ĐẶC ĐIỂM HÌNH ẢNH TỔN THƯƠNG GIẢI PHẪU GÃY XƯƠNG - SAI KHỚP CÙNG CHẬU TRÊN PHIM CT- SCAN CÓ DỰNG HÌNH 3D KHUNG CHẬU

Abstract

Background: The sacroiliac joint is located at the back of the pelvis, obscured by the organs in front, so examination, diagnosis based on routine X-rays and treatment are difficult. Research results of Montana M.A.: 35% of fractures and sacroiliac joint dislocations are not detected on routine X-rays. CT-scan with 3D pelvic reconstruction can recreate images of the pelvis in 3dimensional space, helping to fully detect and diagnose injuries and guide treatment. Objectives: To study the morphology of fracture - dislocations sacroiliac joint injuries on CT-scan pelvic with three dimensional (3D) reconstruction. Materials and methods: CT-scan pelvic with three dimensional reconstruction images of cases dislocation SIJ, fracture – dislocation sacroiliac joint, treated at the Trauma and Orthopedics Department of Cho Ray Hospital from January 2015 to June 2019. Result: Most of cases were crescent fractures and sacroiliac joint dislocation (64.3%), in which the Day III type was highest rate (41.7%). The main displacement direction is backward, upward and outward (42.9%). There are 3 cases of anterior fractures – dislocation sacroiliac joint (looked type). Most of cases combined with other injuries as ischiopubic rami fractures, pelvis rami fractures (35/48 patients). 8/48 patients were bilateral fracture - dislocations sacroiliac joint. Conclusion: This study provides some patterns of fracture - dislocations sacroiliac joint injuries, that were very helpful in the diagnosis, classification and choosing treatment methods.