Beyond Facial Rejuvenation: Botulinum Toxin-A Injection for Trapezius Contouring [Exclusive Video]

Advancement in science has seen the needle move beyond the face, eyes, brows, forehead and chin to the many different body parts. With the innumerable Botulinum Toxin-A procedures being performed all around the world, Botulinum Toxin-A has since been known to significantly improve many areas of the face and most recently, the body. While mostly used for wrinkles, Botulinum Toxin-A has also been proven, through various studies, to be effective in reducing pain and activities of the muscles. In addition, by relaxing certain muscles, it can indirectly strengthen others, leading to a rise in popularity of Botulinum Toxin-A injections in the calves, chest, abdominals and trapezius.

The primary functions of Botulinum Toxin-A are widely known, and most famously used for the contouring and correction of facial areas. What is probably less known is its ability to potentially slim areas of denser muscle fiber that may lead to disproportions. When overactive, trapezius muscles, especially the upper trapezius, can cause one to appear stout and masculine, but by targeting the right set of muscles with Botulinum Toxin-A, a practitioner can effectively ‘disarm’ these muscles and ensure that they do not send panic signals throughout the body. This thus help to keep the muscles to relax for up to six months, after which it is hoped that the muscle will be able to contract normally without pain or spasms, in turn, potentially reducing the size of muscle mass - indirectly shaping and contouring the trapezius muscle for a more feminine silhouette.

Anatomy of Trapezius Muscle

The trapezius muscle is a flat, thin, triangular superficial muscle which covers the posterior part of the neck and nearly half of the upper back. It is also one of the major muscles of the back and neck responsible for shoulder movement.

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It originates from the central skeletal bones such as the occipital bone superiority and the 12th thoracic vertebra inferiorly and inserts into the scapula and clavicle. Angles occur at the shoulder tips, occipital protuberance, and superior nuchal lines, and the inferior angle occurs along the spine at the twelfth thoracic vertebra.

The spine portion of the accessory nerve is innervated and its sensory branches are derived from the ventral rami of C3 and C4. The accessory nerve descends from the neck into the deep surface of the trapezius muscle, the muscles help to elevate, rotate, adduct, and stabilize the scapula and to extend the neck - with the superior part of the muscle elevates the scapula, the intermediate part reacts to it, and the inferior part depresses it. The trapezius also supports the arms by connecting the skull, neck and vertebrate.

Botulinum Toxin-A for Trapezius Muscle Contouring

A thick and large trapezius muscle can portray a more masculine silhouette, and is often considered to be desirable for body-builders. However, for the general public, especially ladies, a fully developed trapezius can make the neckline shorter, and the shoulder-line less attractive. In some cases, it could also make the face appear larger. Due to this perceived shoulder-neck line proportion, the trapezius muscle also has an effect on the general aesthetics of wearing dresses which exposes the shoulders and neckline.

By injecting Botulinum Toxin-A to the trapezius muscle, a practitioner can help patients decrease the muscle volume of the trapezius muscle, thus reducing the overall muscle size for a slimmer and more defined shoulder line. This in turn helps to improve the perceived shoulder-to-neck and face proportion; delivering a more feminine silhouette.

Over the years, there have been various studies on trapezius muscle injections, with most, if not all, of these studies having yielded significant results. For example, in one study, it is shown that Botulinum Toxin-A injection into the motor end plate region can induce significant paralysis and, by moving the injection away from the target region by just 0.5 cm, paralysis decreased by 50%, proving that the selection of correct injection point is critical and imperative in the Botulinum Toxin-A injection for trapezius muscle procedures.

This week, IFAAS faculty shares exclusive technique on How to Design and Inject Botulinum Toxin-A to Shape and Contour the Trapezius Muscle so that your patients are summer ready!

Hope you have enjoyed the article & video! Stay tuned for our future posts about more techniques and information related to our advanced aesthetic and cosmetic training courses!

Reference:

https://www.semanticscholar.org/paper/Botulinum-toxin-injection-for-contouring-shoulder.-Jeong-Park/c87fbc6b72ee8bb2e33aefa0dc71536f8378ea4c

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