Flap Reconstruction: Advancement, Rotation, Transposition

Overview / Definition Flap reconstruction refers to a surgical technique that involves the transfer of tissue from one area of the body to another to repair defects, often resulting from trauma, excision of tumors, or congenital deformities. The three main types of flaps include advancement, rotation, and transposition flaps, each categorized based on the movement and design of the tissue being transferred. Epidemiology Flap reconstruction is common in dermatologic surgery, particularly in the management of skin cancers and chronic wounds. The prevalence of skin cancer, particularly non-melanoma types, necessitates a robust understanding of flap techniques among dermatologists. Non-melanoma skin cancer (NMSC) accounts for over 5 million cases annually in the U.S. Flap reconstruction is often required following Mohs micrographic surgery. Pathophysiology / Mechanism Flap reconstruction relies on the principles of vascularity and tissue viability. Each flap type maintains its blood supply through its pedicle, which is crucial for healing and integration into the recipient site. Understanding the vascular anatomy of the area is essential to prevent complications such as necrosis. Advancement flaps move tissue directly forward, maintaining a direct blood supply. Rotation flaps involve a circular movement around a pivot point, allowing for tissue repositioning. Transposition flaps involve moving tissue from one area to another, often requiring a longer pedicle. Clinical Presentation Patients requiring flap reconstruction often present with defects resulting from surgical excision, trauma, or chronic wounds. The size, location, and characteristics of the defect influence the choice of flap. Key clinical presentations include: Defects located on the face, scalp, and extremities are commonly reconstructed using flaps. Patients may have associated conditions such as diabetes or vascular disease that complicate healing. Diagnosis / Workup The diagnosis typically involves a tho