- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03849274
SMART Dressing for Hypertrophic Scar Treatment Post-Total Knee/Hip Arthroplasty
Effectiveness of a Combined Adequate Pressure and Silicone Intervention in Comparison With Conventional Pressure for Hypertrophic Scar Treatment
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Hypertrophic scar (HS) is a challenging yet common complication of dermal injuries such as burns, surgeries, and trauma. It is characterized as a raised, rigid, hyper-vascular, and abnormally pigmented scar confined within the border of the initial injury. The induced aesthetic defect and impaired physical function could adversely affect quality of life.1 Pressure therapy (PT) and silicone therapy are recommended as first-line non-invasive treatments HS.
Recent reviews suggested PT was able to decrease scar height and erythema3,4. The inconclusive outcome results from fact that seldom research address the issue of adequate pressure dosage, which is essential for the treatment effect of PT. It is recommended that an interface pressure of 15-25 mmHg should be given and maintained through a 23 hrs/day wearing regime in order to achieve optimal treatment outcomes5. However, maintaining adequate pressure dosage through pressure garment alone is usually uncomfortable and sometimes impossible, especially over bodily concave area. Therefore, pressure inserts are used in conjunction with pressure garment to increase local pressure6. Despite the documented use of pressure inserts in various journals, pressure garment alone remains the mainstream treatment for hypertrophic scar.
Cochrane review conducted on silicone gel sheet (SGS) revealed SGS's ability in reducing scar thickness and improving scar color, but insufficient data on its effect on scar pliability5. SGS are commonly used to occlude and provide hydration to scar tissues.5, 6 They are mainly used for small scars or surgical scars. They are generally costly and thin in physical form, rendering them incapable of exerting sufficient pressure.
The joint effectiveness of these two treatment modalities in scar management is always drawing the interests from researchers. Various studies reported that enhanced effectiveness could be achieved through the combination of PT and SGS especially in terms of scar pliability, though all subjectively measured6-8. Therefore, there is an urging need to establish the effectiveness of the combination of these two treatments through an RCT.
In order to address the adequate pressure as well as the silicone gel sheeting effect at the same time, a newly invented insert material, the Smart Scar Care Pad (SSCP), is adopted in this study as treatment modality. The Smart Scar Care Pad is especially designed with a rubbery silicone stiffener layer and medical grade silicone gel lining layer underneath. The medical grade silicone gel lining layer underneath serves as the occlusion layer. The rubbery silicone stiffener layer is designed with numerous studs. By cutting the individual studs into gradient height, the Smart Scar Care Pad (SSCP), creates tailor made localized pressure under pressure garment. Studs are also aligned in honey cone style in order to maximize conformability over different bodily contours. In that case, the Smart Scar Care Pad (SSCP) not only increases local pressure but also provides occlusion to HS tissue.
Study Type
Enrollment (Actual)
Phase
- Early Phase 1
Contacts and Locations
Study Locations
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-
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Hong Kong, Hong Kong
- Department of Orthopaedics & Traumatology
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Adult (age over 18 years old) undergoing TKR and THR within 6 weeks;
- Adult who is able to provide written consent, is cooperative and compliant with the treatment and assessment regime;
The Vancouver Scar Scale (VSS) will be used to screen candidates for the study.10 Isolated scars with a total score of 4 or higher and the score of each item equal to or greater than 1 will be included.
Exclusion Criteria:
- The HS area has an open wound or infection, or HS area is local flap or skin graft area;
- The HS area intends to be treated with steroid injections or other interventions (such as traditional Chinese medicine or laser therapy)
- The patients with co-morbidities that might affect their compliance to treatment such as dermatological disorders.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Smart Scar Care Pad+Pressure Garment
For experiment group, subject will be intervened by SSCP plus PG
|
Smart Scar Care Pad (SSCP) + conventional Pressure Garment in the management of HS in adult with total hip replacement (THR) and total knee replacement (TKR)
Conventional Pressure Garment (PG) alone in the management of HS in adult with total hip replacement (THR) and total knee replacement (TKR)
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Active Comparator: Pressure Garment
For control group, subject will be intervened by conventional PG only
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Conventional Pressure Garment (PG) alone in the management of HS in adult with total hip replacement (THR) and total knee replacement (TKR)
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No Intervention: Non-eligible patients (with VSS less than 4)
Non-eligible subjects with VSS less than 4 will be followed up for 6 months and assessment results will be recorded.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Changes from baseline hypertrophic Scar Thickness at 1 months post-surgical to total knee/hip arthroplasty
Time Frame: 1 month post total knee/hip arthroplasty operation
|
Using an ultrasound machine, thickness of scar is aggregately measured to the average of 3 points: the center of the inner ring, 5 mm on both side of the centre point, which reflected the points of circumference of the selected scar sites.
