This paper presents an experimental study on the pullout resistance of a newly improved reinforcement. The applied reinforcement was smooth steel strip with transverse members used to improve pullout-resistance problems and bearing were evaluated using results large-scale tests. evaluation result confirmed that about 33–66% total resistance, it had evenly distributed friction resistance. bond c...

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BACKGROUND AND PURPOSE Due to the known drawbacks of metal implants, new biomaterials for internal fracture fixation are attracting increasing interest, among them poly(lactic-co-glucolic) acids (PLGAs) and the recently developed silk-tenoin derived materials (STDMs). In accordance with the new philosophy of bio-derived biomaterials (BIODERIBIOs), I describe a novel innovative technology for us...

Rod reduction to pedicle screws is used for a variety of spinal fixation procedures; however, it can alter the integrity of the screw-bone interface. The authors investigated the effect of pedicle fill (ratio of pedicle screw diameter to pedicle diameter) on the strength of the screw-bone interface after simulated rod reduction on 17 vertebrae (3 thoracolumbar spine specimens). Pedicle diameter...

STUDY DESIGN A biomechanical spine model was used to evaluate the impact of screw design on screw-vertebra interface loading during simulated surgical corrections of adult scoliosis. OBJECTIVES To evaluate differences in screw-vertebra interface forces during adult scoliosis correction between favored angle (FA) screws with extension tabs and standard polyaxial screws while varying deformity ...

BACKGROUND AND PURPOSE The most frequently used bones for mechanical testing of orthopedic and trauma devices are fresh frozen cadaveric bones, embalmed cadaveric bones, and artificial composite bones. Even today, the comparability of these different bone types has not been established. METHODS We tested fresh frozen and embalmed cadaveric femora that were similar concerning age, sex, bone mi...

PURPOSE Suture anchors are used consistently for repairs of soft tissues, especially around the glenohumeral joint. These anchors can be used either arthroscopically or in an open procedure to anatomically restore the labrum and capsular tissues to the glenoid after avulsion injuries (Bankart lesion). The purpose of this study was to analyze the pullout strength of a new knotless suture anchor ...

Abstract Natural fibre–reinforced composites are more sustainable than other with respect to the raw materials. Their properties attractive due high specific properties, and especially so wherever damping is valued. As interphase between fibre matrix region of highest stresses, a strong bond essential for any composites’ properties. The present study compares two methods determining interfacial...