Global EditionASIA 中文雙語Fran?ais
    China
    Home / China / Innovation

    Bionic bones strengthen future of orthopedic implants

    China Daily | Updated: 2019-06-26 10:06
    Share
    Share - WeChat

    Chinese researchers are designing bionic bones with improved biological compatibility and mechanical strength, which will bring new possibilities for future orthopedic implants.

    Researchers from Northwestern Polytechnical University have spent more than 15 years developing artificial bones that are highly consistent with the composition, structure and mechanical properties of natural bones.

    Bone defects are one of the most common conditions in orthopedics, and scientists have been exploring new methods to fabricate bone scaffolds to repair the defects.

    Wang Yan'en from the university, which is based in Xi'an, Shaanxi province, said most bone implants are made of polymer and metals such as titanium. However, they lack biocompatibility and do not match human bones' mechanical strength, which can lead to abrasion and dislocation after they are implanted.

    "If the implants cannot be well fused with natural bones, they may need secondary surgery," Wang said.

    Wang's team used hydroxyapatite, a medical bioceramic material, to fabricate bone scaffolds. Wang said that though it is considered one of the most suitable materials for bone scaffold fabrication, bonding the powderlike material into a strong and robust scaffold remains difficult.

    "Acidic binders used previously made the bone scaffold acidic, which adversely affected the environment for the growth of bone cells and brought agony to the patient after implantation," Wang said.

    The team experimented with hundreds of different solutions to create a binder that would not only result in a strong and robust scaffold but also adapt to the biological environment. The research was published in the journal Polymer.

    After researching the material, Wang's team also explored how to use 3D printing technology to make customized bone scaffolds. They cooperated with companies in developing 3D bionic bone printing machines.

    Natural bones have complex internal structures, which require the printing system to boast special mechanical technology.

    "With ultrafine droplet-spraying technology, the printing equipment can precisely regulate the proportion of printing materials, including the powder, the binder, the cell culture liquid and protein original fluid," Wang said.

    The research team cooperated with the Air Force Medical University, which is also in the city of Xi'an, to conduct animal tests. After 3D-printed bionic bones were implanted in rabbits, they developed well in their bodies, with the bionic bones well-integrated with the natural bones.

    Wang's team is also working on the 3D printing of skin, including sweat glands and hair follicles. "These technologies, with the potential for clinical application, may bring hope to patients with bone defects and skin damage," Wang said.

    Xinhua

    Top
    BACK TO THE TOP
    English
    Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
    License for publishing multimedia online 0108263

    Registration Number: 130349
    FOLLOW US
     
    久久久久久久久久久久中文字幕| 毛片无码免费无码播放| 国产精品ⅴ无码大片在线看| 无码人妻精品一区二区三区99不卡 | 精品人妻无码区二区三区| 国产精品三级在线观看无码| 久久亚洲AV无码精品色午夜麻豆 | 人妻少妇看A偷人无码精品视频| 无码人妻精品一区二区蜜桃网站| 亚欧无码精品无码有性视频| 精品亚洲AV无码一区二区三区| 在线天堂中文在线资源网| 亚洲国产精品无码久久青草 | 一本加勒比HEZYO无码人妻| 久久中文骚妇内射| 影院无码人妻精品一区二区| 日韩精品人妻系列无码专区| 亚洲色偷拍另类无码专区| 在线中文字幕一区| 亚洲AV中文无码乱人伦在线观看| 无码丰满熟妇一区二区| 丰满熟妇乱又伦在线无码视频| 玖玖资源站无码专区| 亚洲AV无码第一区二区三区| 东京热人妻无码一区二区av| 亚洲AV无码一区二区三区牛牛| 无码毛片一区二区三区中文字幕| 中文网丁香综合网| 在线日韩中文字幕| 中文成人无码精品久久久不卡 | 精品久久人妻av中文字幕| 中文字幕亚洲欧美日韩在线不卡| 国产亚洲情侣一区二区无码AV| 极品粉嫩嫩模大尺度无码视频 | 国产高清无码二区 | 久久亚洲精品无码AV红樱桃| 亚洲国产精品无码av| 亚洲欧洲日产国码无码网站| 无码中文字幕av免费放dvd| 久久人妻少妇嫩草AV无码专区| 无码国产精品一区二区免费16|