The article is concerned with the closure of a rectangular skin defect, via the enlongation of the advancement local skin flap. Local skin flaps are skin islands that are stretched, rotated or transposed in order to cover a skin defect, which was created due to the removal of a diseased or injured skin portion. The paper consists of two parts, namely the experimental part and the computational part. In the experimental part, in — vitro tension experiments conducted on piglet skin strips are described. The experimental results yielded the nonlinear stress — strain curves of skin. In the computational part, a stress — strain curve obtained in the experimental part, is used in a finite element model for the closure of a rectangular skin defect via the advancement flap. The skin, the subcutaneous fatty tissue and the underlying muscle tissue are included in the model. The muscle and the subcutaneous tissue mechanical responses, are obtained from the literature. Nonlinear finite element analysis with large deformations is performed in the model. Several stress distributions, within the skin layer, are obtained. Finite element results indicate that stress concentrations at the points where the stitches are done, are created. On the rest of the area of the advancement flap the stress distribution is almost uniform.
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- Closure of a Rectangular Skin Defect Via the Advancement Flap
D. A. Eftaxiopoulos
- Springer Netherlands
in-adhesives, MKVS, Zühlke/© Zühlke, Nordson/© Nordson, ViscoTec/© ViscoTec, Hellmich GmbH/© Hellmich GmbH