層狀仿生生物活性人工軟骨植入體的數字散斑相關分析

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Full-field deformation measurement of bionic artificial cartilage/bone composites using digital speckle correlation method

1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;
3. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China

摘要: 制備了一種仿生層狀人工軟骨/骨復合植入體,可將軟骨植入體與宿主軟骨的連接轉變為骨-骨的界面結合,提高植入軟骨固定效果.采用數字散斑等方法對仿生層狀人工關節軟骨/骨復合植入體的生物力學性能進行研究,比較了松質骨,PVA/骨復合體以及PVA-BG復合體在不同載荷作用下的位移變化,并從微觀變形角度探討了人工軟骨/骨復合植入體中軟骨層厚度對緩沖內部應力的作用.
- 人工軟骨 /
- 力學性能 /
- 計算機輔助 /
- 信號處理
Abstract: The bionic bioactive artificial cartilage/bone composites implants were prepared by casting bioactive hydrogels onto the cancellous bone according to the structures of nature cartilage.This new kind of cartilage implants could improve the inferior connection of the implants with host cartilage by means of bone-bone interfacial interaction.The digital speckle correlation method was used to investigate the bio-mechanical properties of the artificial cartilage/bone composites.The micro-deformation of the cancellous bone,PVA/bonecomposites and PVA-BG/composite under different compressed loads were compared,which could show the cushion action of the artificial cartilage in the range of microscale.
- artificial cartilage /
- mechanical property /
- computer assisted /
- signal processing