Vascularised pedicular bone grafts

Area of Science:

• Orthopedic Surgery
• Regenerative Medicine
• Biomaterials Science

Background:

• Free bone grafts in large defects with poor vascularity risk absorption and revascularization failure.
• Vascularised bone grafts, with intact blood supply, achieve direct union and viability.
• These grafts act as a live bone bridge and source of osteogenic tissue.

Purpose of the Study:

• To review the principles and applications of vascularised bone grafts in reconstructive surgery.
• To highlight the advantages of pediculated grafts over free grafts in challenging bone defect scenarios.
• To discuss various muscle-pedicle and vascularised grafts for different anatomical locations.

Main Methods:

• Review of experimental studies and clinical applications of vascularised bone grafts.
• Analysis of different types of vascularised grafts based on their vascular pedicle (muscle or axial vessel).
• Examination of specific graft techniques and their success in treating bone defects and non-unions.

Main Results:

• Vascularised bone grafts demonstrate high viability and direct union, bypassing creeping substitution.
• Muscle-pedicle grafts (e.g., fibular, quadratus femoris, tensor fascia lata, rib) show successful application in tibial defects, femoral neck non-union, hip fusion, and spinal reconstruction.
• Newer concepts like radial forearm and erector spinae grafts require further clinical evaluation.

Conclusions:

• Vascularised bone grafts are superior to free grafts for large bone defects, especially in avascular beds.
• Muscle-pedicle grafts offer a reliable method for reconstructing massive bone defects and treating complex orthopedic conditions.
• Further research is needed to validate the clinical efficacy of emerging vascularised graft techniques.