Figure 1From: Parallel analysis of finite element model controlled trial and retrospective case control study on percutaneous internal fixation for vertical sacral fractures Sacral fracture typing by Denis. (a) Denis I, II and III zones of the sacrum (a1 anterior view, a2 posterior view); (b) a case (male, age 38) of a Denis II type left sacral fracture treated with percutaneous PTMP (b1 anteroposterior X-ray, b2 transverse plane CT scan); (c) a case (male, age 25) of a Denis II type right sacral fracture and a case (male, age 36) of Denis I type right sacral fracture both treated with percutaneous SIJS (anteroposterior X-ray).Back to article page