Abstract
The partial or complete excision of the hemipelvis with the sparing of the lower limb is an option of the treatment of pelvic chondrosarcomas and a therapeutic alternative of the interilio-abdominal disarticulation. The operation has the same indications as the interilio-abdominal disarticulation and offers a good solution for avoiding a mutilating operation. A giant periacetabular pelvic chondrosarcoma developed in Ennequin zone II and partial zone III, was resected and reconstructed with iliofemoral cooptation after complex investigations - pelvic X-ray, CT, MRI, Bioptic confirmation. The wide excision of the tumor, a stable reconstruction, and an efficient recovery are essential for a successful treatment of pelvic chondrosarcomas.