A Post-Market Clinical Investigation on Mepilex Border Post-Op

Study Overview
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Brief Summary
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This is a retrospective, observational (non-interventional), single-arm, single-centre, post-market clinical investigation designed to verify clinical performance and safety of Mepilex Border Post-Op when used according to clinical practice for post-operative wounds in a large and broad population. The clinical investigation will consist of a retrospective medical record review, which will be completed with data from up to 450 female and male adult subjects who were treated with Mepilex Border Post-Op following elective hip or knee replacement at one clinic in Belgium between January 2016 and February 2021.

Detailed Description
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Mepilex Border Post-Op is a CE-marked class IIa medical device developed, manufactured and marketed by Mölnlycke Health Care AB. This is a retrospective, observational (non-interventional), single-arm, single-centre, post-market clinical investigation designed to verify clinical performance and safety of Mepilex Border Post-Op when used according to clinical practice for post-operative wounds in a large and broad population. The overall objective of this investigation is to confirm the clinical performance of Mepilex Border Post-Op for post-operative wounds when used according to clinical practice, by assessing dressing wear time from day of surgery to end of dressing use. The clinical investigation will consist of a retrospective medical record review, which will be completed with data from up to 450 female and male adult subjects who were treated with Mepilex Border Post-Op following elective hip or knee replacement at one clinic in Belgium between January 2016 and February 2021. The data collected for each subject will include those generated in relation to the surgery itself as well as the pre- and post-surgery phases. There is no available data for subjects treated with an alternative to Mepilex Border Post-Op to use as a control group, however, the pre-surgery data will serve as control for some endpoints. The treatment the subjects received at the clinic included pre-surgery visits, the surgery itself, a short in-patient stay following surgery, and post-surgery follow-up visits at approximately 14 days, 1.5 months, 3 months, 6 months, and 1 year. In addition, the subjects used the commercially available mobile health application moveUP Therapy to support their rehabilitation. The subjects' rehabilitation was tracked and aided with moveUP Therapy as it allows (1) subjects to answer a number of questionnaires; (2) subjects to communicate with their surgeon and physical therapist via a chat function in the app; and (3) subject-specific log entries by the surgeon and physical therapist. The data to be used in this retrospective investigation will be extracted exclusively from moveUP Therapy. Eligible subjects/medical records will be identified by site personnel through screening moveUP Therapy. Only data from subjects who have consented to the use of their data related to the surgery in an anonymous way for medical research and scientific publications will be extracted. The investigational device, Mepilex Border Post-Op, was applied as part of the surgery. In the rare event that a dressing change would be required, the subjects were provided with spare dressings and instructions for how to do the change by the treating surgeon or clinic nurse. These instructions included only changing the dressing once at least three corners of the dressing were stained with blood, and to consult the treating surgeon or clinic nurse by sending a moveUP Therapy chat message with a picture of the dressing requesting advice on whether to change or not. Dressing wear time will be derived from up to three sources: how frequently the subjects have answered the question Is the dressing dry? with Yes, it was changed today; review of potential Health Care Professional log entries for evidence of dressing change(s); and review of potential moveUP Therapy chat messages, including photographs, for evidence of dressing change(s). Total number of dressings per subject will be derived from the same information as dressing wear time.

Official Title
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A Retrospective, Observational, Post-Market Clinical Investigation on Safety and Performance of Mepilex Border Post-Op for Post-Operative Wounds

Conditions
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Surgical Wound

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Underwent elective knee or hip surgery between January 2016 and February 2021 at the Medisch Centrum Latem, Belgium. Post-operative wound treated with Mepilex Border Post-Op Documented consent in moveUP Therapy Documented consent at Medisch Centrum Latem during pre-op consultation Exclusion Criteria: 1. Subject missing all answers to the moveUP Therapy question Is the dressing dry?

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 100 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Dressing wear time | Dressing wear time from day of surgery to end of dressing use | From day of surgery to end of dressing use (up to one month) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Total number of dressings per subject | Total number of dressings/subject from day of surgery to end of dressing use | From day of surgery to end of dressing use (up to one month) | 
| Time to dressing strikethrough | Time to dressing strikethrough from day of surgery to end of dressing use | From day of surgery to end of dressing use (up to one month) | 
| Change in physical activity level | Percentage and absolute change in physical activity level (daily step count) pre-surgery to end of dressing use | Pre-surgery to end of dressing use (up to one month) | 
| Change in the EQ-5D | Percentage and absolute change in the EQ-5D results pre-surgery to day 83. | Pre-surgery to day 83 post surgery | 
| Change in KOOS or HOOS pain subscale score | Percentage and absolute change in the KOOS or HOOS pain subscale score pre-surgery to day 42 and day 83 | pre-surgery to day 42 and day 83 post surgery | 
| Change in KOOS or HOOS symptoms subscale score | Percentage and absolute change in the KOOS or HOOS symptoms subscale score pre-surgery to day 42 and day 83 | pre-surgery to day 42 and day 83 post surgery | 
| Change in KOOS or HOOS activities of daily living subscale score | Percentage and absolute change in the KOOS or HOOS activities of daily living subscale score pre-surgery to day 42 and day 83 | pre-surgery to day 42 and day 83 post surgery | 
| Change in KOOS or HOOS sport and recreation function subscale score | Percentage and absolute change in the KOOS or HOOS sport and recreation function subscale score pre-surgery to day 42 and day 83 | pre-surgery to day 42 and day 83 post surgery | 
| Change in KOOS or HOOS joint-related quality of life subscale score | Percentage and absolute change in the KOOS or HOOS joint-related quality of life subscale score pre-surgery to day 42 and day 83 | pre-surgery to day 42 and day 83 post surgery | 
| Dressing showerability | Number of incidences (percentage and absolute) of dressing detachment due to subject showering or using water in other ways for personal hygiene reasons | From day of surgery to end of dressing use (up to one month) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Medical Device, Mepilex Border Post-Op, Knee replacement, Hip replacement, Surgical wound, Dressing, Wear time