A young adult with an Ewing's sarcoma of the fibular diaphysis is being planned for surgical management. The biological reconstruction method that uses the patient's own vascularised cortical bone — harvested on a pedicled or free flap basis — to fill the resection defect is known as:

• A Distraction osteogenesis
• B Intercalary allograft
• C Vascularised fibula autograft ✓
• D Massive endoprosthesis (megaprosthesis)

Explanation

Vascularised fibula autograft (VFA) is a biological reconstruction using the ipsilateral or contralateral fibula harvested with its peroneal vascular pedicle as a free flap. It provides viable cortical bone with osteogenic potential, hypertrophies under loading, and has a lower infection and fracture risk than allografts or endoprostheses — ideal in young patients requiring durable long-term reconstruction after intercalary resection. Distraction osteogenesis (bone transport Ilizarov) is an alternative but is time-consuming. Allografts are avascular and prone to late fracture and non-union.

Reference: Maheshwari Essential Orthopaedics, 6th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.