Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Purpose: To investigate the effectiveness of bursal acromial resurfacing (acromiograft) on acromiohumeral distance, subacromial contact area, and pressure in a cadaveric model of massive rotator cuff tear.
Methods: Eight fresh-frozen cadaveric shoulders were tested using a customized shoulder testing system. Humeral head translation, subacromial contact pressure, and the subacromial contact area were evaluated across 4 conditions: (1) intact shoulder; (2) simulated massive rotator cuff tear, (3) 3-mm acromiograft condition, and (4) 6-mm acromiograft condition. The acromiografts were simulated using Teflon and a reported technique. The values were measured at 0°, 20°, and 40° abduction and 0°, 30°, 60°, and 90° external rotation for each abduction status.
Results: Compared with a massive cuff tear, the 6-mm acromiograft significantly reduced the superior translation of the humeral head at all abduction/external rotation angles (P < .05). The 3-mm acromiograft also decreased superior translation of the humeral head compared with massive cuff tear, but not all differences were significant. The 3- and 6-mm acromiografts significantly decreased the subacromial contact pressure and increased the subacromial contact area in almost all positions (P < .05). The 3-mm acromiograft maintained biomechanical properties similar to the intact condition, whereas the 6-mm acromiograft increased the contact area.
Conclusions: This biomechanical study demonstrated that both 3- and 6-mm acromiografts using Teflon in a cadaveric model of a massive cuff tear resulted in recentering of the superiorly migrated humeral head, increased the subacromial contact area, and decreased the subacromial contact pressure. The 3-mm graft was sufficient for achieving the intended therapeutic effects.
Clinical Relevance: The acromiograft can normalize altered biomechanics and may aid in the treatment of massive cuff tears. Because grafting the acromion's undersurface is new with limited clinical outcomes, further observation is crucial. Using a Teflon instead of an acellular dermal matrix allograft for bursal acromial resurfacing could yield different results, requiring careful interpretation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.arthro.2024.06.019 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Greater Return to Sport and Lower Recurrences With the Latarjet Procedure Versus Bankart Repair Without Remplissage in Martial Art Contact Athletes With Glenohumeral Instability and Glenoid Bone Loss Less Than 20.
Arthroscopy
July 2025
Shoulder Unit Department of Orthopedic Surgery, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina.
Purpose: To compare return to sport, functional outcomes, and complications between the arthroscopic Bankart repair without remplissage and the Latarjet procedure in competitive martial arts (MA) athletes with glenohumeral instability.
Methods: Between January 2008 and February 2021, competitive MA athletes with anterior shoulder instability were operated in our institution. The first group of patients were operated on with the arthroscopic isolated Bankart procedure and the other with an open Latarjet procedure.
Biomechanical effects of teres minor trophicity on external rotation following lower trapezius transfer for posterosuperior massive rotator cuff tears.
J Shoulder Elbow Surg
July 2025
Orthopaedic Biomechanics Laboratory, Congress Medical Foundation, Pasadena, CA, USA; Orthopaedic Biomechanics Laboratory, Department of Orthopaedic Surgery, Creighton University School of Medicine, Omaha, NE, USA. Electronic address:
Background: Lower trapezius tendon (LT) transfer has shown promise in managing irreparable posterosuperior massive rotator cuff tears (PSMRCTs) with weakness of active external rotation (ER). However, the influence of teres minor (TM) trophicity on restoring ER strength has not been thoroughly investigated. This cadaveric biomechanical study evaluated the effect of atrophic, normotrophic, and hypertrophic TM on humeral head stability and ER recovery following LT transfer in PSMRCTs.
View Article and Find Full Text PDFComparative biomechanical analysis of combined lower and middle trapezius tendon transfer vs. isolated lower trapezius tendon transfer in irreparable posterosuperior massive rotator cuff tears.
Clin Biomech (Bristol)
August 2025
Orthopaedic Biomechanics Laboratory, Congress Medical Foundation, Pasadena, CA, USA; Orthopaedic Biomechanics Laboratory, Department of Orthopaedic Surgery, Creighton University School of Medicine, USA. Electronic address:
Background: Posterosuperior massive rotator cuff tears remain challenging to manage. While lower trapezius transfer restores posterior cuff function, it lacks the superior cuff's biomechanical role. Middle trapezius tendon transfer has shown efficacy in addressing superior cuff deficiencies with dynamic joint-centering and spacer effects.
View Article and Find Full Text PDFA biomechanical evaluation of rotator cuff footprint contact mechanics after rotator cuff repair with and without the augmentation of a subacromial balloon.
J Shoulder Elbow Surg
July 2025
Roth | McFarlane Hand and Upper Limb Centre, St Joseph's Health Care, London, ON, Canada; Department of Surgery, Western University, London, ON, Canada. Electronic address:
Background: It was the objective of this study to evaluate the contact area and pressure between a repaired rotator cuff tendon and bone for several different rotator cuff repair techniques, with and without a subacromial balloon spacer. It was hypothesized that the contact area and pressure at the rotator cuff footprint would increase with a subacromial balloon spacer following all repair techniques evaluated.
Methods: Ten cadaveric shoulders were mounted onto a biomechanical shoulder simulator.
Superior Fulcrum Reconstruction for Massive Irreparable Rotator Cuff Tears Using the Peroneus Longus Tendon in 2 Variations: A Cadaveric Static Biomechanical Study.
Orthop J Sports Med
July 2025
Department of Orthopedics, The Third Affiliated Hospital of Anhui Medical University (The First People's Hospital of Hefei), Hefei, Anhui, China. K.W. and R.F. contributed equally to this article.
Background: Massive and irreparable rotator cuff tears (MIRCTs) pose unique challenges, and clinicians have explored a variety of surgical approaches to manage them. However, the optimal treatment strategies for MIRCT remain widely debated.
Purpose: To investigate the biomechanical effects of 2 superior fulcrum reconstruction (SFR) techniques-using either 2 halved autologous peroneus longus tendons (SFR-H) in a sutured bridge configuration or a single entire autologous peroneus longus tendon (SFR-E) in an "X" configuration-on MIRCT in a static biomechanical setup.