Results 41 to 50 of about 130,441 (138)

Time-dependent behaviour of bone accentuates loosening in the fixation of fractures using bone-screw systems [PDF]

, 2018
AimsLoosening is a well-known complication in the fixation of fractures using devices such as locking plates or unilateral fixators. It is believed that high strains in the bone at the bone-screw interface can initiate loosening, which can result in ...
Manda, Krishnagoud, Pankaj, Pankaj, Pankaj, P., Xie, S., Manda, K., Xie, Shuqiao   +5 more
core   +1 more source

Incidence and Risk Factors of the Caudal Screw Loosening after Pelvic Fixation for Adult Spinal Deformity: A Systematic Review and Meta-analysis [PDF]

Asian Spine Journal
The purpose of this study was to assess the factors affecting caudal screw loosening after spinopelvic fixation for adult patients with spinal deformity.
Jian Zhao, Zheng Nie, Jiangjun Zhou, Dongfa Liao, Da Liu   +4 more
doaj   +1 more source

Accuracy of Lateral Mass Screw Insertion during Cervical Spine Surgery without Fluoroscopic Guidance and Comparison of Postoperative Screw Loosening Rate among Unicortical and Bicortical Screws Using Computed Tomography

Spine Surgery and Related Research, 2022
Introduction: Pedicle screws (PSs) or lateral mass screws (LMSs) are used in posterior cervical spine fixation. The former are more firmly fixed but are associated with the risk of neurovascular injury and should be inserted using intraoperative imaging ...
Daisuke Inoue, Hideki Shigematsu, Hiroaki Matsumori, Yurito Ueda, Yasuhito Tanaka   +4 more
doaj   +1 more source

Table3_Deterioration of the fixation segment’s stress distribution and the strength reduction of screw holding position together cause screw loosening in ALSR fixed OLIF patients with poor BMD.DOC

, 2022
The vertebral body’s Hounsfield unit (HU) value can credibly reflect patients’ bone mineral density (BMD). Given that poor bone-screw integration initially triggers screw loosening and regional differences in BMD and strength in the vertebral body exist,
Jing-Chi Li (10019642), Tian-Hang Xie (13522654), Zhe-Tao Song (13522657), Yue-Ming Song (13522660), Jian-Cheng Zeng (13522663), Zhi-Qiang Yang (1811902)   +5 more
core   +1 more source

Table1_Deterioration of the fixation segment’s stress distribution and the strength reduction of screw holding position together cause screw loosening in ALSR fixed OLIF patients with poor BMD.DOC

, 2022
The vertebral body’s Hounsfield unit (HU) value can credibly reflect patients’ bone mineral density (BMD). Given that poor bone-screw integration initially triggers screw loosening and regional differences in BMD and strength in the vertebral body exist,
Jing-Chi Li (10019642), Tian-Hang Xie (13522654), Zhe-Tao Song (13522657), Yue-Ming Song (13522660), Jian-Cheng Zeng (13522663), Zhi-Qiang Yang (1811902)   +5 more
core   +1 more source

Finite element method study: the effect of insertion torque and angle on pedicle screw loosening [PDF]

, 2019
Pedicle screws are widely used for the treatment of spinal instability by spine fusion. This treatment can be performed at any level in the spine (cervical, thoracic or lumbar) and prevents any movement between the fused vertebrae.
Rosdi, Daud, M., Syakir, Mas Ayu, Hassan, Arman Shah, Abdullah   +3 more
core   +1 more source

Preoperative and follow-up variations of psoas major muscle are related to S1 screw loosening in patients with degenerative lumbar spinal stenosis

BMC Musculoskeletal Disorders
Background It was reported the paraspinal muscle played an important role in spinal stability. The preoperative paraspinal muscle was related to S1 screw loosening. But the relationship between preoperative and postoperative change of psoas major muscle (
Siyu Zhou, Fei Xu, Zhuoran Sun, Shuai Jiang, Zhuofu Li, Gengyu Han, Weishi Li   +6 more
doaj   +1 more source

Bilateral dual iliac screws in spinal deformity correction surgery

Journal of Orthopaedic Surgery and Research, 2018
Background Surgery for adult spinal deformity requires optimal patient-specific spino-pelvic-lower extremity alignment. Distal fixation in thoracolumbar spinal deformity surgery is crucial when arthrodesis to the sacrum is indicated.
Shigeto Ebata, Tetsuro Ohba, Hiroki Oba, Hirotaka Haro   +3 more
doaj   +1 more source

Value of computed tomography Hounsfield units in predicting pedicle screw loosening in the thoracic spine

Scientific Reports, 2022
We evaluated the feasibility of using the Hounsfield unit (HU) value of the vertebral body to predict screw loosening in the thoracic spine. Consecutive patients who underwent thoracic spinal fusion surgery (from 2014 to 2020) were retrospectively ...
Minsu Lee, Eugene Lee, Joon Woo Lee
doaj   +1 more source

Table2_Deterioration of the fixation segment’s stress distribution and the strength reduction of screw holding position together cause screw loosening in ALSR fixed OLIF patients with poor BMD.DOC

, 2022
The vertebral body’s Hounsfield unit (HU) value can credibly reflect patients’ bone mineral density (BMD). Given that poor bone-screw integration initially triggers screw loosening and regional differences in BMD and strength in the vertebral body exist,
Jing-Chi Li (10019642), Tian-Hang Xie (13522654), Zhe-Tao Song (13522657), Yue-Ming Song (13522660), Jian-Cheng Zeng (13522663), Zhi-Qiang Yang (1811902)   +5 more
core   +1 more source