An interventional study of Subacromial Bursa Tissue Reimplantation and Arthroscopic Rotator Cuff Repair in Cuff Injury, Rotator, Arthroscopic Surgical Procedures and Stem Cell, sponsored by National and Kapodistrian University of Athens. Not yet recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-05-19.
Sponsored by National and Kapodistrian University of Athens · Not applicable, Interventional, and Treatment
The goal of this observational study is to evaluate the clinical and radiographic outcomes of the biological enhancement of the arthroscopic rotator cuff repair with stem cells from the acromial bursa and PRP in individuals who undergo arthroscopic cuff repair The main question it aims to answer is:
Do the stems cells from the acromial bursa and PRP promote healing and produce better results in arthroscopic cuff repair? Researchers will compare this population to three others the first do bnot receive any biological enchancement, the second receive only stem cells and the third receive only PRP to see if there are any differences.
Inclusion Criteria Adult patients aged ≥18 years. Patients undergoing arthroscopic rotator cuff repair. Patients with a full-thickness, isolated, primary tear of the supraspinatus tendon.
Patients considered eligible for arthroscopic rotator cuff repair using suture anchors.
Ability and willingness to provide written informed consent. Willingness and ability to comply with the study protocol and scheduled follow-up visits.
Exclusion Criteria Partial-thickness rotator cuff tears. Massive or irreparable rotator cuff tears. Revision rotator cuff repair. Concomitant tears of the subscapularis tendon, infraspinatus tendon, long head of the biceps tendon requiring surgical treatment, or glenoid labrum.
Previous surgery on the affected shoulder. Glenohumeral osteoarthritis or advanced cuff tear arthropathy. Active infection or systemic inflammatory disease affecting the shoulder. Use of other biological augmentation techniques during surgery, such as collagen patch, stem cells, bone marrow aspirate concentrate, or other scaffold-based augmentation.
Inability to provide informed consent. Inability or unwillingness to comply with the postoperative rehabilitation protocol or follow-up schedule.
(MSCs + PRP): 1 ml of a mixture of subacromial bursa and 3 ml of PRP will be placed in the bone-tendon junction after completion of the arthroscopic suturing
Biological: Subacromial Bursa Tissue Reimplantation · Procedure: Arthroscopic Rotator Cuff Repair · Biological: Platelet-Rich Plasma (PRP) Injections
1 ml of a mixture of subacromial bursal tissue fragments without PRP will be placed at the bone-tendon junction immediately after completion of the arthroscopic repair.
Biological: Subacromial Bursa Tissue Reimplantation · Procedure: Arthroscopic Rotator Cuff Repair
3 ml of PRP will be placed at the bone-tendon junction immediately after completion of the arthroscopic repair.
Procedure: Arthroscopic Rotator Cuff Repair · Biological: Platelet-Rich Plasma (PRP) Injections
3 ml of saline will be placed at the bone-tendon junction immediately after completion of the arthroscopic repair.
Procedure: Arthroscopic Rotator Cuff Repair · Other: Normal Saline (0.9% NaCl)
Autologous minced subacromial bursal tissue harvested arthroscopically using a tissue collection device and applied at the bone-tendon interface immediately after rotator cuff repair.
Standard arthroscopic repair of full-thickness isolated supraspinatus tendon tears using suture anchors.
Autologous platelet-rich plasma prepared from preoperatively collected peripheral blood and applied at the bone-tendon interface immediately after repair completion.
Three milliliters of sterile normal saline applied at the bone-tendon interface immediately after arthroscopic rotator cuff repair as placebo comparator.
Functional Outcome Assessed by Constant-Murley Score and ASES Score
The primary outcome measure will be the functional outcome of the shoulder assessed using the Constant-Murley Score and the American Shoulder and Elbow Surgeons (ASES) score at 3, 6, and 12 months postoperatively. Both scores are validated instruments evaluating pain, daily activities, and shoulder function, with higher scores indicating better clinical outcomes.
Time frame: The primary outcome measure will be the functional outcome of the shoulder assessed using the Constant-Murley Score and the American Shoulder and Elbow Surgeons (ASES) score at 3, 6, and 12 months postoperatively. Both scores are validated instruments ev
Rotator Cuff Tendon Integrity Assessed by MRI (Sugaya Classification)
Tendon integrity will be evaluated using magnetic resonance imaging (MRI) at 12 months postoperatively. Repair integrity will be classified according to the Sugaya classification system and categorized to assess healing or re-tear.
Time frame: 12 months postoperatively
Pain Intensity Assessed by Numeric Rating Scale (NRS)
Postoperative pain will be assessed using the Numeric Rating Scale (NRS), ranging from 0 (no pain) to 10 (worst imaginable pain), at 3, 6, and 12 months postoperatively.
Time frame: 3, 6, and 12 months postoperatively
Health-Related Quality of Life Assessed by SF-12
Quality of life will be evaluated using the 12-Item Short Form Health Survey (SF-12) at 3, 6, and 12 months postoperatively. The questionnaire provides physical and mental health composite scores.
Time frame: 3, 6, and 12 months postoperatively
Patient Satisfaction
Patient satisfaction will be assessed using a Numeric Rating Scale from 0 to 10 at 3, 6, and 12 months postoperatively, with higher scores indicating greater satisfaction.
Time frame: 3, 6, and 12 months postoperatively
Postoperative Complications and Retear Rate
All postoperative complications and symptomatic retears will be recorded throughout the follow-up period.
Time frame: Up to 12 months postoperatively
No study locations are listed for this record.
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National and Kapodistrian University of Athens