Percutaneous Plate Fixation of Surgical Neck Fractures of the Proximal Humerus: a Biomechanical Study of a New Device

  • Chudik, Weinhold, Dahners
  • Published 2001

Abstract

Introduction For displaced fractures of the proximal humerus, the words “unsolved fracture” come to mind. There have been many studies that have shown surgical intervention of displaced proximal humerus fractures to provide superior range of motion and function with little surgical risk or morbidity . As evidenced by the numerous methods of surgical fixation described in the literature, it is clear that an optimal method of fixation is yet to be discovered. Shortcomings of existing methods include: loss of fixation, varus malunion, acromial impingement, nonunion, increased rates of osteonecrosis, biceps entrapment, inability to adequately fix tuberosity fragments, infection, and residual shoulder dysfunction. We set out to design a new implant that would avoid some of these shortcomings and hopefully, provide superior outcome. The result was a percutaneously applied, low profile, fixed-angle, dynamic plate with means to secure the tuberosity fragments with a tension band suture through the rotator cuff (See Figures 1 and 2). To evaluate the function of this new plate, we conducted mechanical testing with a previously established cadaveric biomechanical model and standard. Through a biomechanical comparison of ten different fixation methods for surgical neck fractures of the proximal humerus, the AO/ASIF 5hole T-plate (Synthes U.S.A, Paoli, PA) was established as a standard for comparison. We hypothesized that this new percutaneous plate would be biomechanically equivalent to this standard.

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Cite this paper

@inproceedings{Chudik2001PercutaneousPF, title={Percutaneous Plate Fixation of Surgical Neck Fractures of the Proximal Humerus: a Biomechanical Study of a New Device}, author={Chudik and Weinhold and Dahners}, year={2001} }