Rapid prototyped patient specific implants for reconstruction of orbital wall defects
Rapid prototyped patient specific implants for reconstruction of orbital wall defects
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DOI：
10.1016/j.jcms.2014.05.006
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发表时间：
2014-12-01
影响因子：
3.1
通讯作者：
Kontio, Risto K.
中科院分区：
文献类型：
--
作者：
Stoor, Patricia;Suomalainen, Anni;Kontio, Risto K.
眶壁缺损可采用植入物重建。作者报告了一种使用患者特定植入物重建眶区骨缺损的安全准确方法。本前瞻性研究详细介绍了计算机辅助设计（Computer Aided Design，CAD）重建手术（Reconstructive Surgery，CRS）的过程，并利用MSCT数据和PTCProEngineer（TM）3D软件设计了三维立体虚拟种植体。12例患者的完整眶腔与损伤侧成镜像。特定的壁架将植入物引导到正确的位置。术后使用图像融合评估位置。1个植入物（8%）因化学杂质而被拒收，2个（16%）因CAD不正确而形状错误。薄骨的数据不能正确地传输到CAD，导致错误，1个种植体（8%）放置错误。CRS的持续时间平均为1.17 h，相应地，使用术中弯曲技术为1.57 h。CRS过程有几个关键阶段，涉及数据转换和软件之间的不兼容性。CRS过程有几个步骤需要进一步研究。薄骨的数据可能丢失，并干扰否则非常精确的技术。必须小心控制植入物中混入杂质的风险。(C)2014年欧洲颅颌面外科协会。由爱思唯尔有限公司出版。保留所有权利。
Defects of orbital walls can be reconstructed using implants. The authors report a safe and accurate method to reconstruct bone defects in the orbital area using patient specific implants. A detailed process description of computer aided design (CAD) reconstructive surgery (CRS) is introduced in this prospective study.The 3D volumetric virtual implant was design using MSCT data and PTCProEngineer (TM) 3D software. The intact orbital cavity of twelve patients was mirrored to the injured side. Specific ledges steered the implant into correct place. Postoperatively the position was assessed using image fusion. One implant (8%) was rejected due to chemical impurities, two (16%) had a false shape due to incorrect CAD. Data of thin bone did not transfer correctly to CAD and resulted in error.One implant (8%) was placed incorrectly. Duration of the CRS was in average 1.17 h, correspondingly 1.57 h using intraoperative bending technique. The CRS process has several critical stages, which are related to converting data and to incompatibility between software.The CRS process has several steps that need further studies. The data of thin bone may be lost and disturb an otherwise very precise technique. The risk of incorporating impurities into the implant must be carefully controlled. (C) 2014 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.