This is a crescentic advancement flap (a Burrow's triangle single tangent advancement flap).
The crescentic advancement flap remains a superior option for defects in the perialar location, an area that is challenging as surgical defects can encompass more than one cosmetic unit (
Yoo et al., Dermatol Surg 2003). There are different ways to visualize and memorize various types of flaps: Two of these methods are included below in
purple and blue:
Burrow’s Triangle Displacement Flaps (Tissue advancement, requires extensive undermining, depends on skin laxity and tissue elasticity)
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Burrow’s flap (Single tangent advancement flap)
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O to T flap (Bilateral single tangent advancement flap)
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A to T flap (Bilateral single tangent advancement flap)
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U flap (Double tangent advancement flap)
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H flap (Bilateral double tangent advancement flap)
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Curvilinear tangent advancement flap (Rotation, Karapandzic, Mustarde)
Defect Reconfiguration Flaps (Island pedicle flaps, tissue advancement depends on pedicle movement, blood supply from pedicle)
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Island pedicle flap (Kite flap, myocutaneous pedicle flap)
Tissue Reorientation Flaps (Reorientation of adjacent skin in area of laxity)
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Rhombic transposition flap (Limberg, Dufourmentel, Webster’s)
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Bi-lobed transposition flap
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Nasolabial transposition flap (Melolabial fold flap)
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Spear’s flap
Tissue Importation Flaps (Covering large wounds, cover avascular defects, two stages)
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Paramedian forehead flap (Indian flap)
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Nasolabial interpolation flap
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Retroauricular pedicle flap (Pin back flap)
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Modified Hughes flap
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Abbe cross-lip flap
Advancement Flaps (Utilize laxity adjacent to the wound. Incision made on either side of wound and tissue moved linearly)
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O to T advancement flap
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A to T advancement flap
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Island pedicle advancement flap
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Post auricular advancement flap
Rotation Flaps (Utilize tissue at a distant site, which is then rotated and draped over the wound)
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O to Z
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Mustarde rotation flap
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Back cut rotation flap
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Spiral rotation flap
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Dorsal nasal flap
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Glabella turndown flap
Transposition Flaps (Move donor tissue over normal tissue to the site of the defect. All transposition flaps create a secondary defect which requires closure)
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Z-plasty transposition flap
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Rhombic transposition flap
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Paramedian forehead transposition flap
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Bi-lobed transposition flap
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Flag transposition flap
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Banner transposition flap
Interpolation Flaps (Two-stage flaps in which the base of the flap is not immediately adjacent to the recipient site. They can tunnel under or bridge over normal skin)
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Axial interpolation flap
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Island pedicle flap
Clinical Pearl: A simplified way of looking at flaps is to divide them into advancement, rotation, transposition, and interpolation flaps.
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Advancement flaps: Utilize laxity adjacent to the wound, an incision is made on either side of the wound, and tissue is moved in a linear fashion to cover the defect
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Rotation flaps: Utilize tissue at a distant site, which is then rotated and draped over the wound
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Transposition flaps: Move donor tissue over normal tissue to the site of the defect. All transposition flaps create a secondary defect which requires closure
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Interpolation flaps: Two-stage flaps in which the base of the flap is not immediately adjacent to the recipient site. They can tunnel under or bridge over normal skin.