RF-Ⅱ型椎弓根螺钉复位固定滑脱腰椎的持骨力及相关因素研究  

A study of Spondylolisthesis treated with RF-Ⅱ pedicle screw system

作　　者：许文根[1] 黄宏前[1] 朱萍[1] 蔡海燕[1] 

机构地区：[1]解放军第117医院,浙江杭州310013

出　　处：《东南国防医药》2005年第1期15-16,20,共3页Military Medical Journal of Southeast China

摘　　要：目的　分析以 RF- 型椎弓根螺钉系统复位固定滑移椎体后 ,在特定时间内该系统对病椎维持复位的稳定性及影响该系统稳定性的相关因素。方法　回顾性研究自 1995年 4月至 1999年 12月间共 86例 ,均采用 RF- 型椎弓根螺钉行复位固定术。根据融合部位不同分成两组 :椎间植骨组和峡部植骨组。所有患者术后定期随访 ,通过标准 X片测量术前及术后各时点病椎滑移度数 ,并设定和量化四个相关因素即 :术前滑移度数 ,螺钉植入准确度及术后初始滑移度数和术后活动量。经统计学处理后分析术后复位丢失与时间的关系 ,两组间的差异及与各相关因素的相关度。结果　术后 6个月内复位有缓慢丢失倾向 ,但总体丢失率不大 ,且两组间无显著性差异 ,但丢失率与 2个因素 (术后初始滑移度和螺钉植入准确率 )的相关性要明显大于峡部植骨组。结论　 1该系统具有较强持骨力 ;2植骨在 6个月时初步达到骨性融合 ;3在椎间植骨组 ,更强调植入螺钉的准确度和病椎尽量复位。Objective To analyses the stability of RF-Ⅱ pedicle screw system and its related factors in the treatment of spondylolisthesis.Methods From April 1995 to December 1999, 86 cases of adult spondylolisthesis were treated with RF-Ⅱ pedicle screw system. The cases were divided into two groups according to different way of posterior lumbar Fusion. There were 54 cases with lumbar interbody fusion and 32 cases with isthmic bone grafting.Results There was a slowly lossing tendency of the reduction deurling the first 6 months after operation. There was no significant difference between two Groups. The inserting accuracy of pedicle screw and the initial reducted stage After operation were the two affected factors to the system.Conclusions The pedicle screw system has relatively strong power of keeping reduction. Bone fusion is roentgenologically observed in all patients within 6 months. It is much more important the pedicle screws being exactly inserted, and that the ill veterbera is fully reducted as far as possible in the group with lumbar interbody fusion.

关 键 词：复位固定 RF-Ⅱ 术后 植入 椎弓根螺钉 相关因素 椎间植骨 部位 

分 类 号：R681[医药卫生—骨科学] R683[医药卫生—外科学]