颈椎前路融合多孔钽融合笼架的研究进展

Research progress of porous tantalum fusion cage for anterior cervical fusion

钽金属越来越多地应用于生活中,由于具有极佳的生物惰性和生物相容性,也被称为“亲生物”金属。纯钽在骨科中的应用已经80余年,但纯钽与骨组织弹性模量相差较大,不利于骨愈合。多孔钽是一种开孔金属结构,外观近似于人松质骨。它具有低弹性模量,接近于软骨下骨和松质骨,能够获得更好的负荷转移和最小化应力屏蔽现象。它的摩擦系数是生物材料中最高的之一,甚至在没有螺钉固定情况下,可以充分地获得融合器的初步稳定性。本文针对多孔钽融合笼架在颈椎前路的应用进行综述,为临床医生更好地选择合适的融合器提供参考。

Tantalum metal is increasingly used in daily life, and it is also known as "biophilic" metal due to its excellent biological inertness and biocompatibility. Pure tantalum has been used in orthopaedics for over 80 years. Because the elastic modulus of pure tantalum differs greatly from that of bone tissue, it is not conducive to bone healing. Porous tantalum is an metal structure that resembles human cancellous bone in appearance, with low elastic modulus close to that of subchondral and cancellous bone, which enables better load transfer and minimizes stress shielding phenomena. With highest coefficient of friction among biomaterials, the porous tantalum cage had sufficiently initial stability even without screw fixation. This article reviews the application of porous tantalum fusion cage in the anterior cervical spine, and provides a reference for clinicians to better choose the appropriate cage.