Development of mechanical equivalent porous structures for 3D-printed artificial femoral heads
文献类型：期刊论文
| 作者 | Liu MY(刘谟语)3,4 ; Wang J(王君)3,4; Li Y(李钰)3,4; Cheng, Kaiyuan2; Xun Y(郇勇)1,3,4; Li, Ning2; Huan Y(郇勇); Li Y(李钰); Liu MY(刘谟语)
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| 刊名 | ACTA MECHANICA SINICA
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| 出版日期 | 2025-04-01 |
| 卷号 | 41期号:4页码:12 |
| 关键词 | Mechanical equivalence Porous structure Anisotropy Femoral head Artificial bone |
| ISSN号 | 0567-7718 |
| DOI | 10.1007/s10409-024-24089-x |
| 通讯作者 | Huan, Yong(huany@lnm.imech.ac.cn) ; Li, Ning(lining_jst@126.com) |
| 英文摘要 | The current artificial bone is unable to accurately replicate the inhomogeneity and anisotropy of human cancellous bone. To address this issue, we proposed a personalized approach based on clinical CT images to design mechanical equivalent porous structures for artificial femoral heads. Firstly, supported by Micro and clinical CT scans of 21 bone specimens, the anisotropic mechanical parameters of human cancellous bone in the femoral head were characterized using clinical CT values (Hounsfield unit). After that, the equivalent porous structure of cancellous bone was designed based on the gyroid surface, the influence of its degree of anisotropy and volume fraction on the macroscopic mechanical parameters was investigated by finite element analysis. Furthermore, a mapping relationship between CT values and the porous structure was established by jointly solving the mechanical parameters of the porous structure and human cancellous bone, allowing the design of personalized gradient porous structures based on clinical CT images. Finally, to verify the mechanical equivalence, implant press-in tests were conducted on 3D-printed artificial femoral heads and human femoral heads, the influence of the porous structure's cell size in bone-implant interaction problems was also explored. Results showed that the minimum deviations of press-in stiffness (<15%) and peak load (<5%) both occurred when the cell size was 20% to 30% of the implant diameter. In conclusion, the designed porous structure can replicate the human cancellous bone-implant interaction at a high level, indicating its effectiveness in optimizing the mechanical performance of 3D-printed artificial femoral head. |
| 分类号 | 二类/Q1 |
| WOS关键词 | BONE-MINERAL DENSITY ; TRABECULAR BONE ; PROXIMAL FEMUR ; ELASTIC-CONSTANTS ; DEPENDENCE ; FRACTURE ; MODEL ; POROSITY ; CHINESE ; LAW |
| 资助项目 | National Key R&D Program of China[2021YFC2501700] |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001325062800002 |
| 资助机构 | National Key R&D Program of China |
| 其他责任者 | Huan, Yong ; Li, Ning |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96895]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing Key Lab Engn Construct & Mechanobiol, Beijing 100190, Peoples R China 2.Capital Med Univ, Beijing Jishuitan Hosp, Dept Orthopaed & Traumatol, Beijing 100035, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu MY,Wang J,Li Y,et al. Development of mechanical equivalent porous structures for 3D-printed artificial femoral heads[J]. ACTA MECHANICA SINICA,2025,41(4):12. |
| APA | 刘谟语.,王君.,李钰.,Cheng, Kaiyuan.,郇勇.,...&Liu MY.(2025).Development of mechanical equivalent porous structures for 3D-printed artificial femoral heads.ACTA MECHANICA SINICA,41(4),12. |
| MLA | 刘谟语,et al."Development of mechanical equivalent porous structures for 3D-printed artificial femoral heads".ACTA MECHANICA SINICA 41.4(2025):12. |
入库方式： OAI收割
来源：力学研究所
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