نتایج جستجو برای: shaft angle

تعداد نتایج: 140630  

2015
Yasuaki Nakagawa Shogo Mukai Hiromitsu Yabumoto Eri Tarumi Takashi Nakamura

OBJECTIVES The aim of this study was to examine the relationship between cartilage, ligament, and meniscus degeneration and radiographic alignment in severe varus knee osteoarthritis in order to understand the development of varus knee osteoarthritis. DESIGN Fifty-three patients (71 knees) with primary varus knee osteoarthritis and who underwent total knee arthroplasty were selected for this ...

Journal: :The Journal of bone and joint surgery. British volume 1994
P T Simonian J R Chapman H S Selznick S K Benirschke B F Claudi M F Swiontkowski

We have reviewed our experience of four iatrogenic femoral neck fractures in 315 consecutive closed intramedullary nailings with the AO/ASIF universal femoral nail. The average neck-shaft angle in the bones that fractured was 139.3 degrees +/- 1.2 degrees SD (136 to 141); in the whole series the average neck-shaft angle was 125.3 degrees +/- 8.6 degrees and only 11 had angles of more than 135 d...

2016
I. Hujazi T. Jones S. Johal P. Bearcroft G. Muniz-Terra V. Khanduja

The aim of this study is to measure the ischiofemoral distance (IFD) in the normal hip with healthy surrounding soft tissues and describe its variations caused by gender, age and proximal femoral anatomy so that this could serve as a reference for future studies on this subject. This is a retrospective study in which we reviewed the CT scans of 149 patients (298 hips) who had a CT of their pelv...

Journal: :FEBS letters 2009
Yuko Iko Kazuhito V Tabata Shouichi Sakakihara Takako Nakashima Hiroyuki Noji

F1-ATPase (F1) is a reversible ATP-driven rotary motor protein. When its rotary shaft is reversely rotated, F1 produces ATP against the chemical potential of ATP hydrolysis, suggesting that F1 modulates the rate constants and equilibriums of catalytic reaction steps depending on the rotary angle of the shaft. Although the chemomechanical coupling scheme of F1 has been determined, it is unclear ...

Journal: :razavi international journal of medicine 0
hassan rahimi orthopedic research center, mashhad university of medical sciences, mashhad, ir iran mohammad gharehdaghi orthopedic research center, mashhad university of medical sciences, mashhad, ir iran; orthopedic research center, school of medicine, mashhad university of medical sciences, mashhad, ir iran. tel: +98-5118523300, fax: +98-5118549234 ali birjandinejad research and education department, razavi hospital, mashhad, ir iran masoud mirkazemi research and education department, razavi hospital, mashhad, ir iran hamidreza azimi dental research center, faculty of dentistry, mashhad univercity of medical sciences, mashhad, ir iran

background femur fracture is one of the most common fractures in children. certain parameters such as the patient’s age, the exact location of fracture, type of fracture, the mechanism of fracture, and the accompanying injuries determine which one of the many treatment techniques be used in each case. objectives we aimed to compare the results of close and open techniques in pediatric femoral s...

Journal: :American journal of physical anthropology 1999
E Trinkaus C B Ruff G C Conroy

The probably Middle Pleistocene human femur from Berg Aukas, Namibia, when oriented anatomically and analyzed biomechanically, presents an unusual combination of morphological features compared to other Pleistocene Homo femora. Its midshaft diaphyseal shape is similar to most other archaic Homo, but its subtrochanteric shape aligns it most closely with earlier equatorial Homo femora. It has an ...

Journal: :Sports biomechanics 2008
Ian C Kenny Eric S Wallace Steve R Otto

The aim of this study was to determine how shaft length affects golf driving performance. A range of drivers with lengths between 1.168 m and 1.270 m, representing lengths close to the 1.219 m limit imposed by R&A Rules Limited (2008), were assembled and evaluated. Clubhead and ball launch conditions and drive distance and accuracy were determined for seven category 1 golfers (handicaps 0.21 +/...

Journal: :Clinical Orthopaedics and Related Research 2009
Andrea Emilio Salvi

UNLABELLED Early failures after hip resurfacing often are the result of technical errors in placing the femoral component. We asked whether image-free computer navigation decreased the number of outliers compared with the conventional nonnavigated technique. We retrospectively compared 51 consecutive hip resurfacings performed using image-free computer navigation with 88 consecutive hip resurfa...

2016
Yong-Jiao Wang Lei Liang Yin-Quan Yuan Gang Xu Fang Liu

By fixing two FBGs on the surface of a rotating shaft along the direction of ± 45° and using dynamic wavelength demodulation technology, we propose an optical fiber sensing system to monitor the driving torque and torsion angle of the rotating shaft. In theory, the dependence relation of the dynamic difference of central wavelengths on the torque and torsion angle of the rotating shaft has been...

Journal: :تحقیقات مهندسی کشاورزی 0
محمدرضا قاسمی بوسجین دانشجوی کارشناسی ارشد سیدسعید محتسبی دانشیار دانشکده مهندسی بیوسیستم پردیس کشاورزی و منابع طبیعی دانشگاه تهران منصور بهروزی لار استاد دانشکده مهندسی بیوسیستم پردیس کشاورزی و منابع طبیعی دانشگاه تهران حجت احمدی استادیار دانشکده مهندسی بیوسیستم پردیس کشاورزی و منابع طبیعی دانشگاه تهران

in this research, the total torque input and output shafts were subjected to are used to formulate twodifferential equations using applied dynamics and fluid mechanics. the equations show that the input andoutput torques are a function of the constant geometrical parameters of a torque converter, includinginternal and external diameters of vanes, angle and length of vanes, cross section area be...

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