Computer-Navigated Bone Cutting in the Resection of a Pelvic Bone Tumor and Reconstruction with a Massive Bone Allograft.

Abstract

We present here a surgical technique using a navigation system and an oscillating saw for the resection of a pelvic bone tumor combined with an allograft reconstruction. The surgeon and radiologist together delineate the tumor on each magnetic resonance imaging (MRI) slice; then the surgeon defines target planes for tumor resection and transfers them to the allograft. With the patient in the lateral decubitus position, combine ilioinguinal with iliocrural and obturator surgical approaches to expose the ilium. Perform the osteotomies using the navigation system to guide the saw blade, following predefined target planes; perform a biopsy. Perform the osteotomies using the navigating saw, following the same target planes as used for the tumor resection. Fix the graft and cement a femoral stem in place; then reinsert all detached tendons and elevated muscles. Editor's note: This technique is based on preliminary work that has not been presented in a peer-reviewed case series publication. IndicationsContraindicationsPitfalls & Challenges.