CAJ | 학술논문

目的利用CT数据三维重建结合逆向工程软件设计胫骨远端后侧解剖钢板. 方法利用MimicslO.Ol软件对30例正常踝部CT扫描数据进行三维重建,测定预置钢板部位的后内侧后翻角度、扭转高度、置钉安全区高度等解剖学指标.并采用Unigraphics NX5.0软件进行胫骨远端后侧解剖钢板的个性化设计,虚拟骨折复位、钢板内固定并观察效果.应用快速成形技术制作胫骨远端后侧解剖钢板模板,应用于4例三踝骨折患者的术前骨折虚拟复位,并于术中对钢板模型进行验证. 结果通过测量显示胫骨远端后内侧后翻角度由外向内逐渐增大,而扭转高度由外向内逐渐降低.根据测量数据,完成钢板的个体化设计,并定制出大、中、小3个型号的钢板模板.将数字化快速成型钢板模板放置于4例患者手术部位,与胫骨远端后侧的匹配度合适,钢板安放位置与角度理想,符合设计要求. 结论应用CT数据、逆向工程软件技术可以进行胫骨远端后侧解剖钢板的个体化设计,为数字骨科学内固定器械设计提供了一定参考.
목적 이용CT수거삼유중건결합역향공정연건설계경골원단후측해부강판. 방법 이용MimicslO.Ol연건대30례정상과부CT소묘수거진행삼유중건,측정예치강판부위적후내측후번각도、뉴전고도、치정안전구고도등해부학지표.병채용Unigraphics NX5.0연건진행경골원단후측해부강판적개성화설계,허의골절복위、강판내고정병관찰효과.응용쾌속성형기술제작경골원단후측해부강판모판,응용우4례삼과골절환자적술전골절허의복위,병우술중대강판모형진행험증. 결과 통과측량현시경골원단후내측후번각도유외향내축점증대,이뉴전고도유외향내축점강저.근거측량수거,완성강판적개체화설계,병정제출대、중、소3개형호적강판모판.장수자화쾌속성형강판모판방치우4례환자수술부위,여경골원단후측적필배도합괄,강판안방위치여각도이상,부합설계요구. 결론 응용CT수거、역향공정연건기술가이진행경골원단후측해부강판적개체화설계,위수자골과학내고정기계설계제공료일정삼고.
Objective To report a digital design of posterior anatomic plate for the distal tibia by software Mimics and UG.Methods The CT data of 30 normal ankles were imported into software Mimics in.dicom format for three-dimensional (3D) reconstruction of the ankle joint.The posteromedial version angle of the distal tibia,the twist height in the sagittal plane and the height of security zone for screw insertion in the distal tibia cross-section were measured.The posterior anatomic plate for the distal tibia was designed on the basis of 3D reconstruction of the ankle joint using the software UG.Simulation of the virtual plating for the virtual fracture reduction was conducted to evaluate the digital plate.The rapid prototyping technique was used to manufacture models of the digital plate which were tested and evaluated in the preoperative virtual fracture reduction and actual surgery in 4 patients.Results The measuremeuts showed that the posteromedial version angle of the distal tibia increased gradually from the lateral to the medial while the twist height decreased from the lateral to the medial.The digital design of the plate was achieved on the basis of the measurement data.The models of the digital plate fit the distal tibia very well in the 4 patients with posterior ankle fracture in clinic.Conclusions Design of digital plate can be carried out using CT data,software Mimics and UG.This study provides a reference for digital design of orthopedic implants.