CAJ | 학술논문

背景：最近研究表明经皮椎体后凸成形后存在相邻椎体骨折的问题，推测骨水泥泄露可能是其中的重要原因。目的：探讨经皮椎体后凸成形中骨水泥量对相邻椎体终板的生物力学影响。方法：建立骨质疏松性椎体压缩骨折病理三维有限元模型，分别在骨折椎体内填充10%，20%和30%椎体容积的骨水泥，分析轴向压缩、前屈和后伸三种情况下相邻椎体终板应力的变化情况。结果与结论：与填充前相比，骨水泥容积按10%，20%和30%填充后，相邻椎体终板各种情况下的应力均增加，且随着骨水泥填充容积增加而增加。说明经皮椎体后凸成形中骨水泥用量增加，会导致相邻椎体骨折增加的概率。
배경：최근연구표명경피추체후철성형후존재상린추체골절적문제，추측골수니설로가능시기중적중요원인。목적：탐토경피추체후철성형중골수니량대상린추체종판적생물역학영향。방법：건립골질소송성추체압축골절병리삼유유한원모형，분별재골절추체내전충10%，20%화30%추체용적적골수니，분석축향압축、전굴화후신삼충정황하상린추체종판응력적변화정황。결과여결론：여전충전상비，골수니용적안10%，20%화30%전충후，상린추체종판각충정황하적응력균증가，차수착골수니전충용적증가이증가。설명경피추체후철성형중골수니용량증가，회도치상린추체골절증가적개솔。
BACKGROUND:Recent studies have proved the presence of adjacent vertebral fractures after percutaneous kyphoplasty, suggesting that cement leakage may be an important reason. OBJECTIVE:To investigate the effect of bone cement amount during percutaneous kyphoplasty on adjacent vertebral endplate using finite element analysis. METHODS: Three-dimensional finite element pathological model of Osteoporotic vertebral compression fracture was established using finite element analysis, and 10%, 20% and 30% volume of bone cement were filed, respectively. Then the adjacent vertebral endplate stress under the axial compression, anteflexion and rear protraction were analyzed. RESULTS AND CONCLUSION: Compared with that before operation, the adjacent vertebral endplate stress increased with the increase in filed bone cement volume, suggesting that the increased amount of bone cement wil lead to the increasing of adjacent vertebral re-fractures.