Microfracture Combined With Suture Bridge Technique Versus Greenhouse Technique in Treating of Rotator Cuff Injuries

Study Overview
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Brief Summary
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Several biological augmentation procedures have recently been suggested to enhance tendon healing after Arthroscopic rotator cuff repair, such as marrow-stimulating technique with microfractures of the greater tuberosity. The purpose of this study was to introduce a new technique, greenhouse technique, and to compare the clinical outcomes with microfracture combined with suture bridge technique.

Detailed Description
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Arthroscopic rotator cuff repair has a high rate of successful subjective and functional results. Although the rate of tendon healing is reported to be around 80% for small tears, it can decrease to about 30% for large and massive tears. Poor tissue quality of bone, tendons, and muscles can affect healing and functional recovery of the rotator cuff and has been advocated as a major cause of tendon nonhealing and/or retear. Several biological augmentation procedures have recently been suggested to enhance tendon healing after Arthroscopic rotator cuff repair, such as marrow-stimulating technique with microfractures of the greater tuberosity. The purpose of this study was to introduce a new technique, greenhouse technique, and to compare the clinical outcomes with microfracture combined with suture bridge technique.

Official Title
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Microfracture Combined With Suture Bridge Technique Versus Greenhouse Technique in the Treatment of Medium-sized Full-thickness Rotator Cuff Injuries: A Prospective Randomized Controlled Study

Conditions
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Rotator Cuff Tears, Microfractures

Intervention / Treatment
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* Procedure: Greenhouse Technique
* Procedure: Microfracture Combined With Suture Bridge Technique


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Medium-sized full-thickness rotator cuff tear confirmed during shoulder arthroscopy Between 20-65 years old Exclusion Criteria: Bilateral rotator cuff tear Underwent ipsilateral surgery Large-to-massive rotator cuff tear Combined with Bankart, SLAP or AC lesion Combined with diabetes, smoking, immune disease, osteoporosis, and large nodular cystic degeneration

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 65 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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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Greenhouse group<br>Patients underwent greenhouse technique：The high-strength suture was passed through the tendon using Mason-Allen method, and then Crimson duvet procedure was performed on the foot print area from the articular surface of the humeral head to the apex of the greater tubercle. Immediately after this procedure, a lateral row anchor was used. | Procedure: Greenhouse Technique<br>* First, the high-strength sutures were passed through the teared tendon, and then Crimson duvet procedure was performed on the footprint from the articular margin of the humeral head to the apex of the greater tubercle, followed by a lateral row anchor.<br>|
| Active Comparator: Vent group<br>The three-line anchor suture method is the same as before, the position is between the apex of the greater tubercle and the articular surface. After the rotator cuff is sutured, the bone bed beyond the suture point to the outer edge of the greater tubercle is opened with 2.0mm Kirschner wire every 5mm ( Crimson duvet), 1cm in depth, about 6 in total. | Procedure: Microfracture Combined With Suture Bridge Technique<br>* A three-line anchor suture method is used as in the greenhouse technique, except that the position is between the apex of the greater tubercle and the articular surface. After the rotator cuff is sutured, the bone bed beyond the suture point to the outer edge of the greater tubercle is opened with 2.0mm Kirschner wire every 5mm ( Crimson duvet), 1cm in depth, about 6 in total.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| American Shoulder and Elbow Surgeons Shoulder (ASES) score | A patient-reported outcome uesed to assess the shoulder function,range 0-100, higher scores mean a better outcome | 1 year postoperatively | 
| American Shoulder and Elbow Surgeons Shoulder (ASES) score | A patient-reported outcome uesed to assess the shoulder function,range 0-100, higher scores mean a better outcome | 2 years postoperatively | 
| tendon integrity | MRI was used to assess the integrity of the repaired rotator cuff tendon | 1 year postoperatively | 
| Visual Analogue Scale(VAS) | A patient-reported outcome uesed to assess pain severityrange 0-10, higher scores mean a worse outcome | 1 year postoperatively | 
| Visual Analogue Scale(VAS) | A patient-reported outcome uesed to assess pain severityrange 0-10, higher scores mean a worse outcome | 2 year postoperatively | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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rotator cuff tear, Microfractures, greenhouse, Suture Bridge Technique