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A COMPARISON BETWEEN VASCULARISED AND NON-VASCULARISED FIBULA AUTOGRAFTS FOR RECONSTRUCTION OF BONE DEFECTS DUE TO TUMOUR RESECTION.



Abstract

Fibula autograft reconstruction, both vascularised (v) and non-vascularised (nv), has been established as a standard method in limb salvage surgery of bone and soft tissue tumours of the extremities. This study retrospectively analyses the results of fibula autograft procedures in general and in relation to vascular reconstruction or simple bone grafting.

Since the implementation of the Vienna Tumour Registry in 1969, 26 vascularised and 27 non-vascularised fibula transfers have been performed at our institution in 53 patients, 26 males and 27 females with an average age of 21 years (range 4 to 62 years). Indications included osteosarcoma in 18, Ewing’s Sarcoma in 15, adamantinoma in 5, leiomyosarcoma in 3 and others in 12. Thirty patients were operated for reconstruction of the tibia (8v/22 nv), 7 for the femur (6v/1nv), 7 for defects of the forearm (4v/3nv), 5 for metarsal defects (all v), 3 for the humerus (1v/2nv) and one patient was treated for a pelvic defect (nv).

Average follow-up was 63 months (range 2 to 259 months). 43 patients showed successful primary bony union of the autograft. In 12 cases pseudarthrosis indicated further surgical revision, 9 of these patients were primarily reconstructed by use of a nv autograft. 4 patients, 2 with v and 2 with nv reconstruction, suffered a fracture of the transplant and were operated for secondary osteosynthesis. 10 patients with v bone graft developed wound healing disturbances which led to surgery, 2 patients with nv grafts suffered such complications. In 2 patients recurrent infection of a nv and a v fibula transfer led to the implantation of a modular tumour prostheses or amputation, retrospectively. Function of all patients with primary bone healing was rated satisfactory.

The use of fibula autograft in limb-salvage surgery under oncological conditions allows biological reconstruction with good functional outcome, especially when primary bone healing is achieved. Vascularised bone grafting seems to have a better outcome in terms of primary bone healing than simple fibula bone grafting, and thus represents a feasible choice in the reconstruction of bone defects from tumour resection.

Correspondence should be addressed to: EFORT Central Office, Technoparkstrasse 1, CH – 8005 Zürich, Switzerland. Email: office@efort.org