An anatomical evaluation and surgical approach to the perioral mound in facial rejuvenation.

BACKGROUND: Premature aging of the perioral soft tissues of the face is a common complaint of patients seeking facial rejuvenation, although its cause is unclear. The subcutaneous fat compartments of the face may be differentially affected by facial aging. Despite efforts to study and rejuvenate the aging periorbit, midface, and jowls, the effects of aging on the perioral mound have been less studied. METHODS: To better understand the cause of age-associated changes in the perioral area, a cadaver dissection study was performed. Eight fresh and fixed cadavers with evidence of perioral fullness were used in anatomical dissection. Anatomical observations and histologic examination were used to describe the age-related changes in this area. After describing the defect, the authors present a surgical approach to rejuvenation of this region, tailored to the findings in this anatomical study. RESULTS: Histologic sections demonstrated a lipomatous area without defined ligamentous attachments or encapsulations. Chambers of adipocytes in the hypodermis were separated by thin fibroseptations: a scaffold in the structural support of this region. Superficial lipodystrophy defines thisfacial region in the cadaver specimens. The end result is a fatty, ptotic perioral mound of tissue that is not well addressed by conventional rhytidectomy. CONCLUSIONS: The area of the perioral mound may represent a small, independent fat compartment or a differentially affected extension of the nasolabial compartment described by Pessa. This cadaver study has increased the authors' understanding of the perioral region and allowed them to improve results in its rejuvenation. The senior author's preferred approach is liposculpture with fine-cannula liposuction.

Submandibular gland I: an anatomic evaluation and surgical approach to submandibular gland resection for facial rejuvenation.

Submandibular gland resection for aesthetic reasons has been hotly debated. Detractors maintain that the procedure is dangerous because it puts too many important structures at risk, notably motor nerves. The present study was undertaken to elucidate the neurovascular and soft-tissue anatomy of the digastric triangle via cadaver dissections so that a surgical approach to achieve safe aesthetic submandibular resection could be performed. Fifteen digastric triangles dissections were performed in fixed and fresh cadaver specimens. The dissection focus was to understand the submandibular neurovascular relationships, capsule as well as fascial layers, and measurements to known structures. The marginal mandibular nerve is located external to the submandibular capsule, approximately 3.7 cm cephalad to the inferior margin of the gland. The hypoglossal nerve is posterior to the digastric sling in a position that is protected deep within the visceral layer of the neck. The lingual nerve is located underneath the mandibular border, crossing anterior to the submandibular duct. The vascular supply is variant, but with an average of one and a half vessels entering medially to the superficial lobe of the gland, one intermediate vessel entering medially to supply the superficial and deep lobes, and one deep perforator that runs from the central portion of the deep lobe to the superficial lobe. Appreciation of this anatomy is critical in the submental approach for partial resection. Although it can be technically challenging, the anatomy is straightforward and partial submandibular gland resection can be executed via a consistent, safe approach to optimize facial rejuvenation in certain patients.