REPAIR OF FAILED TRANSPEDICLE SCREW FIXATION - A BIOMECHANICAL STUDY COMPARING POLYMETHYLMETHACRYLATE, MILLED BONE, AND MATCHSTICK BONE RECONSTRUCTION

被引：202

作者：

PFEIFER, BA

KRAG, MH

JOHNSON, C

机构：

[1] LAHEY CLIN FDN,BOSTON,MA

[2] UNIV VERMONT,SCH MED,BURLINGTON,VT 05405

来源：

SPINE | 1994年 / 19卷 / 03期

关键词：

BONE RECONSTRUCTION; PEDICLE SCREW; PULLOUT STRENGTH;

D O I：

10.1097/00007632-199402000-00017

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

In a random, controlled laboratory study, pedicle screws placed in human cadaveric vertebrae were axially loaded to failure. Three repair methods were tested. Use of low pressure polymethylmethacrylate yielded 149% of the original pullout strength, milled bone yielded 70% of the initial pullout strength, and matchstick bone yielded 56% of the initial pullout strength. Two incidents of cortical penetration during reinsertion in the matchstick group occurred. The results were statistically analyzed.

引用

页码：350 / 353

页数：4

共 7 条

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