What is meant by transposition flap?
A transposition flap is a random pattern flap that borrows skin laxity from an adjacent area in order to fill a defect in an area with little or no skin laxity and, in the process, redirects the vectors of tension during closure.
What is a rhombic transposition flap?
Rhombic flaps are geometric local transposition flaps and offer significant versatility within reconstructive surgery. This flap is most commonly used to fill skin cancer defects of the head and neck region.
Is rhomboid flap a transposition flap?
The rhomboid (Limberg) flap is a transposition flap that, like the bilobed flap and the Z-plasty, depends on the pliability of the adjacent skin, which can be determined by pinching various areas between the thumb and forefinger (2).
What is the purpose of a flap graft?
Flap surgery involves the transfer of a living piece of tissue from one part of the body to another, along with the blood vessels that keep it alive. It may be used for a variety of reasons, including breast reconstruction, open fractures, large wounds, and, in rare cases, for improving a cleft lip and palate.
What is the transposition?
Definition of transposition 1a : an act, process, or instance of transposing or being transposed. b : the transfer of a segment of DNA from one site to another in the genome. 2a : the transfer of any term of an equation from one side over to the other side with a corresponding change of the sign.
What is an islanded flap?
island flap a flap consisting of skin and subcutaneous tissue, with a pedicle made up of only the nutrient vessels. jump flap one cut from the abdomen and attached to a flap of the same size on the forearm. The forearm flap is transferred later to some other part of the body to fill a defect there.
Why is transposition needed?
The transposing is necessary as there is capacitance between conductors, as well as between conductors and ground. This is typically not symmetrical across phases. By transposing, the overall capacitance for the whole line is approximately balanced. Transposing also reduce effects to communication circuits.
What is Abbe flap?
The Abbe flap is a full-thickness composite flap, involving the transfer of the skin, muscle, and mucosa of the central part of the lower lip to the upper lip.
What is the purpose of transposition flaps?
Transposition flaps. Transposition flaps take advantage of regional laxity by mobilizing tissue from an adjacent area of excess laxity (see image below) into the area without slack. Reservoirs of extra skin. Transposition flaps have the following advantages: They accomplish redistribution and redirection of tension.
What is the difference between Dufourmentel and Webster flap?
The Webster flap is made similarly to the Dufourmentel flap, but the second incision is made at a 30-degree (rather than 60-degree) angle to the first incision and the inferior corner includes an M-plasty. Both of these modifications allow for tension sharing between the primary and secondary defects.
What is a bilateral opposed 30° transposition flap?
Figure 4.11Bilateral opposed 30° transposition flaps may be used to close an operative wound. Each flap closes half of the wound. The advantages of such a repair are multidirectional tension redirection and tension redistribution, similar to an O-Z bilateral rotation flap.
What is banner type transposition flap?
Banner-type transposition flaps. The classic banner-type transposition flap is a finger-shaped random pattern (cutaneous) flap that makes use of areas of adjacent laxity. This flap allows for the placement of a long linear secondary scar in a skin fold or crease or along the junction of 2 cosmetic units.