The biomechanical stability of a novel totally bioabsorbable self-retaining PLA/nano-sizedβ-TCP cervical spine interbody fusion device in single level ACDF models
作者单位：Department of Orthopedic SurgeryZhongshan HospitalFudan University State Key Laboratory of Molecular Engineering of PolymersFudan University Affiliated Third Hospital of Nantong University Department of Orthopedic SurgeryJinshan HospitalFudan University
会议名称：《第三届全国中西医结合骨科微创学术交流会》
会议日期：2013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]
关 键 词：Biomechanics Cervical spine Cages Bioabsorbable Sheep
摘 要：Purpose:The purpose of this study was to compare the biomechanical stability provided by a novel PLA/nano-sizedβ-TCP bioabsorbable self-retaining cervical fusion cage(BCFC) device,and compare it with tricortical iliac crest bone graft and two types of PEEK cages according to their shape and anchoring design,and furtherly to compare with tricortical iliac crest bone graft plus anterior cervical plate(ACP). Methods:Quasistatic nonconstraining torques(maximum 1.5NM) induced flexion,extension,lateral bending(±1.5 NM),and axial rotation(±1.5 NM) on 32 sheep cervical spines(C2-C5).The motion segment C3-C4 was firstly tested intact,the following groups were tested after complete discectomy:autologous tricortical iliac crest bone graft, Wego cage,Solis cage,and ***,the group of autologous bone graft was evaluated with *** mean range of motion(ROM) was calculated from the loaddisplacement curves. Results:No significant difference in ROM between two types of PEEK cages and BCFC could be observed in flexion and extension,BCFC device significandy decreased ROM in lateral bending and axial rotation compared with all *** significant difference in ROM between BCFC and bone graft plus ACP could be determined in lateral bending and axial rotation. Conclusions:BCFC device showed comparable stability to autologous tricortical iliac crest bone graft and PEEK cages in single level ACDF models,it may be a viable alternative to current PEEK cages and anterior plate devices.