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http://dx.doi.org/10.3340/jkns.2016.1212.008

Freehand S2 Alar-Iliac Screw Placement Using K-Wire and Cannulated Screw : Technical Case Series  

Choi, Ho Yong (Department of Neurosurgery, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine)
Hyun, Seung-Jae (Department of Neurosurgery, Spine Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine)
Kim, Ki-Jeong (Department of Neurosurgery, Spine Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine)
Jahng, Tae-Ahn (Department of Neurosurgery, Spine Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine)
Kim, Hyun-Jib (Department of Neurosurgery, Spine Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine)
Publication Information
Journal of Korean Neurosurgical Society / v.61, no.1, 2018 , pp. 75-80 More about this Journal
Abstract
Objective : Among the various sacropelvic fixation methods, S2 alar-iliac (S2AI) screw fixation has several advantages compared to conventional iliac wing screw. However, the placement of S2AI screw still remains a challenge. The purpose of this study was to describe a novel technique of free hand S2AI screw insertion using a K-wire and cannulated screw, and to evaluate the accuracy of the technique. Methods : S2AI screw was inserted by free hand technique in sixteen consecutive patients without any fluoroscopic guidance. The gearshift was advanced to make a pilot hole passing through the sacroiliac joint and directing the anterior inferior iliac spine. A K-wire was placed through the pilot hole. After introducing a cannulated tapper along with the K-wire, a cannulated S2AI screw was installed over the K-wire. Results : Thirty-three S2AI screws were placed in sixteen consecutive patients. Thirty-two screws were cannulated screws, and one screw was a conventional non-cannulated screw. Thirty out of 32 (93.8%) cannulated screws were accurately positioned, whereas two cannulated screws and one non-cannulated screw violated lateral cortex of the ilium. Conclusion : The technique using K-wire and cannulated screw can provide accurate placement of free hand S2AI screw.
Keywords
S2 alar-iliac screw; Sacropelvic fixation; Free hand technique; Cannulated screw;
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Times Cited By KSCI : 1  (Citation Analysis)
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