您现在的位置： 绿色健康网 >> 医学论文 >> 外科论文 >> 正文 　

锥状点式接触钢板的研制与临床应用初步观察

林则仕　郑远思　林培光　陈锡秋　李起鸿

【摘要】目的为避免因骨折而受损害的血供再受损害，研制锥状点式接触钢板（conical cylinder point contact fixator，CCPC－Fix）用于治疗骨干骨折。方法在标准普通钢板（standard conventional plate，SCP）的底面两侧对称性地设置圆形锥状钉4～6对，通过螺钉轴向作用力使圆形锥状钉尖锐的前端钉入骨内，形成点式接触固定，在钢板与骨之间留有约1.5mm的空隙，不压迫骨膜。CCPC－Fix与材料、尺寸完全一致的SCP做三点弯曲试验与扭转试验，比较两种不同钢板的力学性能。结果两种钢板的抗弯能力差异无显著性意义；当扭转角大于18°时，SCP的抗扭能力高于CCPC－Fix。临床观察42例48侧长管状骨骨干骨折，其中包括股骨12侧，胫骨26侧，尺桡骨10侧。术后不用外固定即可开始关节伸屈活动，4～6周可部分负重行走。无一例发生骨折再移位、退钉及钢板变形或断裂。尺桡骨与胫骨骨折平均3个月愈合，无明显外骨痂。股骨骨折平均4个月愈合。术后6～10个月可取出钢板。结论CCPC－Fix固定能最大限度地保护骨膜血供，骨折愈合快，有良好的稳定性，能满足不负重的早期功能锻炼需要。
【关键词】骨折；内固定器；骨折愈合

Design and preliminary clinical observation of conical cylinder point contact plate

LIN Zeshi, ZHENG Yuansi, LIN Peiguang, et al.
（Department of Orthopaedics, Guangdong Province Chaoyang People's Hospital, Chaoyang 515100, China）

【 Abstract】 Objective To describe the feature and application of conical cylinder point contact (CCPC)plate in treatment of diaphyseal fracture. Methods There were 4－ 6 pairs of conical cylinder beneath the standard conventional plate (SCP) symmetrically, from 1.5 to 4 mm in diameter. The nibs of conical cylinder were embedded about 1 to 1.5 mm in the cortex by the axial force of screws. The conical cylinder provided a gap of about 1.5 mm between the plate and the bone, which averts to compress periosteum and the cortex beneath plate. It was unnecessary to strip off the periosteum during the operation and postoperative external fixation is not needed either. Three-point bending test and torsion test were carried out with the plates fixed to plastic composite bones to compare the mechanical property of CCPC－ plate and SCP. Results It was found that bending property demonstrated no significant difference between the two kinds of plates. SCP has a better torsion property than that of CCPC－ plate when torsion angle was >18° . 42 cases with the diaphyseal fractures including 12 femoral, 26 tibial and 10 radioulnar, wer

[1] [2] [3] 下一页


  • 上一个医学论文：

  • 下一个医学论文：
    • 相关文章
    锥状点式接触钢板内固定对局部皮质骨微
    止血带辅助下点式剥脱术治疗原发性大隐
    Copyright © 2006-2012 绿色健康网(www.gio.org.cn) All Rights Reserved.
    声明：网站信息仅供参考，不能作为诊断及医疗的依据。