In Ilizarov distraction osteogenesis, the surgical technique of choice for the corticotomy (bone division) to maximise periosteal and endosteal blood supply preservation is:

• A Open conventional saw-cut osteotomy with periosteal stripping
• B Percutaneous multiple drill-hole corticotomy with an osteotome, preserving periosteum and medullary vessels ✓
• C Fibular-style complete osteoperiosteal resection at the osteotomy site
• D Electrical wire-saw osteotomy through a small incision

Explanation

Ilizarov's corticotomy technique involves creating multiple drill holes in a line around the cortex through small skin punctures, then completing the division with a thin osteotome — carefully avoiding the medullary canal and intramedullary vessels. This preserves the periosteum and endosteal blood supply, which are critical for regenerate bone formation. Traditional oscillating saw osteotomies generate heat and strip periosteum, impairing the regenerate's vascularity and quality.

Reference: Maheshwari Essential Orthopaedics, 6th ed.

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Written and medically reviewed by the StethoPrep medical team.