IRCT20141218020364N10 IRCT 2019-05-17 Shahid Beheshti University of Medical Sciences Silicone Gel Versus Contractubex Gel effect on Scar Silicone Gel Versus Contractubex Gel effect on upper-extremity postsurgical Scars 2018-04-19 anticipated 150 Complete https://irct.ir/trial/39517 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: Simple randomization using drawing sealed envelopes and a computer-based table of randomization, Blinding description: In this double-blind trial study, the participant, investigator and outcomes assessor were not familiar with the groups. we used identify code for each patient and also used unlabeled medication with same box shape for each group. The safety and data monitoring committee was informed about the study groups. 3 Keloid scar. Intervention 1: Intervention group 1: Silicone gel (Kelo-cort™; Advanced Bio-Technologies, Silverdale, WA, USA) Administration of silicone gel ointment on scar from the day of suture removal (ten day), the treatment was applied one time daily, half a fingertip for every 10 cm of wound length (equivalent to one gram of silicone gel), for 4 months. Intervention 2: Intervention group 2: Contractubex™, Merz Pharma, Frankfurt, Germany. Administration of Contractubex gel ointment on scar from the day of suture removal (ten day), the treatment was applied twice daily, half a fingertip for every 10 cm of wound length (equivalent to one gram of gel), for 4 months. Intervention 3: Control group: not-treated. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is It is not yet known if there will be a plan to make this available.