Med Lasers  
Successful treatment of depressed facial scars using single monopolar microneedle radiofrequency: case reports
Kyongmin Park1,2, Kihoon Kim3, Sangtae Ahn3
1Department of Medicine, The Graduate School of Hanyang University, Seoul, Republic of Korea
2Melting Clinic Seongsu, Seoul, Republic of Korea
3Reyoung Clinic (Jamsil Branch), Seoul, Republic of Korea
Correspondence to: Sangtae Ahn
E-mail: sang2563@hanmail.net
ORCID: https://orcid.org/0009-0005-9361-7046
Received: July 29, 2024; Accepted: November 8, 2024; Published online: November 19, 2024.
© Korean Society for Laser Medicine and Surgery. All rights reserved.

This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The increasing demand for scar treatments has led to various innovative methods. This paper presents two cases involving the treatment of distinct scar types using a single monopolar microneedle radiofrequency (SMNR) device. The first case involved a 52-year-old male with 2-cm linear depressed facial scar of unknown etiology. The patient underwent two sessions of SMNR spaced two weeks apart and showed scar improvement after four weeks. The second case involved a 35-year-old male presenting with a combination of icepick and boxcar acne scars on both cheeks. He received seven SMNR treatments every two weeks and showed scar improvement after 12 weeks. In both cases, scar improvement was achieved through subcisions of fibrous septa combined with dermal remodeling using microneedle radiofrequency. This case report shows that SMNR is an effective and safe modality for treating various types of scars, including acne scars, with minimal downtime and no significant adverse effects.
Keywords: Wound healing; Acne; Single monopolar microneedle radiofrequency

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