采用一种创新型髓内钉治疗股骨骨折。
Healing of femoral fractures by the meaning of an innovative intramedullary nail.
作者信息
Filardi V
机构信息
CARECI, University of Messina, Via consolato del mare 41, 98121, Messina, Italy.
出版信息
J Orthop. 2018 Jan 17;15(1):73-77. doi: 10.1016/j.jor.2018.01.011. eCollection 2018 Mar.
Abstract
In this paper, an innovative design of nail, conceived to heal fractures of long bones has been investigated. Its functioning is based essentially on sliding of conical surfaces located in a spindle and in a series of holding pins radially disposed around it. Spindle and holding pins are connected together by means of a sleeve. Medial and distal screws are not necessary. Rotational and longitudinal motions of the spindle are transformed in a radial expansion of the holding pins by the sliding of conical surfaces. A complete numerical FE model of an implanted femur was realized and analyzed by the mean of two loading configurations: LC1 by imposing a vertical load of 980 N, and LC2 by considering resultants of the muscle actions. Analyses confirmed results, in terms of mechanical performances, comparable with the others traditional systems of prosthesis.
摘要
在本文中，对一种为治疗长骨骨折而构思的创新型钉子设计进行了研究。其功能主要基于位于心轴以及围绕心轴径向布置的一系列固定销中的圆锥面的滑动。心轴和固定销通过一个套筒连接在一起。无需内侧和外侧螺钉。通过圆锥面的滑动，心轴的旋转和纵向运动转化为固定销的径向扩张。通过两种加载配置实现并分析了植入股骨的完整有限元数值模型：LC1通过施加980 N的垂直载荷，LC2通过考虑肌肉作用力的合力。分析证实，在力学性能方面，其结果与其他传统假体系统相当。
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