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Solid and hollow pedicle screws affect the electrical resistance: A potential source of error with stimulus-evoked electromyography
Wang HW(王洪伟); Liao XH(廖新华); Ma XG(马显光); Li CQ(李长青); Han JD(韩建达); Zhou Y(周跃)
作者部门机器人学研究室
关键词Electrical Resistance Electromyography Pedicle Screw Percutaneous Pedicle Screw
发表期刊INDIAN JOURNAL OF ORTHOPAEDICS
ISSN0019-5413
2013
卷号47期号:4页码:352-356
收录类别SCI
WOS记录号WOS:000323619000005
产权排序3
资助机构Source of Support: The Chinese National High Technology Research and Development Program (2012BAI14B00) and the foundation of state key laboratory of robotics (2011-O01),
摘要

Background: Although stimulus evoked electromyography (EMG) is commonly used to confirm the accuracy of pedicle screw placement. There are no studies to differentiate between solid screws and hollow screws to the electrical resistance of pedicle screws. We speculate that the electrical resistance of the solid and hollow pedicle screws may be different and then a potential source of error with stimulus-evoked EMG may happen. Materials and Methods: Resistance measurements were obtained from 12 pedicle screw varieties (6 screws of each manufacturer) across the screw shank based on known constant current and measured voltage. The voltage was measured 5 times at each site. Results: Resistance of all solid screws ranged from 0.084 Omega to 0.151 Omega (mean = 0.118 +/- 0.024 Omega) and hollow screws ranged from 0.148 Omega to 0.402 Omega (mean = 0.285 +/- 0.081 Omega). There was a significant difference of resistance between the solid screws and hollow screws (P < 0.05). The screw with the largest diameter no matter solid screws or hollow screws had lower resistance than screws with other diameters. No matter in solid screws group or hollow screws group, there were significant differences (P < 0.05) between the 5.0 mm screws and 6.0 mm screws, 6.0 mm screws and 7.0 mm screws, 5.0 mm screws and 7.0 mm screws, 4.5 mm screws and 5.5 mm screws, 5.5 mm screws and 6.5 mm screws, 4.5 mm screws and 6.5 mm screws. The resistance of hollow screws was much larger than the solid screws in the same diameter group (P < 0.05). Conclusions: Hollow pedicle screws have the potential for high electrical resistance compared to the solid pedicle screws and therefore may affect the EMG response during stimulus-evoked EMG testing in pedicle screw fixation especially in minimally invasive percutaneous pedical screw fixation surgery.

语种英语
WOS标题词Science & Technology ; Life Sciences & Biomedicine
WOS类目Orthopedics
关键词[WOS]Lumbar Interbody Fusion ; Internal-fixation ; Placement ; Spine ; Complications ; Accuracy ; Emg
WOS研究方向Orthopedics
引用统计
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/14052
专题机器人学研究室
通讯作者Zhou Y(周跃)
作者单位1.Department of Orthopaedics, Xinqiao Hospital, Chongqing, 1Department of Physics, College of Medicine, Third Military Medical University, Chongqing
2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Science, Shenyang, China
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GB/T 7714
Wang HW,Liao XH,Ma XG,et al. Solid and hollow pedicle screws affect the electrical resistance: A potential source of error with stimulus-evoked electromyography[J]. INDIAN JOURNAL OF ORTHOPAEDICS,2013,47(4):352-356.
APA Wang HW,Liao XH,Ma XG,Li CQ,Han JD,&Zhou Y.(2013).Solid and hollow pedicle screws affect the electrical resistance: A potential source of error with stimulus-evoked electromyography.INDIAN JOURNAL OF ORTHOPAEDICS,47(4),352-356.
MLA Wang HW,et al."Solid and hollow pedicle screws affect the electrical resistance: A potential source of error with stimulus-evoked electromyography".INDIAN JOURNAL OF ORTHOPAEDICS 47.4(2013):352-356.
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