Vascularized bone grafts to the upper extremity. Indications and technique

Area of Science:

• Orthopedic Surgery
• Vascular Surgery
• Regenerative Medicine

Background:

• Segmental bone defects exceeding 6 cm, often resulting from trauma or tumor resection, present significant challenges in avascular beds.
• Conventional bone grafting methods may be insufficient for large defects, necessitating advanced reconstructive techniques.
• Free vascularized bone grafts are emerging for complex upper extremity reconstructions, including epiphyseal arrest and radial club hand.

Observation:

• Massive autogenous bone grafts with intact vascular pedicles significantly reduce healing time and immobilization periods.
• These vascularized grafts are particularly effective in treating large segmental bone defects in challenging avascular environments.
• The free vascularized bone graft shows promise in pediatric upper extremity conditions like congenital radial club hand.

Findings:

• Free vascularized bone transfers, such as fibular transfer, require specialized microvascular surgical teams and extended operative times.
• Potential complications include the sacrifice of a major lower extremity vessel, though graft viability is maintained as a conventional graft if anastomosis fails.
• Successful outcomes depend on meticulous surgical planning, patient selection, defect preparation, microvascular anastomosis, and graft fixation.

Implications:

• Vascularized bone grafting represents a critical advancement for reconstructing large bone defects unresponsive to conventional treatments.
• This technique offers a promising solution for improving functional outcomes in trauma and tumor reconstruction patients.
• Further development and refinement of microvascular techniques can expand the application of vascularized bone grafts in complex orthopedic and reconstructive surgery.