Hemicortical excision for low-grade selected surface sarcomas of bone

Area of Science:

• Orthopedic Oncology
• Surgical Oncology
• Bone Tumors

Background:

• Malignant surface tumors pose challenges for achieving adequate margins while preserving limb function.
• Traditional treatments like conventional excision and reconstruction with megaprostheses or intercalary allografts may lead to subsequent revision surgeries.

Purpose of the Study:

• To evaluate the efficacy of hemicortical excision and biological reconstruction for malignant surface tumors.
• To assess oncologic outcomes and functional results in patients treated with this technique.

Main Methods:

• A retrospective review of 10 patients with malignant surface tumors treated with hemicortical excision and reconstruction between January 2000 and June 2003.
• Tumors included conventional parosteal osteosarcoma, high-grade surface osteosarcoma, and surface chondrosarcoma.
• Reconstruction methods involved allograft, fibula autograft, or iliac crest autograft with internal fixation.

Main Results:

• All 10 cases achieved uninvolved surgical margins.
• No local recurrence was observed during a follow-up period of 40 to 61 months.
• Patients achieved high functional scores (MSTS score of 29 or 30), and no distant metastasis occurred.

Conclusions:

• Hemicortical excision is a reasonable surgical option for select malignant surface tumors, potentially obviating the need for joint replacement.
• Biological reconstruction with bone grafts may reduce the incidence of revision surgery compared to conventional methods.