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Alternative TitleExperimental study of the influence of different intrinsic properties of pedicle screws on the electrical resistance
王洪伟; 廖新华; 马显光; 李长青; 韩建达; 周跃
Source Publication中国脊柱脊髓杂志
Indexed ByCSCD
Contribution Rank3
Funding Organization国家科技支撑计划课题(2012BAI14B02);; 军队临床高新技术重大项目(2010gxjs072);; 机器人学国家重点实验室开放课题(2010-O01)
Keyword椎弓根螺钉 电阻 脊柱 直径 空心 实心
Other AbstractObjectives: To study the influence of pedicle screw structural features(solid and cannulated pedi- cle screws, diameters) on the electrical resistance of pediele screws and to discuss its possible effect on the accuracy of pedicle screw insertion monitored by stimulus-evoked electromyography. Methods: Electrical re- sistance measurements were obtained from 12 pedicle screw varieties(6 screws of each manufacturer: solid or cannulated pediele screws with diameter of 5.0mm, 6.0mm, 7.0mm in Johnson company and solid or eannu- lated pediele screws with diameter of 4.5mm, 5.5mm, 6.5mm in Medtronic company) across the screw shank with an interval of 20mm based on measured constant current and voltage using potentiometer and multimeter according to Ohm's law. Results: Electrical resistance of pedicle screws with 4.5mm, 5.5mm, 6.5mm in di- ameter was (0.142±0.003)Ω, (0.110±0.007)Ω (0.086±0.002)Ω in solid pedicle screws respectively and (0.398±0.002)Ω, (0.347±0.003)Ω, (0.290±0.003)Ω in cannulated pedicle screws respectively from Johnson company. Electrical resistance of pedicle screws with 5.0mm, 6.0mm, 7.0ram in diameter was (0.149±0.001)Ω, (0.123± 0.004)Ω, (0.095±0.001)Ω ,in solid pedicle screws and (0.291±0.001)Ω, (0.237±0.001)Ω, (0.148±0.001)Ω incannulated pedicle screws got from Medtronic company, and the electrical resistance of cannulated screws was much higher than that of solid screws in the same diameter group (P〈O.05). The screw with largest diameter had lower electrical resistance than the screws with shorter diameters, whether solid screws or cannulated screws(P〈0.05). Conclusions: Cannulated pedicle screws have higher electrical resistance compared to the sol- id pedicle screws with the same length and diameter, smaller diameter pedicle screws have higher electrical resistance compared to the larger diameter pedicle screws, we should pay much attention to its influence when stimulus-evoked electromyographic test was used in placing pedicle screw.
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GB/T 7714
王洪伟,廖新华,马显光,等. 椎弓根螺钉的不同结构特点对螺钉电阻的影响[J]. 中国脊柱脊髓杂志,2013,23(3):263-266.
APA 王洪伟,廖新华,马显光,李长青,韩建达,&周跃.(2013).椎弓根螺钉的不同结构特点对螺钉电阻的影响.中国脊柱脊髓杂志,23(3),263-266.
MLA 王洪伟,et al."椎弓根螺钉的不同结构特点对螺钉电阻的影响".中国脊柱脊髓杂志 23.3(2013):263-266.
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