The Bottom Line

A transposition flap borrows a section of skin from beside — not directly next to — a wound and moves it over an area of tissue that lies between them. This ability to "jump" over intervening skin makes transposition flaps uniquely versatile for wounds in tricky locations. The flap stays attached to its blood supply throughout, which supports reliable healing. The donor area where the flap came from is usually closed directly with sutures.

What Is a Transposition Flap?

When your surgeon removes a skin cancer, the resulting wound needs to be covered. For small wounds, direct closure works. For medium and large wounds — or wounds near important facial features — a local flap uses nearby skin to fill the defect.

A transposition flap is a specific type of local flap with a unique movement: it is lifted from one area and pivoted over a bridge of intact skin to reach a wound that is not directly adjacent. This is different from a rotation flap (which swings in a curve from the wound edge) or an advancement flap (which slides straight forward). A transposition flap leaps laterally, carrying its blood supply along with it through an uncut base called the pedicle.

Common transposition flap designs include the rhombic flap, the bilobed flap, and the Z-plasty — each engineered for specific wound shapes and locations.

When Is a Transposition Flap Used?

Your surgeon may choose a transposition flap when:

  • The wound is surrounded by skin that is too tight or distorted to use for a rotation or advancement flap
  • There is good, mobile skin available at a slight distance from the wound — and pivoting it over will cause less tension than pulling it straight across
  • The wound location (such as the nose tip, medial cheek, or helical ear rim) creates geometric constraints that suit a transposition design
  • Hiding the secondary scar (from the donor area) in a natural crease is possible with a transposition but not with other flap types

How the Procedure Works

Transposition flap surgery is done under local anesthesia in an office or outpatient surgical suite:

  1. Design: The surgeon measures the wound and plans the flap with a surgical marker. The flap must be sized and angled precisely so it reaches the wound without tension when pivoted.
  2. Anesthesia: Local anesthetic (lidocaine with epinephrine) is injected into the wound area and the planned flap zone. Epinephrine reduces bleeding and gives a cleaner surgical field.
  3. Incision and elevation: The flap is cut along its designed outline and carefully lifted off the layer of fat beneath the skin, keeping the base (pedicle) intact.
  4. Pivoting: The flap is rotated or swung over the barrier of skin between its origin and the wound, then positioned to cover the defect. The surgeon confirms it lies flat and has no tension on the pedicle.
  5. Securing and closing the donor site: The flap is sutured into the wound. The donor site — where the flap was taken from — is closed directly with sutures. Sometimes a small additional triangle of skin (a Burow's triangle) is removed to prevent puckering at the pivot point.

The procedure typically takes 45 minutes to 2 hours depending on wound size and complexity.

The Rhombic Flap: The Most Common Type

The rhombic (Limberg) flap is one of the most widely used transposition flaps in dermatologic surgery. The wound is converted into a rhombus (a four-sided shape with equal sides), and a matching rhombic flap is designed from adjacent tissue, then pivoted to fill it. The geometry ensures that tension is distributed evenly across multiple scar lines and that the main scar follows natural skin creases or the border of a facial feature. It is frequently used on the cheek, temple, nose, and scalp.

Recovery and Aftercare

  • Days 1–3: Expect swelling and bruising, especially on the face. Elevation of the head when resting helps reduce swelling.
  • Days 3–14: Clean the wound daily with mild soap and water; apply petroleum jelly and a fresh bandage. Do not use hydrogen peroxide or alcohol-based products.
  • Suture removal: Face sutures: 5 to 7 days. Scalp and body sutures: 10 to 14 days.
  • Weeks 2–6: The flap may appear slightly puffy or raised at the edges. A linear firmness (called induration) along the scar lines is normal during the inflammatory phase of healing.
  • Months 3–12: Scars continue to soften and lighten. Hypertrophic (raised) scarring occurs in 5 to 10% of cases and can be treated with silicone sheeting or corticosteroid injections. Most patients find the cosmetic result excellent by 12 months.

Infection occurs in approximately 1 to 2% of dermatologic flap procedures. Bleeding requiring intervention occurs in about 1 to 3%.

When to See a Dermatologist

  • Any area of the flap turns dark purple, blue-gray, or black — this may signal compromised blood flow and requires prompt evaluation
  • Wound edges separate or sutures pull through the skin
  • Increasing redness, warmth, pus, or fever above 101°F (38.3°C) — signs of infection
  • Bleeding that does not stop with 10 minutes of firm, continuous pressure
  • A raised, itchy, or thickening scar developing after 6 to 8 weeks — early treatment of hypertrophic scars produces better outcomes

Frequently Asked Questions

What is the difference between a transposition flap and a rotation flap?

A rotation flap pivots in a continuous arc directly from the wound edge — the flap and wound share a border. A transposition flap is designed separately from the wound, with a segment of intact skin in between; it is lifted and swung over that intervening skin to reach the wound. Transposition flaps are better when the wound shape or surrounding anatomy makes a rotation flap impractical.

Will the area where the flap was taken from (the donor site) look different?

The donor area is closed with sutures and heals as a linear scar. Surgeons design the donor site closure to follow natural skin creases or anatomical borders whenever possible, minimizing how noticeable the donor scar is. In most cases, the donor scar is less visible than the original wound site.

Is a transposition flap painful to recover from?

Discomfort after a transposition flap is usually mild to moderate and well-managed with acetaminophen or ibuprofen. Most patients describe a feeling of tightness or pressure rather than sharp pain. Facial procedures may cause significant bruising and puffiness for the first week, which can look more dramatic than it feels.

What if I need this after Mohs surgery on my nose or cheek?

The nose and cheek are among the most common sites for transposition flap reconstruction after Mohs surgery. The bilobed flap is especially popular for nasal tip defects because it redistributes tension from the nasal tip to the side of the nose and cheek, where skin is more mobile. Your Mohs surgeon will discuss your options on the day of surgery once the defect size and shape are known.

References

  1. Singer AJ, Dagum AB. Current management of acute cutaneous wounds. N Engl J Med. 2008;359(10):1037-1046.
  2. Aarabi S, Longaker MT, Gurtner GC. Hypertrophic scar formation: new approaches to treatment. PLoS Med. 2007;4(8):e234.
  3. Connolly SM, et al. AAD/ACMS/ASDSA/ASMS appropriate use criteria. J Am Acad Dermatol. 2012;67(4):531-550.
  4. Gold MH. Silicone gel, ointments, and occlusive dressings in managing hypertrophic scars. Semin Cutan Med Surg. 2000;19(4):272-277.

Trusted Resources

Always consult a board-certified dermatologist for diagnosis and treatment recommendations specific to your skin and health history.