From: Spinopelvic dissociation: extended definition, physical examination, classification, and therapy
301 SPD classification | Force–displacement | Fixation methods |
---|---|---|
Type I | Â | Â |
 Ia | Non-obvious displacement or kyphotic deformity Relative stability | Transiliac–transsacral penetration screws Trans-sacroiliac screws for fixation of sacroiliac joint |
 Ib |  Non-obvious displacement or Kyphotic deformity Relative stability | Transiliac–transsacral penetration screws Trans-sacroiliac screws for fixation of sacroiliac joint |
 Ic | Flexion displacement, Lack of support Instability | Posterior spinopelvic fixation (Triangular osteosynthesis) |
 Id | Lumbosacral displacement | Posterior lumbosacral fixation + Sacral lag screw |
Type II | Â | Â |
 IIa | Unilateral sacral fracture-displacement, contralateral sacroiliac joint displacement | Fixation of sacroiliac joint (transiliac–transsacral penetration screws and/or sacroiliac screw) |
 IIb | Unilateral sacral fracture-displacement, contralateral sacroiliac joint displacement accompany ilium fracture | Fixation of sacroiliac joint and/or Repair the ilium |
Type III | Â | Â |
 IIIa | Bilateral sacroiliac joint displacement | Fixation of sacroiliac joint (transiliac–transsacral penetration screws and/or sacroiliac screw) |
 IIIb | Unilateral sacroiliac joint displacement, contralateral sacroiliac joint displacement accompany ilium fracture | Fixation of sacroiliac joint and/or Repair the ilium + LC-2 screw |
 IIIc | Bilateral sacroiliac joint displacement accompany ilium fracture | Fixation of sacroiliac joint and/or Repair the ilium + LC-2 screw |