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Background  Surgical wounds are covered to prevent bleeding, absorb the exudates, and provide a barrier against external contamination. Currently, in our hospital, after orthopedic surgery, traditional occlusive dressing of sterile gauze and non-woven hypoallergenic adhesive tape is placed. Some of the newest dressings have been shown to reduce the incidence of blisters compared with traditional dressing or colloid adhesive dressings. However, there are no comparative evaluations between the different types of dressings and their contribution to the overall results of the healing process.    Methods/design  This is a randomized, controlled, open-label trial to compare five types of dressings used in total knee and hip arthroplasty surgical wounds. A total of 550 patients will be randomly allocated to one of the following dressings: (1) traditional occlusive dressing, (2) Aquacel Surgical ® , (3) Mepilex ®  Border Post-Op, (4) OpSite Post-Op Visible, or (5) UrgoTul ®  Absorb Border. The dressing assigned is placed right after surgery. Patients will be followed up to 14 days after surgery when the dressing is definitively removed and will be tracked up to 3 months to record any late complications. During the immediate postoperative period and patient hospitalization and at the ambulatory visits after discharge, every time that the dressing is changed, nurses perform the study assessments. The main study outcome will be the percentage of patients with skin integrity at all times when the dressing has been changed. Skin integrity is a composite of the absence of blisters, erosion, erythema, maceration, swelling, wound dehiscence, and purulent exudates. Secondary outcomes include time to first change of dressing; percentage of patients with presence/absence of blisters, erosion, erythema, maceration, swelling, wound dehiscence, and purulent exudates; number of dressing changes needed; days of hospital stay; and nurse and patient satisfaction.  Differences in the main variable between each treatment group and group 1 will be tested by means of a chi-squared test or Fisher’s exact test. Subgroup analyses of diabetic and non-diabetic patients, patients with a body mass index of more than 30 or not more than 30, and type of surgery (hip or knee) are planned.    Discussion  The results of this study will be useful for clinical decision making by giving information on the contribution of the dressings studied to the outcome of the wound and may also show which dressing offers better results depending on the characteristics of patients.    Trial registration  This trial has been registered at ClinicalTrials.gov ( NCT03190447 ). Retrospectively registered on 16 June 2017.    Electronic supplementary material  The online version of this article (10.1186/s13063-018-2755-8) contains supplementary material, which is available to authorized users.

trials

Open-label randomized controlled trial to compare wound dressings for patients undergoing hip and knee arthroplasty: study protocol for a randomized controlled trial