The SCAR (Scar Cosmesis Assessment and Rating) scale: development and validation of a new outcome measure for postoperative scar assessment.
J Kantor
https://pubmed.ncbi.nlm.nih.gov/27292082/Actively Recruiting
Led by Melissa Pugliano-Mauro · Updated on 2025-08-14
30
Participants Needed
1
Research Sites
4 weeks
Total Duration
This research investigates the healing and appearance of surgical scars on non-scalp skin closed in a straight line with a scar length of at least 4.5 cm. The study compares the effects of two ointments, zinc oxide and petrolatum, applied to different halves of each scar. This early phase 1 trial aims to evaluate scar outcomes using a validated scar assessment scale and to explore potential differences in wound healing and scar appearance between these two common skin treatments. Participants will have their surgical scars marked and divided into two halves one side will receive zinc oxide ointment and the other petrolatum. Patients will apply the assigned ointments daily for one month while maintaining a log of their applications. Follow-up visits will occur at 1 week, 4 weeks, 8 weeks, and 6 months after surgery, during which the scars will be photographed and assessed by both the patients and trained dermatologists using the Patient and Observer Scar Assessment Scale POSAS. The study also monitors for post-operative infections and measures the proportion of the wound that has sealed at various time points. During the study, participants will attend scheduled visits for suture removal, scar evaluation, and photographic documentation. Patients will complete questionnaires about their scar appearance at each visit. The study tracks adherence to ointment application through patient logs. Safety assessments include checking for surgical site infections and complications. Participants who complete all visits will receive a gift bag with skin care products. The total study duration per participant includes follow-up assessments up to six months post-surgery, with options for remote photo submissions if the final visit cannot be attended in person.
CONDITIONS
Zinc Oxide Versus Petrolatum Following Skin Surgery
L
Lauren Crow, MD
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Melissa Pugliano-Mauro
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Zinc Oxide Ointment (applied daily to one scar half) | Petrolatum Ointment (applied daily to other scar half) |
|---|---|---|
| What it is | A topical ointment containing zinc oxide, applied to one half of the surgical incision daily for one month after surgery. | A topical petrolatum ointment, applied to the opposite half of the surgical incision daily for one month after surgery. |
| Role in this trial | One of two post-surgical dressings tested in each participant to assess wound healing and scar appearance. | The comparator post-surgical dressing used on the other half of each surgical wound, matched to zinc oxide. |
| Primary use | Used to promote post-surgical wound healing and reduce scar-related complications when applied to surgical incisions. | Applied as a common wound dressing to help incisions heal and minimize scar tissue development after surgery. |
| How it is given or performed | Each participant applies zinc oxide ointment once daily to the assigned half of the linear incision for one month, immediately following surgery. | Petrolatum ointment is applied once daily to the contralateral half of the incision by the participant, following the same schedule for one month. |
| Evidence status | Previous studies have explored zinc oxide dressings for wound healing, though findings in post-surgical scars, especially outside the leg, remain limited. Published trial-level evidence exists for its use in post-excision wounds on the leg. | Petrolatum ointment is well established as a standard wound dressing after surgery, with published evidence and widespread clinical use supporting its effectiveness for wound healing and scar care. |
| Important limitations | Zinc oxide’s effectiveness and safety for post-surgical scars outside the leg remain uncertain. The study focuses on short-term cosmetic and healing outcomes; risks of rare allergic reactions may not be fully assessed. | While petrolatum is widely used, its effect on scar outcome compared with other advanced dressings may vary. Some rare sensitivities are possible. |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
You may qualify if you...
You will not qualify if you...
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person) for consent and enrollment at time of surgical closure
Duration - 1 month
Participants apply zinc oxide ointment to one half of their post-surgical linear scar and petrolatum ointment to the other half daily, along with daily dressing changes, for one month following surgery.
1 visit at 7 days post-op for suture removal and dressing removal; daily self-application and dressing changes at home
Duration - 6 months
Participants return for scar assessment visits where photographs are taken and scar appearance is evaluated using the POSAS scale at 4 weeks, 8 weeks, and 6 months post-operatively. Electronic photo submissions may be used if unable to attend final visit.
3 visits (in-person) at 4 weeks, 8 weeks, and 6 months post-op
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
TREATMENT
Number of Arms
1
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J Kantor
https://pubmed.ncbi.nlm.nih.gov/27292082/Carol B Thompson, Timothy L Wiemken, Timothy S Brown
https://pubmed.ncbi.nlm.nih.gov/28654576/Melissa Pugliano-Mauro
Lead Sponsor