CAJ | 학술논문

目的探讨掌侧与背侧钢板固定桡骨远端背侧粉碎性骨折时的抗压缩、抗扭转差异性.方法将12侧新鲜成人尸体桡骨标本制成桡骨远端背侧粉碎性骨折模型,随机分为2个大组,分别进行掌侧与背侧钢板螺钉固定;再将每个大组分为2个亚组,分别进行轴向压缩试验和水平扭转试验.检测指标:轴向压缩强度、轴向压缩刚度、水平扭转强度和水平扭转刚度.结果在轴向压缩试验中,掌、背侧两组之间轴向压缩强度差异有统计学意义(P＜0.05),背侧组大于掌侧组;在生理压缩载荷下,掌、背侧两组刚度值差异有统计学意义(P＜0.05),背侧组高于掌侧组.在水平扭转试验中,两组水平扭转强度与扭转刚度差异都没有统计学意义,但数据显示,掌侧组都略强于背侧组.结论在抗压缩方面,两组的压缩强度以及压缩刚度差异均有统计学意义,背侧组要优于掌侧组;而在抗旋转方面,两组的扭转强度与扭转刚度差异均无统计学意义,但掌侧组在数据上均稍大于背侧组.
목적 탐토장측여배측강판고정뇨골원단배측분쇄성골절시적항압축、항뉴전차이성.방법 장12측신선성인시체뇨골표본제성뇨골원단배측분쇄성골절모형,수궤분위2개대조,분별진행장측여배측강판라정고정;재장매개대조분위2개아조,분별진행축향압축시험화수평뉴전시험.검측지표:축향압축강도、축향압축강도、수평뉴전강도화수평뉴전강도.결과 재축향압축시험중,장、배측량조지간축향압축강도차이유통계학의의(P＜0.05),배측조대우장측조;재생리압축재하하,장、배측량조강도치차이유통계학의의(P＜0.05),배측조고우장측조.재수평뉴전시험중,량조수평뉴전강도여뉴전강도차이도몰유통계학의의,단수거현시,장측조도략강우배측조.결론 재항압축방면,량조적압축강도이급압축강도차이균유통계학의의,배측조요우우장측조;이재항선전방면,량조적뉴전강도여뉴전강도차이균무통계학의의,단장측조재수거상균초대우배측조.
Objective To investigate the biomechanical differences in the aspects of anti-compression and anti-torsion of plate fixation applied through volar or dorsal approaches in the treatment of extra-articular distal radius fracture.Methods Dorsally comminuted distal radius fracture was created in 12 fresh cadaver radius specimens.The specimens were then randomly assigned to volar plating group and dorsal piing group,with 6 eack Plate fixation of the fracture WaS done via a volar approach and a dorsal approach respectively.Subsequently.each group was further divided into 2 subgroups to undergo axial compression and horizontal torsion test using MTS machine.The following parmneters were measured:axial compression strength axial compression rigidity,horizontal torsion strength,and horizontal torsion rigidity.Results The compression test showed statistically significant difference of compression strength between the volar and dorsal groups,that of the dorsal group being stronger.Similarly,there was statistically significant difference in the compression rigidity between these two groups,that of the dorsal group being stronger.In the torsion tests,however,we have noticed that although the torsion strength and rigidity of the volar group were slighfly stronger than those of the dorsal group,the diitemnce was not statistically significant.Conclusion Dorsal plating of dorsally corraninuted distal radius fracture yields significantly stronger anti-compressionfeatures comparingto volar plating.The anti-torsion features between volar plating and dorsal plating are comparable although the parameters of volar plating are slightly stronger.