Hi tmonkey,
Photos can be deceiving ... so a physical exam will be very important
You look young in your photo, and most likely will still have good skin elasticity. Photographs can be deceiving when it comes to where exactly the fat is located, so a proper physical examination during a consultation would be most beneficial prior to deciding on surgery. What appears to be fat can sometimes be deceiving, and there may actually be some fat under a thin muscle along the front of the neck, which is not accessible with Liposuction. This thin muscle is called the platysma muscle, and plastic surgery of this muscle is called a platysmaplasty.
Liposuction under the chin is a good solo procedure, but ...
I think that if you do have a significant amount of fat under the chin that can be pinched with your finger, then liposuction alone is a real option. One observation that I have made with my older patients in their mid -40's to mid-50's who had liposuction under their chin in their mid-30's to 40's is that they develop muscle cords along the front of their neck earlier. They reported that their necks looked really good for the first several years but they noticed that muscle bands showing soon after. Without the additional thicker layer of fat between the skin and platysma muscle, these muscle bands can show up earlier in patients who have had under chin liposuction. If the fat is left in, the muscle cords may never show up, but the excess fat may become a double chin. So, you would need to pick your poison.
Submentoplasty AKA mini-necklift
A Submentoplasty is a hybrid of liposuction under the chin alone, along with finding and tying together the middle edge of the platysma muscle using the same incision under the chin. The incision for liposuction only may only be 1/8" to 1/4", whereas, the submentoplasty incision is longer, and usually 3/4" to 1"+. This should be enough for the surgeon to first liposuction prior to finding and isolating the platysma muscle edges prior to sewing them together. In its natural state, there are two platysma muscles, a left and right side, with a widening gap between them as it runs down the neck. These exposed edges are what forms the muscle bands as people age. If the platysma muscles are sewn together under the chin then it can form a platform or corset which can support the area under the chin,
I think that increasing the incision from 1/4" to 3/4" at the same time as the liposuction is potentially an ideal time to tie those muscle bands together so that they are less likely to be a problem in the future.
If liposuction is performed alone, then the patient may end up wanting the platysmaplasty to clean up the front of their neck several years after the liposuction. If the patient is older, then the platysmaplasty sewing could be combined with a lower facelift and/or full necklift if the patient also has excess skin.
Skin elasticity of the neck will be important in the decision making
If the patient ends up with a significant amount of excess skin after the neck liposuction and platysmaplasty, then additional incision behind the ears may be necessary to "redrape" or "smooth out" the extra skin, to prevent wrinkling or pleating. Young skin can accomodate or "shrink" some of the excess skin similar to what you may see in weight loss before and after photos. The skin simply shrinks in younger people, and has a nice shape; however, if you pinch that formerly overweight person's skin it may not have as much "snap" or elasticity to their skin as someone who was always thin. In these cases, the additional incision behind the ears to smooth out and trim off the extra skin helps to complete the nice neck result.
Good luck to you.
Best,
Dr. Yang