Chondromyxoid Fibroma of Pelvis, Surgical Management of 8 Cases

Background: Chondromyxoid fibroma is a rare benign primary bone tumor of cartilaginous origin, which most commonly involves the metaphyseal bone of proximal tibia and distal femur. The purpose of the study is to report our experience with diagnosis and surgical management of Chondromyxoid fibroma in the pelvic region.

Methods: Eight consecutive patients with a final diagnosis of pelvic Chondromyxoid fibroma were treated from 2001 to 2010. We considered the presentations and outcome for surgical complications and local recurrence after extended curettage and allogenic corticocancellous bone grafting.

Results: Three patients were female and five were male. The median follow up period was 72 (30-126) months. The mean age of cases was 31.9 (20-41) years. Five patients had left side involvement and in the remaining three, the right side was involved. Four involved periacetabulum, two involved the ilium and the remaining two cases were ischiopubic. The mean Musculoskeletal Tumor Society Score was 94.1%. The major complications were recurrence in one case and herniation after pubic rami resection in another case.

Conclusion: Chondromyxoid fibroma should be distinguished from chondrosarcoma. Management recommendation includes extensive curettage and corticocancellous bone grafting. We also advocate use of fibular strut allograft for reconstruction of pubic rami after its resection to prevent hernia in cases with pubic rami involvement.