华西口腔医学杂志

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超高分子量聚DL-乳酸可吸收骨折内固定系统治疗下颌骨骨折的实验研究

郑谦,刘磊,魏世成,赵宗林,熊成东,罗福成   

  1. 610041 四川大学华西口腔医学院颌面外科学教研室(郑 谦,刘 磊,魏世成),成都陆军总医院颌面外科(赵宗林),中国科学院成都分院有机化学研究所(熊成东,罗福成)
  • 收稿日期:2002-08-25 修回日期:2002-08-25 出版日期:2002-08-20 发布日期:2002-08-20
  • 基金资助:

    本课题为国家863计划资助项目(编号715-002-0141)

Experimental Research with Animal on Super-high Molecular Weight Poly-DL-lactic Acid Internal Fracture-fixing System Used to Treat Mandible Fracture

Zheng Qian, Liu Lei, Wei Shicheng, et al   

  1. Zheng Qian, Liu Lei, Wei Shicheng, et al West China College ofStomatology, Sichuan University Zhao Zonglin ChiefHospitalofChengdu MilitaryArea Xiong Chengdong, Luo Fucheng Chengdu Institute ofOrganic Chemistry, Chinese AcademyofSciences
  • Received:2002-08-25 Revised:2002-08-25 Online:2002-08-20 Published:2002-08-20

摘要:

目的:观察超高分子量聚DL-乳酸(PDLLA)骨折内固定系统治疗犬下颌骨骨折的疗效及安全性。方法:采用超高分子量PDLLA骨折内固定系统对犬下颌骨骨折进行内固定。在术后1年内,观察其活体状况、大体解剖学形态、下颌骨折区处X线片表现、组织病理学变化。结果:超高分子量PDLLA骨折固定系统用于治疗犬下颌骨骨折具有机械强度高、固定效果可靠等优点,与金属内固定系统的疗效相似。而且PDLLA降解、吸收速度适中,生物相容性良好,既能保证骨折的正常愈合,又避免了金属接骨板的应力遮挡效应。结论:超高分子量聚DL-乳酸是一种理想的骨折内固定系统。

关键词: 超高分子量聚DL-乳酸, 下颌骨骨折, 骨折内固定,

Abstract:

Objective:The purpose of this study was to evaluate the safety and therapy effects of super-high molecular weight poly-DL- lactic acid (PDLLA) internal fracture-fixing system on the treatment of mandible fracture in dogs.Methods:The authors treated dogscmandible fracture with super-high molecularweight polylactic acid internal fracture-fixing system and observed the activity of these dogs. In 1, 3, 6, 12 months after the operation, the authors took the specimens out from dogs and evaluated with anatomi- cal, pathological and radiographic methods.Results:The therapeutic effects of super-high molecularweight PDLLA internal frac- ture-fixing system are similarwith that of stainless steel internal fracture-fixing systems.Conclusion:Super-high molecular weight PDLLA internal fracture-fixing system can be used in the treatment of mandible fracture.

Key words: poly_DL_lacticacid, mandible fracture, internal fracture_fixing systemdogs, dogs