Screw loosening
Pedicle screw loosening: the value of radiological imagings and the identification of risk factors assessed by extraction torque during screw removal surgery
... to screw loosening. Excessive strain between the screw and bone interface is considered to be the primary cause for screw loosening [12, 22], which could be deteriorated when fusion is ...
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Bone Mineral Density Values Derived from Routine Lumbar Spine Multidetector Row CT Predict Osteoporotic Vertebral Fractures and Screw Loosening
... tients without screw loosening (77.3 ⫾ 22.3 versus 110.1 ⫾ 30.7 mg/ mL; P ⬍ .001; adjusted for age, sex, follow-up time, and tube voltage; Fig 4). An area under the ROC curve value of 0.827 (P ⬍ .001) was ...
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Insertion torque is not a good predictor of pedicle screw loosening after spinal instrumentation: a prospective study in 8 patients
... of loosening or instability were noted and correlated to the insertion torque ...of loosening of the screws or insertion torque and signs of ...of screw loosening or clinical results ...of ...
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Effect of different angulations and collar lengths of conical hybrid implant abutment on screw loosening after dynamic cyclic loading
... the screw [30] When off-axis loading is ap- plied to an implant, the magnitude of the stress will be increased three times or more ...increases screw loosening [12, ...
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The influence of implant–abutment connection on the screw loosening and microleakage
... Three kinds of Nobel Biocare implants were employed in the present study, namely, Nobel SpeedyGroovy WP 5.0 × 15 mm (EP), Nobel Replace WP 5.0 × 15 mm (IP), and Nobel Parallel CC RP 5.0 × 15 mm (CC) (n = 7 each) (Nobel ...
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Augmented pedicle trajectory applied on the osteoporotic spine with lumbar degenerative disease: mid-term outcome
... pedicle screw group (PSA) group, the other 28 (3 males, 25 females) in traditional pedicle screw group ...fusion, screw loosening, and cage subsidence ...
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Adjacent segment infection after surgical treatment of spondylodiscitis
... Conclusions Adjacent segment infection after surgical treatment of spondylodiscitis is a rare complication (1.94 %). It is associated with multimorbidity and shows a high mortality rate and a high neurological affection ...
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The effects of bisphosphonates on osteoporotic patients after lumbar fusion: a meta-analysis
... 20. Ohtori S, Inoue G, Orita S, et al. Comparison of teriparatide and bispho- sphonate treatment to reduce pedicle screw loosening after lumbar spinal fusion surgery in postmenopausal women with ...
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Analysis of the stress distribution of the subtalar joint and fusion efficacy after double-screw insertion
... as screw loosening occurred, which is closely associated with the reliable and stable compres- sion of double-screw ...traditional screw fixation approaches, the subtalar joint fixation ...
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Implant Failure - Prosthodontist’s Eye View
... loss, screw loosening, occlusal material fracture, prosthesis fracture, or attachment wear and fracture, and implant fixture fracture, thus implant ...
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Masticatory System Biomechanical Photoelastic Simulation fot the Comparision of the Conventional and Uni-Lock Systems in Mandibular Osteosynthesis
... the screw to the plate while the screw shaft secures the ...less screw loosening; 2) greater stability across the fracture site; 3) less precision required in plate adaptation because of the ...
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Performance evaluation of screw-press oil expeller using a continuous spiral and decreasing length of pitch of screw
... Oil expression from oilseed is primarily expelled in mechanical press. The conventional theory of mechanical oil expression incorporate the rupturing of oilseed cells through thermal pre-treatment, crushing and pressing ...
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Evaluation of Screw Reinforcement on Bearing Performance of Wood Depending on Screw Position
... Although experimental results showed big variation, the tendency of the change on the initial stiffness and yield strength of the experimental result in accordance with the position of the screw thread was well ...
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26Postoperative diagnosis and outcome in patients with revision arthroplasty for aseptic loosening
... The pathogenesis of aseptic loosening (AL) in pros- thetic joints is not well understood, and several lines of evidence suggest that occult bacteria may cause some AL cases. First using a sonication method to ...
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Effect of Nature and Amount of Polypropylene Composite Filler on the Productivity of Extruder with the Cylinder Equipped with Grooves
... the screw with L/D = 20 the in- crease in talc content (the same as for chalk) in- creases the melt effective viscosity and productiv- ...the screw with L/D = 30 the increase in productivity is observed ...
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Feasibility of Translaminar Screw Placement in Korean Population: Morphometric Analysis of Cervical Spine
... translaminar screw placement in Koran population, and compare the acceptance rate using previously reported data in American ...cal screw placement on the CT scans within ...translaminar screw ...
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Asl-us-Sus ( Glycyrrhiza glabra L.) –A Potent Unani Drug
... expectorant loosening and helping to expel congestion in the upper respiratory tract as it accelerates tracheal mucus secretion 20 ...expectorant loosening and helping to expel congestion in the upper ...
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Immune response and innervation signatures in aseptic hip implant loosening
... In AL patients, TH+ catecholamine-producing cells were not detected in the synovial membrane-like interface, suggesting total uncoupling of local joint inflammation from the sympathetic [r] ...
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Asl-us-Sus (Glycyrrhiza glabra L.) A Potent Unani Drug
... expectorant loosening and helping to expel congestion in the upper respiratory tract as it accelerates tracheal mucus secretion 20 ...expectorant loosening and helping to expel congestion in the upper ...
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Employment characteristics of tine cultivators at deeper soil loosening
... Working depthsStubble and unit drafts of the cultivators tested 8 Measurement depth m Köckerling Vario 570 7 Simba Solo 450 Horsch Terrano 5 FX 6 Strom Finisher mega 8000 5 Farmet Turbu[r] ...
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