Internal Fixation of Sacroiliac Joint via Posterior Approach in Management of Posterior Pelvic Injuries

Object: Sacroiliac dislocation frequently poses a complex problem for the surgical management and stabilization because of the anatomical and biomechanical factors of this transition zone between the spine and pelvis. The authors had used a modification of the Galveston technique, originally described by Allen and Ferguson in the treatment of scoliosis, to achieve rigid spinal - pelvic fixation in patient's sacroiliac dislocation with vertical and rotational shear. Methods: Twelve patients who had required spinal - pelvic fixation secondary to sacroiliac dislocation and instability fixation was achieved by intraoperative placement of S1 pedicle screws and contoured titanium rods bilaterally into the ilium. Results: During the follow - up period of18 to 36 months (average 26 months), Postoperative posterior fracture reduction was excellent in 9 patients (75%), good in 2 (17%) and fair in 1 patient (8%) (7). Conclusion: The combined use of S1 pedicle screws and the Galveston technique provided immediate stability and sufficient reduction of sacroiliac dislocation.