Subject Satisfaction of Wrinkle Reduction Following Treatment with Fractional Radiofrequency: A Prospective Study

November 2022 | Volume 21 | Issue 11 | 1221 | Copyright © November 2022


Published online October 28, 2022

doi:10.36849/JDD.6986

Edward V. Ross MD, Briana Wischnack NP

Scripps Clinic, San Diego, CA

Abstract
Background: Fractional radiofrequency (FRF) technology reduces skin laxity and treats aging-related skin disorders such as wrinkles. The objective of this study was to evaluate participant satisfaction of FRF for the treatment of facial wrinkles.
Methods: A total of 25 male and female patients (average age 60.5 years) were enrolled in this prospective, single center study. Patients received 3 FRF treatments at 3- to 5-week intervals on both sides of the face, using 80-pin (up to 124 millijoule/pin) or the 160-pin tip (up to 62 millijoule/pin) applicator. Follow-up visits were conducted at 6 and 12 weeks after the last treatment. Participant satisfaction was evaluated by individual self-assessment of wrinkle reduction and a patient satisfaction questionnaire. Pain, tolerability, and safety were monitored throughout.
Results: The individual satisfaction was high with participants giving an average satisfaction score of 2.8 ("satisfied") out of 4. Pain was rated "mild" with an average of 4.0 on a 10-point Visual Analog Scale (VAS). Tolerability was rated 3.3 out of 4.0, correlating to "very tolerable." Ninety percent (90%) of subjects reported a mild or moderate improvement in their treatment area at 12-week follow-up.
Conclusion: This study demonstrates that under the FRF pre-sets used, patients are satisfied with results of FRF modality for improvement of their wrinkles. No unanticipated side effects were observed. Treatment was tolerable, and individuals had high levels of satisfaction and tolerability with the results at last follow-up.

J Drugs Dermatol. 2022;21(11):1221-1227. doi:10.36849/JDD.6986

INTRODUCTION

Both intrinsic and extrinsic factors contribute to skin aging; smoking and UV radiation are well-known extrinsic risk factors.1-3 Fine and coarse rhytids, xerosis, sallowness, roughness, loss of tone, and resiliency are all indications of photodamaged skin.4 Atrophic or hyperplastic epidermis, flattened dermo-epidermal junction, decreased cell turnover, upregulated melanocytes, and inflammatory cells are phenotypical features.5,6 The phenotype of the dermis is characterized by fragmented collagen as well as dysfunctional glycosaminoglycans (GAGs) and proteoglycans.7

Minimally invasive procedures are frequently preferred above surgical options for skin aging. Topical retinoids, chemical peels, dermabrasion, microneedling, and ablative and non-ablative lasers are common treatments for aged skin.8 Ablative laser skin resurfacing has produced significant results, but at the expense of undesirable side effects such as pigmentary changes, scarring, infection, and delayed healing. As a result, methods with lower risk profiles were developed.9

Fractional radiofrequency (FRF) has become popular as a next- generation strategy for wrinkle reduction. To achieve dermal effects, electrode pins (that do not "penetrate" the skin) or needles create ablative and coagulative micro-injuries in the epidermis and dermis, interspersed among areas of unaffected skin. This causes a dermal wound healing response, which consequently stimulates fibroblasts. This is supported by higher levels of Type I and Type III procollagen and elastin found in skin biopsy samples following FRF treatment.4,10 The increased collagen volume and elasticity contribute to the improvement of rhytids and wrinkles.

It has been established that FRF can reduce wrinkles.11 However, a patient-centered satisfaction metric is critical for cosmetic treatments, as patients have alternatives when picking a practitioner. Therefore, the objective of this clinical trial was to establish participant satisfaction with FRF for wrinkles in a variety of skin types and both genders.

MATERIALS AND METHODS

Participants
This was a prospective, evaluator-blind study conducted at