization of friction stir welding parameters to reach best mixing flow, composite structure...

2013
Saravana Vail Karuppiah Alan Johnstone Johnstone

Introduction: The indications for intramedullary nail fixation of fractures of the femoral shaft have been greatly expanded by techniques of interlocking nailing. However, distal locking screw fixation remains the most technically demanding and problematic portion of the procedure and maybe responsible for as much as one-half of the exposure of the surgeon’s hands to radiation during the proced...

ژورنال: :مجله دانشکده پزشکی اصفهان 0
علی عندلیب دانشیار، گروه ارتوپدی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران ایمان دلاوری دستیار، گروه ارتوپدی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران علی مهرابی کوشکی اپیدمیولوژیست، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

مقدمه: در شکستگی های اینترتروکانتریک، وسیله ای که بیش از همه مورد استفاده قرار می گیرد، dynamic hip screw (dhs) می باشد، اما مطالعات متعددی نتایج خوبی از این وسیله در شکستگی های transverse و reverse-oblique گزارش نکرده اند. این مطالعه با هدف مقایسه ی نتایج فیکس کردن شکستگی های اینترتروک reverse-oblique و ساب تروکانتریک short segment با استفاده از dhs و dynamic condylar screw (dcs) در بیماران مر...

Journal: :Journal of orthopaedic trauma 2008
Kenneth J Wilkens Shane Curtiss Mark A Lee

OBJECTIVES Uniaxial, first-generation locking plates have become increasingly popular for fixation of supracondylar femur fractures. Polyaxial plates are currently available, which allow for variable-angle screw insertion; however, the biomechanical integrity of these new locking constructs is yet unproven. This study compares the mechanical stability of a conventional locking plate with that o...

2012
Jan Wieding Robert Souffrant Andreas Fritsche Wolfram Mittelmeier Rainer Bader

The use of finite element analysis (FEA) has grown to a more and more important method in the field of biomedical engineering and biomechanics. Although increased computational performance allows new ways to generate more complex biomechanical models, in the area of orthopaedic surgery, solid modelling of screws and drill holes represent a limitation of their use for individual cases and an inc...

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Dissimilar joint with good quality and mechanical properties is one of the major problems the industries. One of the most commonly used methods to solve this problem is friction stir welding process. In this paper two different tool pin with simple cylindrical and screwed profile were used to finding optimization of friction stir welding parameters to reach best mixing flow, composite structure...

2016
Richard Bostelmann Hans Jakob Steiger Armin O. Scholz

BACKGROUND Spontaneous infectious spondylodiscitis is a rare, but serious disease with the risk of progressive neurological impairment. The surgical approach to spontaneous infectious spondylodiscitis is in most cases an anterior debridement and fusion, often in staged surgeries. Here we report a case of single-stage posterior debridement and posterior instrumented fusion in combination with an...

Journal: :Advances in Civil Engineering 2022

Push-out-shear tests were used in this study to analyze lag screw connections timber-concrete composite (TCC) slabs based on the embedment depth. The goal of research is look into relationship between shear capacity and depth TCC, as well investigate strength wood. Experiments carried out at different depths (5.08 cm, 7.0 8.9 cm). prepared samples examined order determine failure modes provide ...

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