The Submental Fat Compartment of the Neck

Division of Plastic Surgery, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas.
Seminars in Plastic Surgery 11/2009; 23(4):288-91. DOI: 10.1055/s-0029-1242180
Source: PubMed


The anatomic understanding of the superficial compartments of the head and neck are evolving. Recently, studies have shown that the superficial fat is sequestered into separate "compartments"; however, the superficial anatomy of the submental region of the neck has yet to be defined, and improved understanding of this area may lead to advances in our ability to rejuvenate the neck. This cadaveric investigation revealed that there is one superficial fat compartment in the submental region. The anterior boundary of this compartment, previously without name, has been labeled the "submental septum." The posterior boundary of the submental fat compartment is created by a septum that arises from the platysma at a point superficial to the hyoid. Because this area is over the hyoid, it has been named the "suprahyoid septum." The lateral septal boundaries have been labeled the "digastric septae."

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    • "Patients with unwanted submental fat (SMF) are frequently dissatisfied with the appearance of their face and chin [1]. This preplatysmal subcutaneous fat that accumulates in the submental compartment leads to loss of mandibular line definition and a perception of an aging or overweight appearance [2, 3]. "
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    • "These septal boundaries, which act as a retaining system, were henceforth used as the anatomic basis of the fat compartments.16,24 This methodology has since been replicated by additional groups25,26 to identify additional facial fat compartments in cadaveric dissections. "
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