Analysis of Flap Tension in Surgical Rejuvenation of the Midface

Abstract

Objective. To determine the flap tension present for 2 different surgical approaches for midface lifts and whether a gingivobuccal incision for release of the midface periosteum will diminish the resultant load on the midface flap. Study Design. Cadaver study. Setting. Anatomy laboratory at the University of Florida. Subjects and Methods. Twelve fresh-frozen cadaver heads are subjected to a transblepharoplasty (TB) approach on one side of the cadaver head while a transtemporal (TT) approach is performed on the contralateral side. The tension (grams) generated by moving the midface flap a distance of 1.03 cm is recorded by a digital load cell. A gingivobuccal incision is made on each side to allow transoral periosteal release (TOPR) of the midface flap, and the experiment is repeated. Three trials are performed for each operation, and the average load is calculated. A paired t test is applied. Results. The tension resulting from the TT approach (172 g) was not found to be significantly different from that of the TB approach (179 g; P = .75). Significant differences in the resultant tension were not appreciated when comparing standard techniques to TT with TOPR (141.5 g; P = .27) or for TB with TOPR (164.1 g; P = .45). Discussion. An experimental method is described for determining flap tension in facial rejuvenation surgery. No significant difference is found between flap tensions generated in the TB and TT approaches to the midface.