Poly-L-Lactic Acid Threads Versus Platelet-Rich Plasma for Post-Traumatic Atrophic Scars (PLLA-PRP PTAS)
A Comparative Study of Poly-L-Lactic Acid Threads Versus Platelet-Rich Plasma, Both Combined With Subcision, in the Treatment of Post-Traumatic Atrophic Scars
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Post-traumatic atrophic scars result from abnormal healing following skin injury and may cause significant cosmetic and functional impairment. Subcision releases the fibrous bands tethering the scar to deeper tissues and may improve the response to additional treatments. PLLA threads are biodegradable materials that can stimulate collagen production, while PRP contains concentrated platelets and growth factors that may enhance tissue repair and remodeling.
This comparative study was conducted at the Dermatology and Venereology Department, Tanta University Hospital. Patients diagnosed with post-traumatic atrophic scars for at least one year and who had not received treatment during the preceding six months were enrolled. Patients with keloids, immunosuppression, coagulative or thrombophilic disorders, or chronic diseases were excluded.
Participants were divided into two equal treatment groups. Group A received a single session of subcision followed by insertion of poly-L-lactic acid threads. Group B received subcision combined with PRP injection for four sessions at one-month intervals. Clinical photographs were obtained before treatment and three months after treatment. Clinical improvement was assessed by two blinded dermatologists using the Global Aesthetic Improvement Scale, while patient satisfaction and treatment-related complaints or adverse effects were also recorded.
Skin biopsies were obtained from six patients before treatment and three months after treatment and evaluated using hematoxylin and eosin and trichrome staining to assess histopathological changes. All patients were followed for three months.
The study was approved by the Research Ethics Committee of the Faculty of Medicine, Tanta University, with approval number 32889/01/19, and informed consent was obtained from all participants.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Tanta, Egypt
- Tanta University Hospitals
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Patients with post-traumatic atrophic scars. Scar duration of at least 1 year. No treatment received during the previous 6 months.
Exclusion Criteria:
- Keloids Immunosuppression Coagulative disorders Thrombophilic disorders Any chronic diseases
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
|---|---|
|
Active Comparator: subcision and PLLA threads
subcision and PLLA threads' insertion at the same session
|
subcision and PLLA threads' insertion at the same session
|
|
Active Comparator: PRP and subcision (PRP-S) injection
PRP and subcision (PRP-S) injection monthly for four sessions
|
PRP and subcision (PRP-S) injection monthly for four sessions
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Global Aesthetic Improvement Scale (GAIS) score
Time Frame: 3 months after treatment
|
Clinical improvement of post-traumatic atrophic scars was assessed using the Global Aesthetic Improvement Scale by two dermatologists blinded to the treatment group.
The scale was graded from 1 to 4: Grade 1 = mild/no improvement (0-25%), Grade 2 = moderate improvement (26-50%), Grade 3 = marked improvement (51-75%), and Grade 4 = excellent improvement (>75%).
|
3 months after treatment
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- 32889/01/19
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.