ABSTRACT
112 A ventrodorsal view radiograph of the pelvis of an eight-year-old Miniature Schnauzer which had been hit by a car (112a). The dog was unable to bear weight on either hindlimb due to coxofemoral luxation and contralateral sacroiliac frac tureluxation. This dog’s sacroiliac fracture-luxation was reduced and stabilized in order to hasten the dog’s recovery (112b). i. In one study, 38% of sacroiliac fracture-luxations repaired by lag screw fixation experienced premature screw loosening. Dogs with the lag screws placed into the sacral body had the lowest rate of loosened fixations. Describe the anatomic land - marks on the sacral wing which can be used by the surgeon to locate the sacral body for screw placement. ii. What has been determined to be the optimum depth of screw placement into the sacral body in order to minimize implant loosening? iii. Combinations of pins and screws have been used to stabilize sacroiliac frac tureluxa tions. Rank the implant combinations used to repair sacroiliac frac ture-luxation in order of increasing stability.
