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January 1984

Experimental Analysis of the Adjunctive Z-plasty in the Closure of Fusiform Defects

Author Affiliations

From the Virginia Mason Research Center and Department of Otolaryngology, University of Washington (Dr Gustafson); the Section of Otolaryngology and Plastic Surgery (Dr Larrabee), the Mason Clinic, Seattle; and the Seven Corners Medical Building (Dr Borges), Falls Church, Va.

Arch Otolaryngol. 1984;110(1):41-44. doi:10.1001/archotol.1984.00800270045012

• Facial defects too large for primary closure can sometimes be repaired with the addition of a unilateral or bilateral adjunctive Z-plasty. In this study, the mechanics of the adjunctive Z-plasty are examined experimentally. In vivo experiments using piglets show that closure tension is decreased 30% by each Z-plasty. The true lengthening of the Z when transposed is 80% of that theoretically predicted. The deformation caused by fusiform excision and closure with and without undermining and with one or two Z-plasties is evaluated. In general, the Z-plasty exchanges deformation perpendicular to the long axis of excision for deformation parallel to that axis. A clinical case using the adjunctive Z-plasty for the repair of a large chin defect is reported.

(Arch Otolaryngol 1984;110:41-44)

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