Femoral Stems With Porous Lattice Structures: A Review

Cementless femoral stems are prone to stress shielding of the femoral bone, which is caused by a mismatch in stiffness between the femoral stem and femur. This can cause bone resorption and resultant loosening of the implant. It is possible to reduce the stress shielding by using a femoral stem with...

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Autores principales:	Bolun Liu, Huizhi Wang, Ningze Zhang, Min Zhang, Cheng-Kung Cheng
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	femoral stem porous structure stress shielding bone ingrowth additive manufacturing total hip arthroplasty Biotechnology TP248.13-248.65
Acceso en línea:	https://doaj.org/article/2137e7789ba142058833fa6de4385813
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spelling	oai:doaj.org-article:2137e7789ba142058833fa6de43858132021-11-17T06:27:30ZFemoral Stems With Porous Lattice Structures: A Review2296-418510.3389/fbioe.2021.772539https://doaj.org/article/2137e7789ba142058833fa6de43858132021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fbioe.2021.772539/fullhttps://doaj.org/toc/2296-4185Cementless femoral stems are prone to stress shielding of the femoral bone, which is caused by a mismatch in stiffness between the femoral stem and femur. This can cause bone resorption and resultant loosening of the implant. It is possible to reduce the stress shielding by using a femoral stem with porous structures and lower stiffness. A porous structure also provides a secondary function of allowing bone ingrowth, thus improving the long-term stability of the prosthesis. Furthermore, due to the advent of additive manufacturing (AM) technology, it is possible to fabricate femoral stems with internal porous lattices. Several review articles have discussed porous structures, mainly focusing on the geometric design, mechanical properties and influence on bone ingrowth. However, the safety and effectiveness of porous femoral stems depend not only on the characteristic of porous structure but also on the macro design of the femoral stem; for example, the distribution of the porous structure, the stem geometric shape, the material, and the manufacturing process. This review focuses on porous femoral stems, including the porous structure, macro geometric design of the stem, performance evaluation, research methods used for designing and evaluating the femoral stems, materials and manufacturing techniques. In addition, this review will evaluate whether porous femoral stems can reduce stress shielding and increase bone ingrowth, in addition to analyzing their shortcomings and related risks and providing ideas for potential design improvements.Bolun LiuHuizhi WangNingze ZhangMin ZhangCheng-Kung ChengCheng-Kung ChengFrontiers Media S.A.articlefemoral stemporous structurestress shieldingbone ingrowthadditive manufacturingtotal hip arthroplastyBiotechnologyTP248.13-248.65ENFrontiers in Bioengineering and Biotechnology, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	femoral stem porous structure stress shielding bone ingrowth additive manufacturing total hip arthroplasty Biotechnology TP248.13-248.65
spellingShingle	femoral stem porous structure stress shielding bone ingrowth additive manufacturing total hip arthroplasty Biotechnology TP248.13-248.65 Bolun Liu Huizhi Wang Ningze Zhang Min Zhang Cheng-Kung Cheng Cheng-Kung Cheng Femoral Stems With Porous Lattice Structures: A Review
description	Cementless femoral stems are prone to stress shielding of the femoral bone, which is caused by a mismatch in stiffness between the femoral stem and femur. This can cause bone resorption and resultant loosening of the implant. It is possible to reduce the stress shielding by using a femoral stem with porous structures and lower stiffness. A porous structure also provides a secondary function of allowing bone ingrowth, thus improving the long-term stability of the prosthesis. Furthermore, due to the advent of additive manufacturing (AM) technology, it is possible to fabricate femoral stems with internal porous lattices. Several review articles have discussed porous structures, mainly focusing on the geometric design, mechanical properties and influence on bone ingrowth. However, the safety and effectiveness of porous femoral stems depend not only on the characteristic of porous structure but also on the macro design of the femoral stem; for example, the distribution of the porous structure, the stem geometric shape, the material, and the manufacturing process. This review focuses on porous femoral stems, including the porous structure, macro geometric design of the stem, performance evaluation, research methods used for designing and evaluating the femoral stems, materials and manufacturing techniques. In addition, this review will evaluate whether porous femoral stems can reduce stress shielding and increase bone ingrowth, in addition to analyzing their shortcomings and related risks and providing ideas for potential design improvements.
format	article
author	Bolun Liu Huizhi Wang Ningze Zhang Min Zhang Cheng-Kung Cheng Cheng-Kung Cheng
author_facet	Bolun Liu Huizhi Wang Ningze Zhang Min Zhang Cheng-Kung Cheng Cheng-Kung Cheng
author_sort	Bolun Liu
title	Femoral Stems With Porous Lattice Structures: A Review
title_short	Femoral Stems With Porous Lattice Structures: A Review
title_full	Femoral Stems With Porous Lattice Structures: A Review
title_fullStr	Femoral Stems With Porous Lattice Structures: A Review
title_full_unstemmed	Femoral Stems With Porous Lattice Structures: A Review
title_sort	femoral stems with porous lattice structures: a review
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/2137e7789ba142058833fa6de4385813
work_keys_str_mv	AT bolunliu femoralstemswithporouslatticestructuresareview AT huizhiwang femoralstemswithporouslatticestructuresareview AT ningzezhang femoralstemswithporouslatticestructuresareview AT minzhang femoralstemswithporouslatticestructuresareview AT chengkungcheng femoralstemswithporouslatticestructuresareview AT chengkungcheng femoralstemswithporouslatticestructuresareview
_version_	1718425848645681152

Femoral Stems With Porous Lattice Structures: A Review

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