Delayed prefabricated arterial composite venous flaps: an experimental study in rabbits

Area of Science:

• Regenerative Medicine
• Biomaterials Science
• Surgical Innovation

Background:

• Composite flaps are crucial in reconstructive surgery.
• Integrating autologous or alloplastic materials presents challenges.
• Arteriovenous perfusion offers a potential method for flap nourishment.

Purpose of the Study:

• To evaluate the viability and survival of prefabricated composite flaps with implanted cartilage or porous polyethylene.
• To compare arteriovenous (AV) prefabricated flaps with conventional axial prefabricated flaps.
• To assess the impact of AV perfusion on flaps containing biomaterials.

Main Methods:

• 40 rabbits underwent flap elevation with cartilage or porous polyethylene implantation.
• Experimental groups received delayed conversion to AV flaps after 2 weeks.
• Control groups had conventional axial flap elevation; all flaps were histologically examined.

Main Results:

• Mean survival rates exceeded 99% for all groups (AV and control, cartilage and polyethylene).
• Histological examination showed similar wound healing features between experimental and control groups.
• Arteriovenous perfusion effectively nourished prefabricated flaps with implanted materials.

Conclusions:

• Prefabricated composite flaps with autologous cartilage or alloplastic porous polyethylene can be successfully nourished by arteriovenous perfusion.
• Delayed composite AV flaps exhibit comparable survival rates to delayed conventional axial flaps.
• This technique holds promise for enhanced reconstructive surgery outcomes.