Microneedling for Surgical Scar Improvement

Mechanism of Action

Microneedling works through "minimally invasive percutaneous collagen induction," creating controlled micro-injuries that stimulate neovascularization, neocollagenesis, and tissue repair 1
Histological studies show improvements in skin thickness, hydration, and normalization of collagen/elastin matrix in the reticular dermis 2, 3
The collagen produced after microneedling treatment appears in a normal lattice pattern rather than parallel bundles typically seen in scars 3

Microneedling combined with autologous platelet concentrates (APCs) such as PRP (platelet-rich plasma) or PRF (platelet-rich fibrin) is more effective than microneedling alone 4, 5
Studies indicate that PRF may be more effective than PRP when combined with microneedling for scar improvement 5
The application timing of APCs is important - applying PRP or PRF prior to microneedling shows better results than application after the procedure 4
Patient satisfaction is typically higher with combined microneedling and PRP/PRF treatments compared to microneedling alone 6

For optimal results, patients should undergo 3-4 monthly microneedling treatment sessions 1
Treatments should be spaced at least one month apart to allow for proper healing between sessions 1
Maintenance treatments may be recommended every 6 months for continued improvement 5
Needle depth should be adjusted based on the treatment area, typically between 0.25-2.5 mm 2

Microneedling is considered a safe therapy with minimal damage to the skin and shorter downtime (24-48 hours) compared to ablative techniques 2
Ensure proper skin preparation and sterilization to minimize infection risk 2
Patients should avoid sun exposure and heavily scented facial products for 24 hours post-treatment 2