IRCT20230809059096N1 IRCT 2024-01-30 Mazandaran University of Medical Sciences Limberg flap repair in wound healing of anal surgery site in Abdominoperineal Resection surgery Comparison of wound complication in anal area between two methods of primary repair and Limburg flap repair in abdominoperineal resection in rectal cancer 2019-07-23 anticipated 50 Complete https://irct.ir/trial/74712 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: We use the block randomization method to randomize subjects into groups that result in equal sample sizes. At the beginning of the randomization process, we randomly choose one of the following blocks by randomly throwing the dice and divide the rest of the samples into 2 groups according to the order of the samples. A: intervention and B: control B A B A 2) B B A A 1) B A A B 4) A B B A 3) A A B B 6) A B A B 5), Blinding description: Based on the classification, people entered and will receive the planned treatment and intervention based on their specific group, and the results are recorded separately and based on coding. Patients and data analyzers are unaware and blinded to it, and only the surgical team is aware of the type of intervention. At the end of the study, the analyst uses the codes of the groups and the coding instructions to access the nature of the groups for analysis and conclusions. 3 Malignant neoplasm of rectum. Intervention group: Flap repair in the anal area using the Limberg flap method. Yes - There is a plan to make this available What will be shared: Only part of the data, such as information about the main outcome or the like, can be shared. When: Start of access period 6 months after printing results To whom: It will be available to researchers working in academic and scientific institutions. Conditions: Use of data to supplement research on anal wound repair using the Limburg flap method Where to obtain: Contact the author of the article responsible for the research project data. Dr mohammad Javad Najafi E-mail: mjnajafi@rocketmail.com How to obtain: Contact the author of the article responsible for the research project data.Specify the type of results requested. Comments: