三枚与四枚螺钉置入治疗Pauwels Ⅲ型股骨颈骨折的有限元分析

BACKGROUND: Femoral neck fracture is mainly fixed by three inverted triangle cannulated screws. Scholars have proposed to add a cannulated screw to enhance the fixation strength of femoral neck fracture of Pauwels III type based on three cannulated screw fixation, but the stability is not verified.     

颈后路减压治疗颈椎后纵韧带骨化症19例

目的 探讨颈后路减压治疗颈椎后纵韧带骨化症的临床效果.方法 采用颈后路侧块螺钉固定后行全椎板切除减压10例及单开门椎板成形术9例,采用JOA评分及Hirabayashi恢复率评价手术效果.结果 随访1～50月,平均(20.0±10.2)月,全椎板切除减压组JOA评分与单开门椎板成形术组比较,差异无统计学意义(P>0.05).结论 颈后路单开门椎板成形术为首选治疗颈椎后纵韧带骨化症的方法,但当骨化灶对双侧脊髓均有压迫,则更适合采用全椎板切除减压.