www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Innovation

3D printer gives man a new spine

By Liu Zhihua | chinadaily.com.cn | Updated: 2016-07-08 09:56

3D printer gives man a new spine

The operation is under way. [Photo/Provided to chinadaily.com.cn]

In the first operation in mid May, back sections of Yuan's cancer-riddled vertebrae were removed, and the surgeons attached four titanium rods to what was left of the back part of the spine using titanium screws. These rods were screwed in at the other end, on the front of the spine, still bearing cancerous vertebrae, to make everything stable.

It was deemed too dangerous to remove sections of vertebrae on both sides in the one operation.

In the second operation the front parts of the vertebrae were finally removed and the 3D-printed implant was then put in place.

There had been no reports about the removal of such a large section of spine in one patient anywhere in the world, and the medical team needed to be highly skilled and experienced to deal with any emergency during the two operations, Liu said.

The void left in the spine after the front part of the five vertebrae was removed would have been too large for any existing titanium mesh cage, which is traditionally used in such surgeries. Even if it had existed it would have been straight and ill-suited to Yuan's spine.

Also, with normal titanium mesh cage, doctors usually put crushed bone in the mesh, so that when that bone fuses with the neighboring bones the implant becomes stronger and firm enough to support the spine.

In Yuan's case this method was judged to be too risky because of the size of the implant needed. Any movement of the implant would damage the spinal cord and nerve roots in the spinal channel.

Yuan's implant was customized to cope with the curvature of his spine, and doctors designed special joints to attach it firmly to the titanium rods, which made the two parts of the implant a strong whole that is firm and is very supportive of the spine.

Editor's picks
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
主站蜘蛛池模板: 男人的天堂高清在线观看 | 国产一级特黄aaa大片 | 日韩特黄特色大片免费视频 | 成人123| 欧美精品videosbestsex另类 | 中文字幕一区二区在线视频 | 三级网站在线免费观看 | 亚洲图片国产日韩欧美 | 在线播放一区二区精品产 | 成人免费aaaaa毛片 | 草草在线观看视频 | 精品国产精品久久一区免费式 | 亚洲欧美一区二区久久香蕉 | 久久久久国产精品 | 日本草草视频在线观看 | 国产成人精品视频频 | 国产一区二区三区免费视频 | 国产精品视频第一区二区三区 | 日本三级2021最新理论在线观看 | 99精品视频免费在线观看 | 国产免费爱在线观看视频 | 成人老司机深夜福利久久 | 国产国语在线播放视频 | 国产欧美二区三区 | 亚洲精品一区二区久久这里 | 丁香婷婷影音先锋5566 | 精品三级在线观看 | 日本精品高清一区二区不卡 | 免费日韩一级片 | 欧美大片毛片aaa免费看 | 日韩欧美一区二区三区在线观看 | 国产三级网 | 成人性色生活影片 | 亚洲欧美激情精品一区二区 | 欧美一级成人毛片影院 | 精品久久久久久久 | 亚洲天堂一区二区在线观看 | 国产成人福利免费观看 | 久久香蕉国产精品一区二区三 | 精品一区二区三区免费毛片爱 | 综合自拍亚洲综合图区美腿丝袜 |