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Original Article
- Radiologic Evaluation for the Safe Zone of Percutaneous Iliosacral Screw Fixation
- Jong Keon Oh, Su Young Bae, Jong Oh Kim, Kwon Jae Roh, Jeong Joon Lee, Sang Yeol Chang
- J Korean Soc Fract 2002;15(3):336-341. Published online July 31, 2002
- DOI: https://doi.org/10.12671/jksf.2002.15.3.336
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Abstract
PDF - PURPOSE
To evaluate the correlation of the safe zone of percutaneous iliosacral screw fixation with sacral dysmorphism and sacral alar slope variation.
MATERIALS AND METHODS
We studied the plain radiographs and the pelvic bone CT images of 52 patients. We reviewed each cases in terms of Routt 's dysmorphism and sacral alar slope variation(anterior, coplanar and posterior to inter-ICD line). We divided each cases into narrow and wide groups by the width of safe zone for the transverse 6.5mm cannulated cancellous screw. The data were analysed by McNemar x2-test and Cochran Q-test(p<0.05).
RESULTS
Typical sacral dysmorphism was found in five cases(9%). Four cases with dysmorphism(80%) and eighteen non-dysmorphic cases(38.2%) revealed narrow safe zones. The sacral slopes were anterior in 16 cases, coplanar in 25 cases, and posterior in 11 cases. The safe zone was significantly narrow in the group with anterior slope variation.
CONCLUSION
We could not found definite correlation between sacral dysmorphism and a narrow safe zone because the incidence of dysmorphism was too low in our study which differed from Routt 's report. An anterior sacral alar slope on CT can be a significant risk indicator for potential narrow safe zone and the risk of screw malposition. -
Citations
Citations to this article as recorded by
- Measurement of Optimal Insertion Angle for Iliosacral Screw Fixation Using Three-Dimensional Computed Tomography Scans
Jung-Jae Kim, Chul-Young Jung, Jonathan G. Eastman, Hyoung-Keun Oh
Clinics in Orthopedic Surgery.2016; 8(2): 133. CrossRef - Operative Treatment of Unstable Pelvic Ring Injury
Sang Hong Lee, Sang Ho Ha, Young Kwan Lee, Sung Won Cho, Sang Soo Park
Journal of the Korean Fracture Society.2012; 25(4): 243. CrossRef - Upper Sacral Morphology Related to Iliosacral Screw Fixation in Korean
Jung-Jae Kim, Chul-Young Jung, Hyoung-Keun Oh, Byoung-Se Yang, Jae-Suck Chang
Journal of the Korean Fracture Society.2007; 20(2): 115. CrossRef
- Measurement of Optimal Insertion Angle for Iliosacral Screw Fixation Using Three-Dimensional Computed Tomography Scans
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