Fig. 4From: Sacral osteotomy combined with triangular osteosynthesis in the treatment of malunion and nonunion of vertically displaced pelvic fracturesa Sacral osteotomy line (blue circle), located lateral to the sacral foramen. b Vertebral plate retractor used to separate the bone to confirm complete cutting and disconnection of the sacrum. c Distraction performed between the pedicle screws (L4 and L5) and the iliac screw for unilateral vertical pelvic displacementBack to article page