Results 71 to 80 of about 391,853 (196)

Lag screw fixation in midface fractures.

, 2005
Through analysis of case series from medical record review, this article demonstrates how lag screw fixation may be used to effectively treat obliquely oriented maxillary, zygomatic, and orbital rim fractures.
Pribitkin, Edmund A, Cognetti, David M, Marshall, Stephen N, Bilyk, Jurij   +3 more
core   +1 more source

Biomechanical evaluation of different screw fixation methods for Ogawa type I coracoid process base fracture

JSES International
Background: The internal fixation of Ogawa type I coracoid fractures is relatively difficult, and there is no consensus on the fixation method, which is also prone to screw cutout.
Yiwen Tan, MD, Zhao Tan, MD, Hu Zhang, PhD, Fangfang Mou, MD   +3 more
doaj   +1 more source

Comparison of mechanical stability of modified pedicle screw fixator and unilateral lumbopelvic fixation for treating sacroiliac joint disruption: A finite element analysis study

Acta Orthopaedica et Traumatologica Turcica
Objective: This study aimed to investigate the mechanical stability of a modified pedicle screw fixator and compare it with unilateral lumbopelvic fixation for treating sacroiliac joint disruption using finite element simulation technology.
Jun Zhang, Yan Wei, Baoqing Yu, JianWang, Weizhong Yin   +4 more
doaj   +1 more source

Transpedicular screw fixation in the thoracic and lumbar spine with a novel cannulated polyaxial screw system

, 2008
Lutz Weise, Olaf Suess, Thomas Picht, Theodoros KombosNeurochirurgische Klinik, Charité – Universitätsmedizin Berlin, Berlin, GermanyObjective: Transpedicular screws are commonly and successfully used for posterior fixation ...
Lutz Weise, Theodoros Kombos, Thomas Picht, Olaf Suess   +3 more
core  

Comparison of short-segment monoaxial and polyaxial pedicle screw fixation combined with intermediate screws in traumatic thoracolumbar fractures: a finite element study and clinical radiographic review

Clinics
OBJECTIVES: No studies have compared monoaxial and polyaxial pedicle screws with regard to the von Mises stress of the instrumentation, intradiscal pressures of the adjacent segment and adjacent segment degeneration.
Hongwei Wang, Yiwen Zhao, Zhongjun Mo, Jianda Han, Yu Chen, Hailong Yu, Qi Wang, Jun Liu, Changqing Li, Yue Zhou, Liangbi Xiang   +10 more
doaj   +1 more source

Study of Bone-screw Surface Fixation in Lumbar Dynamic Stabilization

, 2015
Background: We aimed to use the animal model of dynamic fixation to examine the interaction of the pedicle screw surface with surrounding bone, and determine whether pedicle screws achieve good mechanical stability in the vertebrae. Methods: Twenty-four
Guo-Min Liu, Yun-Gang Luo, Tao Yu, Nan Yang   +3 more
core   +1 more source

Increasing the angle between caudal screw and the transverse plane may aggravate the risk of femoral head necrosis by deteriorating the fixation stability in patients with femoral neck fracture

European Journal of Medical Research
Necrosis of the femoral head is the main complication in femoral neck fracture patients with triangle cannulated screw fixation. Instant postoperative fixation instability is a main reason for the higher risk of femoral head necrosis.
Jian Zhang, Shengyu Wan, Xiaozhong Luo, Caidong Zhang, Chao Wu, Lipeng He, Jingchi Li   +6 more
doaj   +1 more source

Biomechanical comparison of headless antegrade screw versus retrograde cortical screw for coronoid fracture fixation

, 2015
Objective: Posterior-to-anterior directed screws are stronger than anterior-to-posterior directed screws for coronoid fracture fixation. Anterior approaches that facilitate direct reduction and fixation of coronoid fractures have been described.
KARAKAŞLI, AHMET, HAPA, ONUR, Dincer, Cemal, Guvencer, Mustafa, Zhamilov, Vadym, HAVITÇIOĞLU, HASAN, Ahmet Karakasli, Hasan Havitcioglu, Cemal Dincer, Vadym Zhamilov, Onur Hapa, Mustafa Guvencer   +11 more
core   +1 more source

The Influence of Design Features in the Biomechanical Performance of a Fixator for the Lumbar Spine [PDF]

, 1997
PhDSpinal fixation systems using pedicular screws have gained popularity in manging the damaged spine. However, the loading to which individual components of a fixator are exposed are largely unknown.
Alkalay, R.N., Alkalay, Ron N.
core   +1 more source

Comparison of Surgical Outcomes Following Percutaneous Pedicle Screw Fixation and Traditional Open Pedicle Screw Fixation for Thoracolumbar Fractures Without Neurological Deficit

Journal of Nepal Health Research Council
Background: Traumatic thoracolumbar fractures are frequently encountered in blunt trauma patients. The Open pedicle screw fixation has been proven to be effective in stabilizing fractures, deformity correction, early mobilization and improving long term
Kumar Paudel, Somraj Lamichhane, Rajiv Jha   +2 more
doaj   +1 more source