Axial and random skin flaps

Area of Science:

• Plastic Surgery
• Regenerative Medicine
• Surgical Innovation

Background:

• Skin replacement techniques have evolved significantly over the past two decades.
• Advances in understanding skin and subcutaneous tissue structure and vascularity are key drivers.
• Literary data analysis has been crucial in documenting and informing these changes.

Purpose of the Study:

• To review and analyze the evolution of pedicle flap techniques in skin replacement.
• To highlight the impact of improved anatomical and vascular understanding on flap grafting.
• To classify different flap types based on their biological behavior and application.

Main Methods:

• Literature review and analysis of existing data on pedicle flap techniques.
• Classification of flaps into axial and random types based on vascular supply.
• Evaluation of historical and current practices in flap reconstruction.

Main Results:

• Discovery and widespread adoption of regional pedicle grafts due to better vascular understanding.
• Classification of flaps into axial and random types, revealing distinct biological behaviors.
• Identification of surgical tube flaps as outdated for circular reconstruction.
• Axial skin flaps eliminate the need for delay procedures due to consistent blood supply.
• Random flaps may require delay procedures or the use of independent flaps for larger areas.
• Reduction of axial flap pedicles led to the development of island flaps.
• Island flaps are applicable for regional and distant replacement (via microvascular methods).
• The concept of musculocutaneous flaps emerged from these experimental and clinical findings.

Conclusions:

• Modern pedicle flap techniques, informed by vascular and anatomical knowledge, have surpassed older methods.
• Axial and island flaps offer significant advantages over traditional random and tube flaps.
• Microvascular techniques have expanded the application of flaps for distant reconstruction.
• Continued research into flap design and vascularity promises further advancements in skin replacement therapy.