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KMID : 0386420130260010032
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Journal of the Korean Fracture Society
2013 Volume.26 No. 1 p.32 ~ p.36
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Anatomical Study of Symphysis Pubis Using 3 Dimensional Computed Tomography in Koreans
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Kim Ji-Wan
Park Jung-Min
Chang Jae-Suk
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Abstract
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Purpose: To acquire anatomical data for the normal pelvic bone structure using three-dimensional computed tomography (3D CT) and to propose the most appropriate angle and screw length for safe screw insertion during symphysis pubis plating. Materials and Methods: We performed 3D CT analysis in 52 patients who required plating and selected a medial and lateral insertion point between the symphysis pubis and the pubic tubercle. Using a three-dimensional medical image analysis program, we evaluated the appropriate screw length, sagittal angle, and oblique angle at each point in this cohort. Results: At the medial point, the sagittal angle was determined to be 49.1° with an average screw length of 49.4 mm. At the lateral point, we calculated an average screw length of 49.1 mm, oblique angle of 23.2°, and sagittal angle of 45.7°. The screw length was longer in men than in women (4.6 mm and 7.3 mm, respectively) at the medial and lateral point. Conclusion: At the symphysis pubis diastasis, we can insert the screw caudally at 49° with a minimal length of 37 mm at the medial point. We can insert the screw caudally at 46°, medially at 23°, with a minimal 34 mm length at the lateral point.
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KEYWORD
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Pelvis, Pelvic ring injury, Pubic symphysis diastasis, Screw fixation
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