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Treatment of Depressed Scars Using Needle-Based Scar Release and String-Shaped Dermal Fat Grafting
Eri Hirai1, Takashi Oguma1, Kurumi Buma1
1Department of Plastic and Reconstructive Surgery, Kobe City Nishi-Kobe Medical Center, Hyogo, Japan.
Journal of Plastic and Reconstructive Surgery
|April 8, 2026
Summary
Dermal fat grafting effectively treats depressed facial scars without visible incisions. This non-incisional technique uses string-shaped grafts to improve scar appearance and requires minimal equipment for excellent aesthetic outcomes.
Area of Science:
- Plastic Surgery
- Dermatology
- Regenerative Medicine
Background:
- Depressed scars can result from subcutaneous fat damage following facial trauma.
- Non-incisional approaches are preferred for facial scars without surface visibility.
- Aesthetic concerns often drive the need for effective scar treatment.

