Biomechanical evaluation of a second generation headless compression screw for ankle arthrodesis in a cadaver model
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- 作者：Andrew Max Somberg ; MDa ; William K. Whiteside ; MDa ; will.whiteside@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; Erik Nilssen ; MDa ; Daniel Murawski ; MDa ; Wei Liu ; PhDb
- 关键词：Arthritis ; Biomechanics ; Ankle arthrodesis ; Cadaver model ; Cannulated screws ; Headless compression screws
- 刊名：Foot and Ankle Surgery
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：22
- 期：1
- 页码：50-54
- 全文大小：879 K
文摘
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We biomechanically compared two cadaveric ankle arthrodesis models using either three traditional cancellous screws or three headless compression screws.
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The specimens were subjected to cyclic loading and unloading for a total of 500 cycles using the Instron.
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The amount of maximum distraction was recorded as well as the amount of motion that occurred through 1, 10, 50, 100, and 500 cycles.
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No significant difference was seen in the amount of distraction that occurred across the fusion site for either screw after 500 cycles.
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There is no demonstrable difference between traditional cannulated partially threaded screws and headless compression screws in terms of motion in this ankle cadaveric model.