“…The surgical goals for treatment of periacetabular malignancy are primarily aimed toward wide surgical resection in the case of primary sarcomas and the elimination of pain in the case of metastatic disease; however, in both cases, surgeons seek a stable and durable reconstruction, adequate soft tissue reconstruction, preservation or improvement of function, and uneventful wound healing. Many procedures have evolved to help fulfill these goals, including external hemipelvectomy [4,5,18], resection without reconstruction (internal hemipelvectomy) [7,8,14,18,30], arthrodesis [14,18], cement and screw or pin fixation [25,29], rotationplasty [19], pure allograft reconstruction [6,10,17,18,24,27,31,32], allograft-prosthetic-composite reconstruction [17,18], and autoclaved or irradiated autograft [17,29]. None of these procedures seems superior, and each comes with its share of disadvantages-with MSTS scores ranging from 45% to 70% of normal, and major complication rates ranging from 30% to 100%.…”