The study of the effect of hyaluronic acid with micro-needling on the thickness of hypertrophic scars and their general condition

Abstract

Background & Aim: The formation of facial scars is considered a next stage of the wound healing process,which occurs when body tissues are exposed to physical damage.These scars are sometimes pathological scars that result from an abnormal response to trauma.

Hypertrophic scars formation  is considered an example of defective scarring and it is elevated from the surface of the adjacent skin and has a heterogeneous thicknesses that disturb the patient both aesthetically and functionally. Due to the important embarrassment that these scars cause to the patient and the doctor, this requires careful and complex treatment for them.

Many treatments have been carried out with the aim of preventing the formation of these scars or treating them after their formation, but the treatment of hypertrophic scars remains a clear challenge, and recurrence rates remain included with all available treatment alternatives.

This study aim to evaluate the role of injected hyaluronic acid within the hypertrophic scar tissue and involved with micro-needling in reducing the thickness of these scars and to study the effect of this treatment on the condition of the scar in general according to the patient^,s opinion on POSAS scale.

Materials and methods : The study evaluates 12 facial hypertrophic scars from 10 patients:

4 males (5 scars) and 6 females (7 scars) aged between 20 and 39. The patients were treated with hyaluronic acid injection in combination with micro-needling  at four stages of healing with intervals of 30 days. Using the patient scar Assessment Scale (POSAS) , each scar has been evaluated from the patients, scale in terms of thickness and general state .

Results : The findings of the study reveal statistical differences at the significance level of 5% between each session. This indicates a reducing in the scale values of the studied variables.

Conclusions : The injection of  hyaluronic acid  and involved with micro-needling leads to a significant improvement in the characteristics of the studied scars.