A cadaveric and in vitro controlled comparative investigation of percutaneous spinal cord lead anchoring

Raphael, J.H. and Mutagi, H. and Hanu-Cernat, D. and Gandimani, P. and Kapur, S. (2009) A cadaveric and in vitro controlled comparative investigation of percutaneous spinal cord lead anchoring. Neuromodulation, 12 (1). pp. 49-53. ISSN 10947159 (ISSN)

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Abstract

Spinal cord stimulator lead migration is a common problem. Anchor design may be a factor in its prevention. We have undertaken a cadaveric and in vitro comparative investigation of the force required to cause lead migration with a variety of anchor types. Thirty-eight spinal cord stimulator leads were anchored with short silastic (N = 8), long silastic (N = 16) and titanium (N = 10) devices in cadavers. Twenty-eight further spinal cord stimulator lead anchorings were undertaken on the bench with the titanium anchor and three different octrode leads. The median force to cause lead movement in cadavers was 0.55 Newtons (N) for short silastic anchors, 0.81 N and 0.63 N for two types of long silastic anchor, and 1.3 N for the titanium anchor. There was a significant difference between long and short silastic anchors (p < 0.01) and a significant difference between the titanium anchor and the silastic anchors (p < 0.003). There was an insignificant difference in the force required to cause lead movement repeated by the same operator (p = 0.36). There was no significant difference between inexperienced and experienced operators (p = 0.88). There was no significant difference between the different leads using the titanium anchor (p = 0.06). The titanium anchor prevents simulated lead movement at greater forces that the silastic anchors with a variety of leads. For silastic anchors, movement occurred at median force below that simulated with spinal movement; for the titanium anchor, movement occurred at a median force above that simulated with spinal movement. Further in vivo investigations are warranted to assess the potential of titanium anchoring to significantly reduce spinal cord stimulator lead migration. © 2009 International Neuromodulation Society.

Item Type: Article
Uncontrolled Keywords: Anchoring, Complications, Lead migration, Neurostimulation, Spinal cord stimulation, silastic, titanium, article, biomedical technology assessment, cadaver, device, electrode, force, implantation, intermethod comparison, spinal cord stimulation, surgical technique, suture anchor
Subjects: A900 Others in Medicine and Dentistry
Divisions: UoA Collections > UoA 03: Allied Health Professions, Dentistry, Nursing & Pharmacy
Depositing User: Yasser Nawaz
Date Deposited: 25 Feb 2017 19:50
Last Modified: 25 Feb 2017 19:50
URI: http://www.open-access.bcu.ac.uk/id/eprint/2510

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