Fig. 1From: The usefulness of wide excision assisted by a computer navigation system and reconstruction using a frozen bone autograft for malignant acetabular bone tumors: a report of two casesPelvic osteotomy and free-freezing method. The tumor is first excised by osteotomy. Then, after peeling off the soft tissue, we performed curettage of the tumor and drilling to prevent bone breakage. After freezing in liquid nitrogen, osteosynthesis was performed using plates, screws, and a bone graftBack to article page