The clinical efficacy was compared between 3D navigation-assisted percutaneous iliosacral screw(3DPS)and minimally invasive reconstruction plate(MIRP)in treating sacroiliac complex injury and the surgical procedures o...The clinical efficacy was compared between 3D navigation-assisted percutaneous iliosacral screw(3DPS)and minimally invasive reconstruction plate(MIRP)in treating sacroiliac complex injury and the surgical procedures of 3DPS were introduced.A retrospective analysis was performed on 49 patients with sacroiliac complex injury from March 2013 to May 2017.Twenty-one cases were treated by 3DPS,and 28 cases by MIRP.Intraoperative indexes as operative time,blood loss,incision length,length of hospital stay and postoperative complications were respectively documented.Quality of reduction was postoperatively evaluated by Matta radiological criteria,and clinical effect was assessed by Majeed scoring criteria at the last followup.Operative time and hospital stay were significantly shortened,and blood loss,and incision length were significantly reduced in 3DPS group as compared with those in MIRP group(P<0.05).No statistically significant difference was found between 3DPS group and MIRP group in the assessment of reduction and function(P>0.05).It was concluded that both 3DPS and MIRP can effectively treat the sacroiliac complex injury,and 3DPS can provide an accurate,safe and minimally invasive fixation with shorter operative time and hospital stay.展开更多
目的应用有限元分析法,探究以不同置钉角度三螺钉固定治疗SandersⅡB型跟骨骨折的生物力学稳定性.方法应用Mimics Medical 19.0软件建立跟骨三维模型,通过Geomagic Wrap软件及Sliodworks软件对跟骨三维模型进行切割及装配操作,建立Sand...目的应用有限元分析法,探究以不同置钉角度三螺钉固定治疗SandersⅡB型跟骨骨折的生物力学稳定性.方法应用Mimics Medical 19.0软件建立跟骨三维模型,通过Geomagic Wrap软件及Sliodworks软件对跟骨三维模型进行切割及装配操作,建立SandersⅡB型跟骨骨折及不同内固定模型:(1)1枚螺钉经跟骨结节内侧、外侧和跟骨外侧壁固定载距突,其余2枚螺钉经跟骨后方向跟骰关节方向固定(纵行方向交叉、水平方向平行),模型共计三组(A组、B组、C组);(2)1枚螺钉经跟骨结节内侧、外侧和跟骨外侧壁固定载距突,其余2枚螺钉经跟骨后方向跟骰关节方向固定(纵行方向交叉、水平方向交叉),模型共计三组(D组、E组、F组);(3)1枚螺钉经跟骨结节内侧、外侧和跟骨外侧壁固定载距突,1枚螺钉经跟骨后方固定跟骨外侧壁,最后1枚螺钉经跟骨后方固定跟骰关节(纵行方向平行、水平方向平行),模型共计三组(G组、H组、I组).运用Ansys 17.0软件对9组模型进行参数设定并进行有限元分析,分析跟骨整体骨块应力、螺钉应力、骨折块位移及螺钉形变情况.结果在相同条件加载下,内固定模型D组和E组在跟骨整体等效应力、螺钉受力等效应力、骨折块位移及螺钉形变方面均小于其他7组模型.结论1枚螺钉经跟骨结节内侧或外侧向固定载距突,另2枚螺钉经跟骨后方固定跟骰关节(纵行方向交叉、水平方向交叉)时,更符合跟骨生物力学特征,可为临床SandersⅡB型跟骨骨折螺钉内固定治疗提供参考.展开更多
文摘The clinical efficacy was compared between 3D navigation-assisted percutaneous iliosacral screw(3DPS)and minimally invasive reconstruction plate(MIRP)in treating sacroiliac complex injury and the surgical procedures of 3DPS were introduced.A retrospective analysis was performed on 49 patients with sacroiliac complex injury from March 2013 to May 2017.Twenty-one cases were treated by 3DPS,and 28 cases by MIRP.Intraoperative indexes as operative time,blood loss,incision length,length of hospital stay and postoperative complications were respectively documented.Quality of reduction was postoperatively evaluated by Matta radiological criteria,and clinical effect was assessed by Majeed scoring criteria at the last followup.Operative time and hospital stay were significantly shortened,and blood loss,and incision length were significantly reduced in 3DPS group as compared with those in MIRP group(P<0.05).No statistically significant difference was found between 3DPS group and MIRP group in the assessment of reduction and function(P>0.05).It was concluded that both 3DPS and MIRP can effectively treat the sacroiliac complex injury,and 3DPS can provide an accurate,safe and minimally invasive fixation with shorter operative time and hospital stay.
文摘目的应用有限元分析法,探究以不同置钉角度三螺钉固定治疗SandersⅡB型跟骨骨折的生物力学稳定性.方法应用Mimics Medical 19.0软件建立跟骨三维模型,通过Geomagic Wrap软件及Sliodworks软件对跟骨三维模型进行切割及装配操作,建立SandersⅡB型跟骨骨折及不同内固定模型:(1)1枚螺钉经跟骨结节内侧、外侧和跟骨外侧壁固定载距突,其余2枚螺钉经跟骨后方向跟骰关节方向固定(纵行方向交叉、水平方向平行),模型共计三组(A组、B组、C组);(2)1枚螺钉经跟骨结节内侧、外侧和跟骨外侧壁固定载距突,其余2枚螺钉经跟骨后方向跟骰关节方向固定(纵行方向交叉、水平方向交叉),模型共计三组(D组、E组、F组);(3)1枚螺钉经跟骨结节内侧、外侧和跟骨外侧壁固定载距突,1枚螺钉经跟骨后方固定跟骨外侧壁,最后1枚螺钉经跟骨后方固定跟骰关节(纵行方向平行、水平方向平行),模型共计三组(G组、H组、I组).运用Ansys 17.0软件对9组模型进行参数设定并进行有限元分析,分析跟骨整体骨块应力、螺钉应力、骨折块位移及螺钉形变情况.结果在相同条件加载下,内固定模型D组和E组在跟骨整体等效应力、螺钉受力等效应力、骨折块位移及螺钉形变方面均小于其他7组模型.结论1枚螺钉经跟骨结节内侧或外侧向固定载距突,另2枚螺钉经跟骨后方固定跟骰关节(纵行方向交叉、水平方向交叉)时,更符合跟骨生物力学特征,可为临床SandersⅡB型跟骨骨折螺钉内固定治疗提供参考.