|
1 month post total knee/hip arthroplasty operation
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Changes from baseline hypertrophic Scar Thickness at 3 months post-surgical to total knee/hip arthroplasty
Time Frame: 3 month post total knee/hip arthroplasty operation
|
Using an ultrasound machine, thickness of scar is aggregately measured to the average of 3 points: the center of the inner ring, 5 mm on both side of the centre point, which reflected the points of circumference of the selected scar sites.
|
3 month post total knee/hip arthroplasty operation
|
Changes from baseline hypertrophic Scar Thickness at 6 months post-surgical to total knee/hip arthroplasty
Time Frame: 6 month post total knee/hip arthroplasty operation
|
Using an ultrasound machine, thickness of scar is aggregately measured to the average of 3 points: the center of the inner ring, 5 mm on both side of the centre point, which reflected the points of circumference of the selected scar sites.
|
6 month post total knee/hip arthroplasty operation
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Changes of scar vascularity and pigmentation at 1 month post-surgical to total knee/hip arthroplasty
Time Frame: 1 month post total knee/hip arthroplasty operation
|
Hypertrophic scar vascularity and pigmentation will be measured using the Dermlite Foto II Pro (3GEN Inc., San Juan Capistrano, CA, USA).
|
1 month post total knee/hip arthroplasty operation
|
Changes of scar vascularity and pigmentation at 3 months post-surgical to total knee/hip arthroplasty
Time Frame: 3 months post total knee/hip arthroplasty operation
|
Hypertrophic scar vascularity and pigmentation will be measured using the Dermlite Foto II Pro (3GEN Inc., San Juan Capistrano, CA, USA).
|
3 months post total knee/hip arthroplasty operation
|
Changes of scar vascularity and pigmentation at 6 month post-surgical to total knee/hip arthroplasty
Time Frame: 6 month post total knee/hip arthroplasty operation
|
Hypertrophic scar vascularity and pigmentation will be measured using the Dermlite Foto II Pro (3GEN Inc., San Juan Capistrano, CA, USA).
|
6 month post total knee/hip arthroplasty operation
|
Changes of scar elasticity at 1 month post-surgical to total knee/hip arthroplasty
Time Frame: 1 month post total knee/hip arthroplasty operation
|
Hypertrophic scar elasticity will be measured using the DermaLab Combo (Cortex Technology, Hadsund, Denmark)
|
1 month post total knee/hip arthroplasty operation
|
Changes of scar elasticity at 3 months post-surgical to total knee/hip arthroplasty
Time Frame: 3 months post total knee/hip arthroplasty operation
|
Hypertrophic scar elasticity will be measured using the DermaLab Combo (Cortex Technology, Hadsund, Denmark)
|
3 months post total knee/hip arthroplasty operation
|
Changes of scar elasticity at 6 months post-surgical to total knee/hip arthroplasty
Time Frame: 6 months post total knee/hip arthroplasty operation
|
Hypertrophic scar elasticity will be measured using the DermaLab Combo (Cortex Technology, Hadsund, Denmark)
|
6 months post total knee/hip arthroplasty operation
|
Changes of range of motion (ROM) of knee joint or hip joint at 1 month post-surical to total knee/hip arthroplasty
Time Frame: 1 month post total knee/hip arthroplasty operation
|
It describes the joint movement range.
Physical therapist will manually bend and straighten patients' knee, passively moving legs .
|
1 month post total knee/hip arthroplasty operation
|
Changes of range of motion (ROM) of knee joint or hip joint at 3 months post-surical to total knee/hip arthroplasty
Time Frame: 3 months post total knee/hip arthroplasty operation
|
It describes the joint movement range.
Physical therapist will manually bend and straighten patients' knee, passively moving legs .
|
3 months post total knee/hip arthroplasty operation
|
Changes of range of motion (ROM) of knee joint or hip joint at 6 months post-surical to total knee/hip arthroplasty
Time Frame: 6 months post total knee/hip arthroplasty operation
|
It describes the joint movement range.
Physical therapist will manually bend and straighten patients' knee, passively moving legs .
|
6 months post total knee/hip arthroplasty operation
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Changes of circumference measurement of knee joint or hip joint at 1 month post-surgical to total knee/hip arthroplasty
Time Frame: 1 month post-surgical to total knee/hip arthroplasty
|
It describes the circumference of joint in centimeter units.
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1 month post-surgical to total knee/hip arthroplasty
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Changes of circumference measurement of knee joint or hip joint at 3 months post-surgical to total knee/hip arthroplasty
Time Frame: 3 months post-surgical to total knee/hip arthroplasty
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It describes the circumference of joint in centimeter units.
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3 months post-surgical to total knee/hip arthroplasty
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Changes of circumference measurement of knee joint or hip joint at 6 months post-surgical to total knee/hip arthroplasty
Time Frame: 6 months post-surgical to total knee/hip arthroplasty
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It describes the circumference of joint in centimeter units.
