The Role of Noninvasive and Minimally Invasive Techniques in Open Surgical Interventions for the Purpose of Body Contouring

In his practice, the author has been using noninvasive devices, including Evolve X-radiofrequency-based procedure for tightening of the skin, melting of the subdermal fat deposits and muscle stimulation, all done simultaneously together and truSculpt flex-electrical muscle stimulation. Minimally invasive procedures include BodyTite, FaceTite, and AccuTite, radiofrequency-based procedures for permanent fat destruction and tightening of the skin. Morpheus8 and Morpheus8 Body are radiofrequency based-procedures for tightening of the skin. VASERlipo is an ultrasound-based procedure for liposuction and muscle definition. Vibrational type of liposuction has been used for the purpose of liposuction and muscle definition in combination with VASERlipo.

Safety and Efficacy of Third-Generation Ultrasound-Assisted Liposuction: A Series of 261 Cases

BACKGROUND

The introduction of third-generation ultrasound-assisted liposuction (3rd UAL) allows for a less invasive modality of both deep and superficial lipectomy while offering improved skin retraction and reduced rate of complications. This study examined the efficacy and safety profile of this technology over 15 years of clinical experience.

METHODS

A consecutive series of patients treated from 2005-2020 by the senior author were reviewed for demographic and anthropometric measurements, intraoperative settings, surgical outcomes, and complications via retrospective chart review. Body-Q survey was used to assess patient satisfaction.

RESULTS

A total of 261 patients underwent 3rd UAL in 783 areas. There were 238 female and 23 male patients with an average age of 43.5 years and BMI of 27.4 kg/m². The most frequently treated areas were the trunk and lower limbs. An average of 2840 mL of wetting solution was used with an average of 2284 mL of lipocrit aspirate. About 65% of the cases were done in conjunction with another procedure. Overall complication rate was 4.6%, contour irregularity (1.9%), seroma (0.8%), cellulitis (0.8%), pigmentation changes (0.4%), and electrolyte imbalance (0.4%), with a minimum follow-up of 6 months. 78% of patient would undergo the procedure again and 86% would recommend it.

CONCLUSION

Third-generation ultrasound-assisted liposuction can be used effectively and safely, either alone, or in conjunction with other plastic surgery procedures. VASER liposuction allows surgeons to address superficial fat plane and enhanced skin tightening. Rate of complications are lower than that of traditional liposuction with equivalent or higher patient satisfaction.

LEVEL OF EVIDENCE IV

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

The Effect of Ultrasonic Liposuction Energy Levels on Fat Graft Viability

BACKGROUND

The use of fat obtained from ultrasound-assisted liposuction is popular. However, no study has considered the effect of different energy levels on fat grafts.

OBJECTIVES

We hypothesized that different ultrasonic energy levels could change the fat graft viability.

METHODS

Both flanks of 15 CD1 nude mice (30 experimental areas) were used, with experimental areas randomly distributed into five groups. Using different energy settings, fat grafts were obtained from a patient's abdominoplasty material and applied to the mouse flank regions. Device settings were intermittent mode with 50% vibration amplitude in group 1, continuous mode with 50% vibration amplitude in group 2, intermittent mode with 90% vibration amplitude in group 3, and continuous mode with 90% vibration amplitude in group 4. The control group was grafted with fat obtained via the conventional method. After 6 weeks, all mice were sacrificed, and fat grafts were excised. Sections were stained with hematoxylin-eosin, Masson's trichrome, and anti-perilipin A antibody.

RESULTS

The perilipin A immunostaining result was lowest in group 4, indicating the lowest viable cell count (p < 0.01). There was no significant difference between groups for the other parameters (p > 0.05).

CONCLUSION

High ultrasonic energy may affect fat graft survival. If fat injection is planned, avoiding high energy settings (our recommendation is not to exceed 16 Watts.) should be considered. We also recommend increasing the vibration amplitude rather than switching from intermittent to continuous mode in body parts that are relatively resistant to liposuction.

NO LEVEL ASSIGNED

This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Noninvasive Abdominoplasty

Noninvasive and minimally invasive treatments are increasingly supplanting, or complimenting, abdominoplasty. For optimal delivery of patient care and to maintain a dominant share of the body-contouring market, plastic surgeons need to embrace these new technologies. High capital purchases, costly disposables, maintenance fees, lack of experience, conflicting anecdotal reports, energy-related complications, marketing hyperbole, and rapid obsolescence are formidable barriers to this adoption. Receptive plastic surgeons may be best served by accepting brief short-term retrospective reports by reputable innovative body contouring surgeons who present a succinct and clinically supported message.

Ultrasound-assisted liposuction provides a source for functional adipose-derived stromal cells

BACKGROUND AIMS

Regenerative medicine employs human mesenchymal stromal cells (MSCs) for their multi-lineage plasticity and their pro-regenerative cytokine secretome. Adipose-derived mesenchymal stromal cells (ASCs) are concentrated in fat tissue, and the ease of harvest via liposuction makes them a particularly interesting cell source. However, there are various liposuction methods, and few have been assessed regarding their impact on ASC functionality. Here we study the impact of the two most popular ultrasound-assisted liposuction (UAL) devices currently in clinical use, VASER (Solta Medical) and Lysonix 3000 (Mentor) on ASCs.

METHODS

After lipoaspirate harvest and processing, we sorted for ASCs using fluorescent-assisted cell sorting based on an established surface marker profile (CD34⁺CD31^-CD45^-). ASC yield, viability, osteogenic and adipogenic differentiation capacity and in vivo regenerative performance were assessed.

RESULTS

Both UAL samples demonstrated equivalent ASC yield and viability. VASER UAL ASCs showed higher osteogenic and adipogenic marker expression, but a comparable differentiation capacity was observed. Soft tissue healing and neovascularization were significantly enhanced via both UAL-derived ASCs in vivo, and there was no significant difference between the cell therapy groups.

CONCLUSIONS

Taken together, our data suggest that UAL allows safe and efficient harvesting of the mesenchymal stromal cellular fraction of adipose tissue and that cells harvested via this approach are suitable for cell therapy and tissue engineering applications.