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Subacromial Balloon Spacer for Massive Irreparable Rotator Cuff Tears
Uma Srikumaran1, Raffaella Russo2, Filippo Familiari3
1Division of Shoulder Surgery, Department of Orthopaedic Surgery, Johns Hopkins University, Baltimore, Maryland, U.S.A.
Summary
Massive irreparable rotator cuff tears (MIRCTs) can be treated with a biodegradable subacromial balloon spacer. This implant offers significant shoulder function improvement and patient satisfaction, with comparable results to partial repair surgery.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
Background:
- Massive irreparable rotator cuff tears (MIRCTs) affect 10-40% of patients with rotator cuff issues and are difficult to treat.
- Nonoperative treatments often fail for MIRCTs, necessitating surgical consideration.
Purpose of the Study:
- To evaluate the efficacy and safety of an arthroscopically inserted biodegradable subacromial balloon spacer for treating MIRCTs.
- To compare the outcomes of balloon spacer treatment with arthroscopic partial repair.
Main Methods:
- A prospective multicenter randomized controlled trial involving 93 patients receiving the balloon spacer and 91 patients undergoing arthroscopic partial repair.
- The biodegradable balloon spacer is made of a poly-L-lactide-co-ε-caprolactone copolymer, designed to resorb within 12 months.
Main Results:
- Both the balloon spacer and partial repair groups showed significant and clinically relevant improvements in the American Shoulder and Elbow Surgeons score from baseline up to 2-year follow-up.
- Previous research indicated significant improvements in shoulder function, reduced revision surgery rates, and high patient satisfaction with the balloon spacer at a mean 3-year follow-up.
Conclusions:
- The biodegradable subacromial balloon spacer is an effective treatment option for MIRCTs, demonstrating comparable outcomes to arthroscopic partial repair.
- The implant may provide prolonged benefits by reducing humeral head elevation and subacromial friction, with resorption and fibrous tissue replacement over time.
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