نتایج جستجو برای: angle of cervical convergence

تعداد نتایج: 21195053  

Journal: :Turkish neurosurgery 2018
Halil Ibrahim Secer Ferhat Harman Murat Hamit Aytar Serdar Kahraman

AIM Some restriction and complications, such as progression of kyphosis, incidence of axial neck pain and decrease of postoperative cervical range of motion are concern. We designed this retrospective clinical study to evaluate the effect of laminoplasty by preserving the muscle attachments of C2 and C7 spinous processes on range of motion (ROM), axial neck pain and cervical lordosis. MATERIA...

Journal: :مجله دندانپزشکی 0
حسن رزمی h. razmi اشکان یوسفی a . yousefi

statement of problem: the goal of a successful endodontic surgery is to establish an adequate seal in apical region. therefore during surgery, root-end resection is essential for an appropriate situation and proper access.purpose: the aim of this study was to determine the most appropriate root-end resection angle to establish adequate apical seal in periapical surgerymaterials and methods: for...

2016
Hua Chen Hao Liu Yuxiao Deng Quan Gong Tao Li Yueming Song Patrick Wall.

Retrospective case-control study.Unilateral expansive open-door cervical laminoplasty with miniplate fixation is an efficient and increasing popular surgery for multilevel cervical spondylotic myelopathy. Axial symptoms are the most frequent complaints after cervical laminoplasty. But the mechanisms have not been fully clarified yet.The objective of this study is to compare the clinical and rad...

Journal: :Harran Üniversitesi týp fakültesi dergisi 2023

Background: The aims of this study were to: (i) to analyze the morphometric characteristics cervical vertebral column in sagittal plane; and (ii) compare methods used for determinating lordosis angle. Materials Methods: Direct radiographs 175 adults analyzed angle was evaluated by Cobb (C2-C7), central angle, posterior tangent, Risser & Ferguson methods. In addition, occipitocervical (o...

Journal: :Acta orthopaedica Belgica 2014
Aditya Aggarwal Anuj Jain Nitesh Jajoida Raj Nand Sudhir Kumar Chandra Kumar

OBJECTIVE Observation of post treatment kyphotic angle in patient of cervical spine tuberculosis managed non operatively. BACKGROUND The incidence of tuberculosis of cervical spine is about 6-9%. The most dreaded complications of spinal tuberculosis are neural involvement and spinal deformity. Due to destruction of the vertebra tuberculosis of spine usually leads to variable amount of kyphoti...

Journal: :Vision Research 1995
Han Collewijn Casper J. Erkelens Robert M. Steinman

We studied the dynamics of voluntary, horizontal, binocular gaze-shifts between pairs of continuously visible, real three-dimensional targets. Subjects were stabilized on a biteboard to allow full control of target angles, which were made to differ only in distance (pure vergence), only in direction (pure version; conjugate saccades) or in both distance and direction (disjunctive saccades). A w...

2011
Krishnapundha Bunyaratavej Surachai Khaoroptham

Reduction of traumatic unilateral locked facets of the cervical spine can be accomplished by closed or open means. If closed reduction is unsuccessful, then open reduction is indicated. The previously described techniques of open reduction of a unilateral locked facets of the cervical spine in the literature included drilling facet, forceful manipulation or using special equipment. We describe ...

2017
Wei Liu Jin Fan Jianling Bai Pengyu Tang Jian Chen Yongjun Luo Kuai Zhou Weihua Cai

BACKGROUND AND OBJECTIVES Convincing evidence supporting the use of magnetic resonance imaging (MRI) as an effective tool for evaluating cervical sagittal alignment is lacking. This study aims to analyze the differences and correlations between cervical sagittal parameters on x-ray and MRI in patients with cervical disc herniation and to determine whether MRI could substitute for cervical x-ray...

Journal: :Journal of vision 2006
Jeffrey A Saunders Benjamin T Backus

When a surface covered with a regular texture is viewed in perspective, the projected texture provides a number of cues to 3D surface orientation. For oriented textures, one cue is perspective convergence: symmetry lines that are parallel along the surface project to lines that vary systematically in orientation. We investigated the contribution of perspective convergence to perception of 3D sl...

2012
Lara Jansiski Motta Raquel Agnelli Mesquita-Ferrari Sandra Kalil Bussadori

Aim: To evaluate the effect to the degree of temporomandibular dysfunctions (TMD) in adolescents and occlusal classes in the cervical posture. Methods: A cross-section, observational study was carried out, in which 296 adolescents took part. For the evaluation, the patients were divided into groups according to the presence and severity of the TMD, using the Helkimo questionnaire and occlusal A...

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