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6 months post-surgical to total knee/hip arthroplasty
|
Changes of pain/itchiness sensation at 1 month post-surgical to total knee/hip arthroplasty
Time Frame: 1 month post-surgical to total knee/hip arthroplasty
|
Numerical rating scale (NRS) will be used to measure itchiness and pain.
Patient are asked to point to the number on the Numeric Rating Scale that best represents the intensity of their pain NOW.
The scale have a scale ranges from 0 to 10, with higher the number considering the worse possible pain/itchiness sensation.
|
1 month post-surgical to total knee/hip arthroplasty
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Changes of pain/itchiness sensation at 3 months post-surgical to total knee/hip arthroplasty
Time Frame: 3 months post-surgical to total knee/hip arthroplasty
|
Numerical rating scale (NRS) will be used to measure itchiness and pain.
Patient are asked to point to the number on the Numeric Rating Scale that best represents the intensity of their pain NOW.
The scale have a scale ranges from 0 to 10, with higher the number considering the worse possible pain/itchiness sensation.
|
3 months post-surgical to total knee/hip arthroplasty
|
Changes of pain/itchiness sensation at 6 months post-surgical to total knee/hip arthroplasty
Time Frame: 6 months post-surgical to total knee/hip arthroplasty
|
Numerical rating scale (NRS) will be used to measure itchiness and pain.
Patient are asked to point to the number on the Numeric Rating Scale that best represents the intensity of their pain NOW.
The scale have a scale ranges from 0 to 10, with higher the number considering the worse possible pain/itchiness sensation.
|
6 months post-surgical to total knee/hip arthroplasty
|
Changes of The 36-Item Short Form Health Survey (SF-36) index at 1 month post-surgical to total knee/hip arthroplasty
Time Frame: 1 month post-surgical to total knee/hip arthroplasty
|
The 36-Item Short Form Health Survey (SF-36) will be used to measure the health related Quality of Life.
The SF-36 has eight scaled scores; the scores are weighted sums of the questions in each section.
Scores range from 0 - 100.
Lower scores = more disability, higher scores = less disability.
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1 month post-surgical to total knee/hip arthroplasty
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Changes of The 36-Item Short Form Health Survey (SF-36) index at 3 months post-surgical to total knee/hip arthroplasty
Time Frame: 3 months post-surgical to total knee/hip arthroplasty
|
The 36-Item Short Form Health Survey (SF-36) will be used to measure the health related Quality of Life.
The SF-36 has eight scaled scores; the scores are weighted sums of the questions in each section.
Scores range from 0 - 100.
Lower scores = more disability, higher scores = less disability.
|
3 months post-surgical to total knee/hip arthroplasty
|
Changes of The 36-Item Short Form Health Survey (SF-36) index at 6 months post-surgical to total knee/hip arthroplasty
Time Frame: 6 months post-surgical to total knee/hip arthroplasty
|
The 36-Item Short Form Health Survey (SF-36) will be used to measure the health related Quality of Life.
The SF-36 has eight scaled scores; the scores are weighted sums of the questions in each section.
Scores range from 0 - 100.
Lower scores = more disability, higher scores = less disability.
|
6 months post-surgical to total knee/hip arthroplasty
|
Changes of treatment satisfaction value at 1 month post-surgical to total knee/hip arthroplasty
Time Frame: 1 month post-surgical to total knee/hip arthroplasty
|
Numerical rating scale (NRS) will be used to measure treatment satisfaction.
Patient are asked to point to the number on the Numeric Rating Scale that best represents the intensity of their pain NOW.
The scale have a scale ranges from 0 to 10, with higher the number considering the better treatment satisfaction.
|
1 month post-surgical to total knee/hip arthroplasty
|
Changes of treatment satisfaction value at 3 months post-surgical to total knee/hip arthroplasty
Time Frame: 3 months post-surgical to total knee/hip arthroplasty
|
Numerical rating scale (NRS) will be used to measure treatment satisfaction.
Patient are asked to point to the number on the Numeric Rating Scale that best represents the intensity of their pain NOW.
The scale have a scale ranges from 0 to 10, with higher the number considering the better treatment satisfaction.
|
3 months post-surgical to total knee/hip arthroplasty
|
Changes of treatment satisfaction value at 6 months post-surgical to total knee/hip arthroplasty
Time Frame: 6 months post-surgical to total knee/hip arthroplasty
|
Numerical rating scale (NRS) will be used to measure treatment satisfaction.
Patient are asked to point to the number on the Numeric Rating Scale that best represents the intensity of their pain NOW.
The scale have a scale ranges from 0 to 10, with higher the number considering the better treatment satisfaction.
|
6 months post-surgical to total knee/hip arthroplasty
|
Collaborators and Investigators
Sponsor
Collaborators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CUHK_2018.487-T
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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