18 Case 6 Diagnosis Treatment Chondrosarcoma tumor in the lower pelvis Gender i I Age 63 years old Tumor in the lower pelvis. In order to assure entire removal of the tumor while saving maximum healthy bones, Synergy3DMed produced custom guides for removal of the tumor, as well as a 30 model of the affected area. Dr. Nikomarov D. Orthopedic Oncology, Rambam Health Care Campus. Clinical Issue A tumor involving the Pubis, lschium and Acetabulum bones. Surgical Plan performing one cut through the acetabulum sparing maximum healthy bone. PSKit Plan because of the difficult approach, 3 cutting guides from were created: anterior, posterior and inner acetabular.