Fig. 1

A typical case of the new adjustable modular hemipelvic replacement. A Design schematic diagram of the new adjustable modular hemipelvic prosthesis. B Preoperative radiographs of a 54-year-old man showing angiosarcoma of the left pelvis involving acetabulum and ilium. C Preoperative abdominal aortic balloon placement and embolization of tumor-feeding artery and internal iliac artery. D Preoperative 3D printing model of pelvic tumor and simulated surgery. E, F Precise and complete resection of the tumor guided by a custom osteotomy guide plate. G Postoperative radiographs of a 54-year-old man showing malignant angiosarcoma of the left pelvis involving acetabulum and ilium