Additive manufactured push-fit implant fixation with screw-strength pull out
نویسندگان
چکیده
منابع مشابه
Triangulated pedicle screw construct technique and pull-out strength of conical and cylindrical screws.
To compare the mechanical effectiveness of a new conical screw design with a conventional cylindrical screw design, the screw insertion time, torque, and pull-out strength of single-pedicle screw and triangulated-pedicle screw constructs of each type of screw were compared in human cadaveric vertebral bodies. The time required to insert the conical screws was less than that required for cylindr...
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BACKGROUND Lateral pedicle wall perforations occur frequently during pedicle screw insertion. Although it is known that such an occurrence decreases the screw pull-out strength, the effect has not been quantified biomechanically. MATERIALS AND METHODS Twenty fresh cadaveric lumbar vertebrae were harvested, and the bone mineral density (BMD) of each was evaluated with dual-energy radiography a...
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ژورنال
عنوان ژورنال: Journal of Orthopaedic Research®
سال: 2017
ISSN: 0736-0266
DOI: 10.1002/jor.23771