In vitro study of axial pullout of pedicle screws
作者单位：Fastening and Joining Research InstituteDept.of Mech.EngineeringOakland University Department of Orthopaedics & Bone and Joint Research CenterShanghai 9th People's HospitalSchool of MedicineShanghai Jiaotong University Anting Hospital School of Mechanical EngineeringShanghai Jiaotong University
会议名称：《第十届全国生物力学学术会议暨第十二届全国生物流变学学术会议》
会议日期：2012年
学科分类：1002[医学-临床医学] 100210[医学-外科学(含：普外、骨外、泌尿外、胸心外、神外、整形、烧伤、野战外)] 10[医学]
基 金：funded by the Fastening and Joining Research Institute(FAJRI) at Oakland University Rochester Michigan USA and the Bone Research Institute at the Medical School of Shanghai Jiaotong University Shanghai P.R.China
摘 要：Various medical screws are widely used in orthopedic joint surgery procedures to support the fusion process of fractures and to stabilize bone ***,these fusion implants do not always maintain sufficient long-term stability over time,which often result in failure of the implant and fusion ***,it is essential to ensure high reliability level of these fusion implants at all *** bio-mechanical studies have demonstrated that numerous parameters affect screw pullout resistance using synthetic bone Those parameters include the screw outer and core diameters as well as the thread pitch,pilot hole dimensions,im-