摘要
目的传统方法制造的人工半膝关节存在个体匹配性、排异性及纯机械固定易松动等问题,为此设计基于快速原型(RP)的定制型人工半膝关节复合系统的制造方法。方法首先利用快速原型技术快速准确地制作出与人体半膝关节形状相匹配的人工植入体原型,然后分别运用钛合金离心铸造和生物材料烧结成型技术制作出人工金属半膝关节和胫骨近端活性人工骨。结果和结论利用快速原型技术制作出了人工半膝关节和胫骨近端活性人工骨。与传统植入体相比,该系统可实现人工半膝关节和对侧半膝关节面的匹配运动,而且功能孔和髓内钉的设计实现了植入体的生物固定和机械固定相结合,大段生物活性人工骨的复合促进了成骨生长,将排异反应减至最低。
ObjectiveDue to the problem of individual matching, exclusivity and loose with pure mechanical fixation for artificial hemi-knee joints made by traditional method, a new manufacturing process based on rapid prototyping technique and custom-made concept is presented.MethodsRapid prototyping was processed to rapidly and accurately shape the prototype of an artificial implant almost with the same shape as the hemi-knee joint of the patient, and the process based on Titanium alloy centrifugal casting technology and biomaterial sintering molding technology was used to fabricate the artificial hemi-knee joint and bioactive proximal tibia artificial bone, respectively.Results and ConclusionThe custom-made knee joint prosthesis has been fabricated and put into clinical use successfully. In comparison with the traditional implants, this system can realize the well matching movement between the artificial hemi-knee joint and its opposite. Meanwhile, the design of functional holes and tibial nails realizes the combination of biological fixation with mechanical fixation for the artificial implant, and the use of bioactive artificial bone promotes bone growth and minimizes the exclusive reaction. [
出处
《中国康复理论与实践》
CSCD
2005年第3期170-172,共3页
Chinese Journal of Rehabilitation Theory and Practice
基金
国家自然科学基金资助项目(No.50235020)
高等学校优秀青年教师教学和科研奖励基金资助项目。
关键词
快速原型
定制化
人工半膝关节
胫骨近端活性人工骨
离心铸造
烧结成型
rapid prototyping
custom-made
artificial hemi-knee joint
bioactive proximal tibia artificial bone
centrifugal casting
sintering molding
