The reconstructive ladder in plastic surgery describes escalating complexity of closure options. Which technique represents the correct principle of a 'perforator flap' that has revolutionised reconstructive surgery?

• A A flap of skin and subcutaneous fat nourished by a single arteriovenous pedicle from a distant donor site
• B A random pattern flap relying on subdermal plexus perfusion without a named vessel
• C A skin and subcutaneous fat flap elevated on a named perforating vessel that traverses the underlying muscle without sacrificing the muscle itself ✓
• D A flap that includes the overlying skin, subcutaneous fat, fascia, and muscle in continuity

Explanation

Perforator flaps (e.g., DIEP — deep inferior epigastric perforator flap, ALT — anterolateral thigh flap) are free or pedicled flaps that harvest skin and subcutaneous fat nourished by named perforating vessels that pierce the underlying muscle (musculocutaneous perforators) or fascia (fasciocutaneous perforators), without sacrificing the underlying muscle. This preserves muscle function and reduces donor site morbidity compared to conventional myocutaneous flaps (e.g., TRAM flap). Perforator flaps require microsurgical dissection and expertise in perforator anatomy.

Reference: Bailey & Love's Short Practice of Surgery, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.