ArticleArthroscopy, sports medicine, and rehabilitation2025
Biomechanical Effect of Dermal Allograft or Bone Block Augmentation on Standard Labral Repair in a Time-Zero Cadaveric Model of Glenoid Bone Loss.
Article in Arthroscopy, sports medicine, and rehabilitation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
6 authors.
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Abstract
Purpose: To biomechanically evaluate the stability of a labral repair technique using dermal augmentation (DA) compared with standard labral repair (SLR) and bone block augmentation (BBA) in the context of subcritical glenoid bone loss in a cadaveric model. Methods: Eight cadaveric shoulder specimens were disarticulated and dissected, leaving only labral tissue. The specimens were secured to custom fixtures with 60° of glenohumeral abduction, 30° of external rotation, 20° of scapular anterior tilt, and 40 N of glenohumeral compression. In a repeated-measures design, the specimens were tested in 5 states: native, defect (with 15% glenoid bone loss), SLR, DA, and BBA. Dislocation was performed at 1 N/s over the anterior-inferior rim. Maximum load and distance to dislocation were recorded and statistically analyzed. Results: Maximum loads for the defect state and SLR were significantly less than those for the native state ( Conclusions: Dermal allograft repair showed similar biomechanical characteristics to the native state and showed an increased distance to dislocation and higher forces at dislocation compared with SLR. BBA restored the distance to dislocation and resulted in non-significantly increased maximum loads when compared with the native state. Clinical Relevance: DA of labral repair is an alternative procedure for subcritical glenoid bone loss that potentially mitigates adverse effects from bone grafting. Future clinical investigation is warranted.
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