CC2023: Subacromial Balloon Spacer Implantation for Massive Irreparable Rotator Cuff Tears Is Associated With Restoration of the Acromiohumeral Interval and Glenohumeral Center of Pressure: A Systematic Review and Meta-Analysis of Controlled Laboratory Studies (December 2023)-Subacromial Balloon Spacer Implantation for Massive Irreparable Rotator Cuff Tears Is Associated With Restoration of the Acromiohumeral Interval and Glenohumeral Center of Pressure: A Systematic Review and Meta-Analysis of Controlled Laboratory Studies

Subacromial Balloon Spacer Implantation for Massive Irreparable Rotator Cuff Tears Is Associated With Restoration of the Acromiohumeral Interval and Glenohumeral Center of Pressure: A Systematic Review and Meta-Analysis of Controlled Laboratory Studies

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The document presents a systematic review and meta-analysis of controlled laboratory studies investigating the use of biodegradable subacromial balloon spacers (SBSs) for massive irreparable rotator cuff tears. The study aimed to analyze the biomechanical effects of SBS implantation in cadaveric models. The findings suggest that SBS implantation resulted in significant improvements in humeral head position at various shoulder abduction angles. The SBS also improved glenohumeral and subacromial contact pressures, potentially enhancing deltoid load, abduction forces, and restoring glenohumeral biomechanics. Additionally, a higher balloon fill volume may lead to abnormal humeral head translation, emphasizing the importance of optimal filling volume. Some limitations of the study include variations in tear creation methods, potential clinical vs. biomechanical disparities, and conflicting clinical outcomes in current literature regarding SBS usage. Further high-quality research is recommended to better understand the efficacy and indications for SBSs in the treatment of massive irreparable rotator cuff tears.

Keywords

biodegradable subacromial balloon spacers

SBS

massive irreparable rotator cuff tears

biomechanical effects

cadaveric models

humeral head position

glenohumeral contact pressures

deltoid load

abduction forces

glenohumeral biomechanics