- SMAS
- The superficial musculoaponeurotic system: the fibromuscular layer beneath the skin of the face, continuous with the platysma in the neck. The layer a deep-plane lift repositions.
- Deep plane
- The dissection plane beneath the SMAS. Working here releases the retaining ligaments so skin and SMAS move together as one composite, without tension on the skin.
- Retaining ligaments
- Fibrous anchors from bone or deep fascia to the skin. The zygomatic and mandibular ligaments are osteocutaneous; the masseteric and platysma-auricular ligaments arise from deep fascia. Their release determines how far tissue can be repositioned.
- Lift vector
- The direction along which released tissue is repositioned: vertical, oblique or posterior. One of the clearest signatures of a surgeon’s method.
- Platysma
- The paired thin sheet of muscle running from the fascia over the clavicle up to the mandible and lower face, continuous with the SMAS. Its medial edges are the bands that show with age. Its laxity and banding shape how the neck ages.
- Cervicomental angle
- The angle between the underside of the chin and the front of the neck. The published criterion for a youthful neck is 105 to 120 degrees. Its definition is a primary index of neck rejuvenation.
- Gonial angle
- The angle at the gonion between the posterior border of the ramus and the inferior border of the mandible. Its soft-tissue definition sharpens the jawline.
- Jowl
- Descended tissue gathering along the jawline as the supporting layer loosens with age.
- Tragus
- The small cartilage in front of the ear canal. The posterior reference of the Frankfort horizontal, and the anchor toward which lift vectors are drawn in Method’s plans.
- Frankfort horizontal
- The horizontal reference plane from porion to orbitale, taken on the skin as the line from the tragus to the infraorbital rim, held level for every standardised photograph.
- Documented series
- A surgeon’s consented cases, captured to one standard, with plan and follow-up. The unit Method learns from.
- Case-informed preview
- Method’s term for a visualization: a generated image, not a photograph, interpreting one surgeon’s documented series applied to a new face. Educational, not predictive.
- Facial ageing
- Four processes that a lift addresses unevenly. Descent of soft tissue as the retaining ligaments attenuate. Deflation as the fat compartments lose volume. Skin change: thinning, loss of elasticity, photodamage. Bone resorption at the orbit, the maxilla and the mandible. A lift repositions and tightens; it does not restore volume or skin quality.
- Five layers
- The frame every structure sits in, from the surface down: skin, subcutaneous fat, the SMAS, the retaining ligaments and the spaces between them, and the deep fascia over bone and the muscles of mastication. The facial nerve runs deep to the fourth layer in the lateral face and becomes more superficial as it runs forward.
- Fixed and mobile SMAS
- Behind the platysma-auricular ligament, over the parotid, the SMAS is fixed. In front of it, over the masseter and the cheek, it is mobile. The junction is where every SMAS technique does its work.
- Facial nerve
- The seventh cranial nerve. Its trunk enters the parotid, divides at the pes anserinus, and its five branches (temporal, zygomatic, buccal, marginal mandibular, cervical) leave the gland deep to the parotidomasseteric fascia and the platysma.
- Danger zone
- A region where a nerve runs superficially enough to be injured by dissection: the temporal branch on Pitanguy’s line as it crosses the arch, the great auricular nerve at McKinney’s point on the sternocleidomastoid, the marginal mandibular branch at the mandibular border, the cervical branch below the angle.
- Nasolabial angle
- The angle at subnasale between a tangent to the columella and a tangent to the upper lip. Published norms are about 90 to 95 degrees in men and 95 to 110 in women.
- Facial thirds
- Conventionally trichion to glabella, glabella to subnasale, and subnasale to menton, each about a third. The G–Sn and Sn–Me readouts on the form report the middle and lower thirds as a share of the glabella-to-menton height.
- N–Me
- Anterior facial height: the distance from nasion to menton, the standard vertical dimension in cephalometry.
- Landmarks
- Glabella: the most prominent point of the forehead between the brows. Nasion: the deepest point of the nasal bridge at the root. Pronasale: the tip of the nose. Subnasale: where the columella meets the upper lip. Labrale superius: the midpoint of the upper vermilion border. Pogonion: the most anterior point of the chin. Menton: the lowest point of the chin. Gonion: the angle of the mandible. Tragion: the notch above the tragus.
- Plication, imbrication, SMASectomy
- Three ways of tightening the SMAS without a sub-SMAS flap. Plication folds it on itself and sutures the fold. Imbrication overlaps a cut edge and sutures it. Lateral SMASectomy excises a strip at the fixed-mobile junction and closes the gap. The MACS lift suspends the SMAS with purse-string sutures from the deep temporal fascia.