Pullout of a lumbar plate with varying screw lengths
نویسندگان
چکیده
منابع مشابه
Pullout of a lumbar plate with varying screw lengths
BACKGROUND Screw length pertains to stability in various orthopedic fixation devices. There is little or no information on the relationship between plate pullout strength and screw length in anterior lumbar interbody fusion (ALIF) plate constructs in the literature. Such a description may prove useful, especially in the treatment of osteoporotic patients where maximizing construct stability is ...
متن کاملA comparison of screw insertion torque and pullout strength.
PURPOSE Pullout strength of screws is a parameter used to evaluate plate screw fixation strength. However, screw fixation strength may be more closely related to its ability to generate sufficient insertion because stable nonlocked plate-screw fracture fixation requires sufficient compression between plate and bone such that no motion occurs between the plate and bone under physiological loads....
متن کاملEvaluation of cyanoacrylate augmentation of transpedicular screw pullout strength.
PURPOSE Pedicle screw fixation of osteoporotic bone in the elderly is a challenge. Various augmentation methods have been studied by many authors. Although polymethylmethacrylate (PMMA) augmentation is believed to be a standard method, its usage is fraught with complications. Butyl-2-cyanoacrylate is an alternative to PMMA as it is bioresorbable, biocompatible, inexpensive, and noninfective. Th...
متن کاملAxial pullout strength comparison of different screw designs: fenestrated screw, dual outer diameter screw and standard pedicle screw
BACKGROUND The pullout strength of pedicle screws is influenced by many factors, including diameter of the screws, implant design, and augmentation with bone cement such as PMMA. In the present study, the pullout strength of an innovative fenestrated screw augmented with PMMA was investigated and was compared to unaugmented fenestrated, standard and dual outer diameter screw. METHODS Twenty f...
متن کاملClinical Use of 3D Printing Guide Plate in Posterior Lumbar Pedicle Screw Fixation.
BACKGROUND This study aimed to evaluate the clinical efficacy of use of a 3D printing guide plate in posterior lumbar pedicle screw fixation. MATERIAL AND METHODS We enrolled 43 patients receiving posterior lumbar pedicle screw fixation. The experimental group underwent 3D printing guide plate-assisted posterior lumbar pedicle screw fixation, while the control group underwent traditional x-ray-...
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ژورنال
عنوان ژورنال: The International Journal of Spine Surgery
سال: 2012
ISSN: 2211-4599
DOI: 10.1016/j.ijsp.2011.12.002