Results 11 to 20 of about 130,441 (138)
Orthopaedic Surgery, 2023 Purposes Screw loosening is a common complication of iliosacral screw fixation, with subsequent loss of stability and fracture re‐displacement. This study aimed to investigate the incidence of and risk factors for screw loosening after iliosacral screw ...
Wei Zhou +6 more
doaj +2 more sources
Evaluation of implant abutment screw head deformation in hexagonal and star designs after successive tightening and loosening [PDF]
Journal of Advanced Periodontology and Implant Dentistry, 2023 Background. Tightening and loosening of the prosthetic components of the implant are carried out with various screw designs. This study compared the rate of deformation of the abutment screw in two hexagonal and star screw head designs after consecutive ...
Tahereh Ghaffari +5 more
doaj +3 more sources
Biomechanical effects of screw loosening after lumbar PEEK rod and titanium rod fixation: a finite element analysis [PDF]
Frontiers in Bioengineering and BiotechnologyObjectiveScrew loosening is a common complication following lumbar spine fixation surgery, yet the biomechanical outcomes after screw loosening remain rarely reported.
Guozheng Jiang +7 more
doaj +2 more sources
Hounsfield unit to serum pentosidine ratio predicts screw loosening after lumbar interbody fusion [PDF]
BMC Musculoskeletal DisordersPurpose This study aimed to identify whether the ratio of the vertebral Hounsfield unit to serum pentosidine (H/P ratio), which reflects bone density and quality, can predict screw loosening after spinal fusion surgery.
Daigo Arimura +5 more
doaj +2 more sources
The Prevalence and Risk Factors for S2 Alar-Iliac Screw Loosening with a Minimum 2-Year Follow-up [PDF]
Asian Spine Journal, 2020 Study Design A retrospective cohort study. Purpose The purpose of this study was to investigate the prevalence and risk factors for S2 alar-iliac (SAI) screw loosening following lumbosacral fixation, with a minimum 2-year follow-up.
Hiroaki Nakashima +8 more
doaj +1 more source
Risk Factors for Loosening of S2 Alar Iliac Screw: Surgical Outcomes of Adult Spinal Deformity [PDF]
Asian Spine Journal, 2020 Study Design Retrospective study. Purpose To determine the risk factors for S2 alar iliac (S2AI) screw loosening and its association with lumbosacral fusion in patients with adult spinal deformity (ASD).
Yasushi Iijima +12 more
doaj +1 more source
BMC Musculoskeletal Disorders, 2022 Background When choosing S1 as the lowest level of instrumentation, there are many complications may come out such as S1 screw loosening. Facing this problem, there has been various techniques for the protection of S1 screw including sacropelvic fixation,
Fei Xu +5 more
doaj +1 more source
Journal of Orthopaedic Surgery and Research, 2021 Background Paraspinal muscle is an important component to maintain spinal stability. But the relationship between the degeneration of paraspinal muscle and postoperative screw loosening in patients with adult degenerative scoliosis has not been studied ...
Wei Wang, Weishi Li, Zhongqiang Chen
doaj +1 more source
Frontiers in Bioengineering and Biotechnology, 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 +5 more
doaj +1 more source
Coating Materials to Prevent Screw Loosening in Single Dental Implant Crowns: A Systematic Review. [PDF]
Materials (Basel)Oral rehabilitation with dental implants has resulted in high success rates. However, some complications have been described, such as the loss of the prosthetic screw.
Coelho L +6 more
europepmc +3 more sources