A novel anatomical self-locking plate fixation for both-column acetabular fractures  

作　　者：Ming Li Shuai-Yi Wang Jing-Wei Xiao 

机构地区：[1]Department of Traumatic Orthopaedics,The Medical College of Ningbo University Affiliated Ningbo No.6 Hospital,Ningbo 315040,Zhejiang Province,China

出　　处：《Chinese Journal of Traumatology》2022年第6期345-352,共8页中华创伤杂志（英文版）

摘　　要：Purpose:To compare the stability of the posterior anatomic self-locking plate(PASP)with two types of popular reconstruction plate fixation,i.e.double reconstruction plate(DRP)and cross reconstruction plate(CRP),and to explore the influence of sitting and turning right/left on implants.Methods:PASP,DRP and CRP were assembled on a finite element model of both-column fractures of the left acetabulum.A load of 600 N and a torque of 8 N·m were loaded on the S1 vertebral body to detect the change of stress and displacement when sitting and turning right/left.Results:The peak stress and displacement of the three kinds of fixation methods under all loading conditions were CRP>DRP>PASP.The peak stress and displacement of PASP are 313.5 MPa and 1.15 mm respectively when turning right;and the minimal was 234.0 Mpa and 0.619 mm when turning left.Conclusion:PASP can provide higher stability than DRP and CRP for both-column acetabular fractures.The rational movement after posterior DRP and PASP fixation for acetabular fracture is to turn to the ipsilateral side,which can avoid implant failure.

关 键 词：Acetabular fractures Internal fixation Posterior anatomic self-locking plate(PASP) BIOMECHANICS Stability 

分 类 号：R687.3[医药卫生—骨科学]