Comparison of subdermal and perforator delay techniques on a rat flap model

Area of Science:

• Plastic Surgery
• Tissue Engineering
• Experimental Surgery

Background:

• Investigated subdermal and perforator delay phenomena for flap survival.
• Flap necrosis remains a challenge in reconstructive surgery.

Purpose of the Study:

• To evaluate the efficacy of two delay techniques in improving flap survival.
• To assess the impact of these techniques on flap histology and vascularity.

Main Methods:

• Experimental study using 24 rats divided into control and two experimental groups.
• Delay procedures involved partial or complete perforator vessel interruption.
• Flaps were completely raised and reinserted after a 4-week delay period.

Main Results:

• No necrosis observed in experimental groups, compared to 21.9% in controls (P < 0.0001).
• Increased collagen density in both experimental groups; significant increase in the first experimental group (P = 0.0315).
• Enhanced vascular density in flaps of the first experimental group.

Conclusions:

• Both delay techniques are effective in preventing flap necrosis.
• These methods show potential for safe clinical application to enhance flap survival.