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Eur Spine J. 2017 Nov;26(11):2941-2950. doi: 10.1007/s00586-017-5242-0. Epub 2017 Aug 1.

S2-AI screw placement with the aide of electronic conductivity device monitoring: a retrospective analysis.

Author information

1
Department of Neurosurgery, MedStar Georgetown University Hospital, 7 PHC, 3800 Reservoir Rd. NW, Washington, DC, 20057, USA. fasandhu@aol.com.
2
Department of Neurosurgery, MedStar Georgetown University Hospital, 7 PHC, 3800 Reservoir Rd. NW, Washington, DC, 20057, USA.

Abstract

STUDY DESIGN:

A retrospective analysis of two consecutive patients who underwent a novel surgical technique.

OBJECTIVE:

A report of a novel surgical technique utilizing an electronic conductivity device guidance to aide placement of S2-Alar-Iliac (S2-AI) instrumentation. Electronic conductivity guidance for instrumentation of the thoracolumbar spine is an accepted means of improving intraoperative accuracy. Although commercially available for percutaneous techniques, there is a paucity of literature regarding its use. Percutaneous implantation of S2-AI screws has been previously described as another technique surgeons can avail, primarily employing fluoroscopy as a means of intraoperative feedback. We describe a novel technique that utilizes electronic conductivity as an added feedback measure to increase accuracy of percutaneous S2-AI fixation.

METHODS:

Two patients were treated by the senior author (FAS) who underwent surgery employing S2-AI fixation utilizing an electronic conductivity device (Pediguard cannulated probe, Spineguard, Paris, France). The surgical technique, case illustrations, and radiographic outcomes are discussed.

RESULTS:

Stable and accurate fixation was attained in both patients. There were no peri-operative complications related to hardware placement.

CONCLUSION:

To the authors' knowledge, this is the first reported literature combining S2-AI screws with electronic conductivity for immediate intraoperative feedback. This technique has the opportunity to provide surgeons with increased accuracy for placement of S2-AI screws while improving overall radiation safety. This feedback can be particularly helpful when surgeons are learning new techniques such as placement of S2AI screws.

KEYWORDS:

Lumbosacral fusion; MIS; Pelvic fixation; S2-AI

PMID:
28766018
DOI:
10.1007/s00586-017-5242-0
[Indexed for MEDLINE]

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