中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (18): 2861-2865.doi: 10.12307/2023.314

• 骨科植入物 orthopedic implant • 上一篇    下一篇

腰椎经椎弓根系统内固定螺钉置入手感与扭矩的相关性

姜国正1,冯宁宁1,俞  兴2,赵  赫2,杨永栋2,曲  弋2,王逢贤2   

  1. 1北京中医药大学,北京市   100029;2北京中医药大学附属东直门医院,北京市   100700
  • 收稿日期:2022-03-07 接受日期:2022-06-08 出版日期:2023-06-28 发布日期:2022-09-17
  • 通讯作者: 俞兴,博士,主任医师,北京中医药大学附属东直门医院骨伤科,北京市 100700
  • 作者简介:姜国正,男,1997年生,陕西省安康市人,汉族,北京中医药大学在读硕士,主要从事脊柱脊髓研究。
  • 基金资助:
    潍坊奥精仿生骨多中心临床研究项目(横向课题),项目负责人:俞兴

Correlation between hand feeling and torque of screw insertion in lumbar pedicle system

Jiang Guozheng1, Feng Ningning1, Yu Xing2, Zhao He2, Yang Yongdong2, Qu Yi2, Wang Fengxian2   

  1. 1Beijing University of Traditional Chinese Medicine, Beijing 100029, China; 2Dongzhimen Hospital Affiliated to Beijing University of Traditional Chinese Medicine, Beijing 100700, China
  • Received:2022-03-07 Accepted:2022-06-08 Online:2023-06-28 Published:2022-09-17
  • Contact: Yu Xing, MD, Chief physician, Dongzhimen Hospital Affiliated to Beijing University of Traditional Chinese Medicine, Beijing 100700, China
  • About author:Jiang Guozheng, Master candidate, Beijing University of Traditional Chinese Medicine, Beijing 100029, China
  • Supported by:
    Weifang Aojing Biomimetic Bone Multi-Center Clinical Research Project (Horizontal Project) (to YX)

摘要:

文题释义:
经椎弓根螺钉内固定:通过椎弓根将螺钉拧入椎体起到锚固作用。这种锚固强度足以保证通过短节段内固定装置上的椎弓根螺钉与纵向连接棒之间的撑开、加压等作用力,提供三维矫正和坚强的内固定,恢复脊柱的正常排列,同时最大程度地保留了脊柱的活动节段,具有固定牢固、复位满意、手术创伤小、固定节段短等优点。
扭矩:使物体转动的一种特殊的力矩,等于力和力臂的乘积,国际单位是牛米(N·m),螺钉插入椎体的扭矩是指螺钉插入过程中骨-钉界面的阻力,螺钉插入扭矩大小反映的是椎体松质骨、椎弓根皮质骨、松质骨及椎弓根尺寸对螺钉的总体影响,能够较准确地反映螺钉的稳定性。

背景:螺钉松动是骨质疏松患者腰椎经椎弓根系统内固定术后的常见并发症,准确选择恰当的手感强弱进行椎弓根螺钉加强固定对于临床医生是一个难题。
目的:探讨腰椎椎弓根螺钉置入过程中手感与螺钉扭矩的相关性,初步筛选需行骨水泥强化的手感目测类比评分及扭矩范围。
方法:共纳入2020年1-12月于北京中医药大学附属东直门医院行腰椎内固定融合的腰椎退行性疾病患者34例。术中记录术者的手感、手感目测类比评分及螺钉最大扭矩值,术后定期复查评估螺钉松动情况。以手感强弱将188枚螺钉分为拧钉手感阻力小、一般、较大、费力组,比较4组之间的手感评分及扭矩值,分析扭矩值与手感的相关性。
结果与结论:①拧钉手感阻力小组全部行骨水泥加强固定,该组的手感评分及扭矩值均显著低于其他3组(P ≤ 0.001,P ≤ 0.05),扭矩值与置钉手感具有正向强相关;②结果表明手感评分及椎弓根螺钉扭矩值可以辅助术者判断螺钉的稳定性,当手感评分≤ 3,扭矩值≤ 1.3 N·m时,螺钉术后松动的可能性较大,建议行骨水泥加强固定。

https://orcid.org/0000-0002-6336-3795 (姜国正) 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱;骨折;内固定;数字化骨科;组织工程

关键词: 椎弓根螺钉, 腰椎退行性病变, 置钉手感, 扭矩, 螺钉松动, 骨密度, 骨质疏松

Abstract: BACKGROUND: Screw loosening is a common complication of lumbar transpedicle screw fixation in patients with osteoporosis. It is a difficult problem for clinicians to accurately choose the right time to strengthen pedicle screw fixation.  
OBJECTIVE: To investigate the correlation between hand feel and screw torque in the process of lumbar pedicle screw insertion, and initially screen the visual simulation score of hand feeling and the range of torque for bone cement reinforcement.
METHODS: A total of 34 patients with degenerative diseases of lumbar spine who underwent lumbar internal fixation fusion in Dongzhimen Hospital Affiliated to Beijing University of Traditional Chinese Medicine from January to December 2020 were included. During the operation, the operator’s hand feeling, visual simulation score of hand feeling and the maximum screw torque value were recorded, and the screw loosening was evaluated periodically after the operation. All 188 screws were divided into groups with small, average, large and laborious hand resistance according to hand feeling. Hand score and torque value among the four groups were compared, and the correlation between torque value and hand feeling was analyzed.  
RESULTS AND CONCLUSION: (1) The hand feeling resistance group of screw insertion was reinforced with bone cement. The feeling score and torque value of this group were significantly lower than those in the other three groups (P ≤ 0.001, P ≤ 0.05), and the torque value was strongly positively correlated with the feeling of screw insertion. (2) The results showed that hand feeling score and torque value of pedicle screw could assist the surgeon to judge the stability of screw. When hand feeling score ≤ 3 and torque value ≤ 1.3 N·m, the possibility of screw loosening after operation was greater, and bone cement fixation was recommended.

Key words: pedicle screw, lumbar degenerative lesion, hand feeling of screw insertion, torque, screw looseing, bone mineral density, osteoporosis

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