Dataset Information

Rotator Cuff Tendon Adhesion to the Acromial Undersurface: Identification and Management Techniques.

ABSTRACT: Identifying and mobilizing rotator cuff tissue during arthroscopic revision rotator cuff repair can be challenging. A particularly complex situation is encountered when rotator cuff tendons become adhered to surrounding bony structures. Tendon adherence to the undersurface of the acromion may occur after rotator cuff repair, especially when concurrent acromioplasty was carried out during the index procedure. This adhered and retracted rotator cuff tissue may be difficult to both recognize and mobilize, once identified, arthroscopically. The authors present a technique that can aid in both identifying and lateralizing this adhered rotator cuff tissue within the subacromial space.

SUBMITTER: Grahl DK

PROVIDER: S-EPMC6948137 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Rotator Cuff Tendon Adhesion to the Acromial Undersurface: Identification and Management Techniques.

Grahl Daniel K DK Field Larry D LD

Arthroscopy techniques 20190919 10

Identifying and mobilizing rotator cuff tissue during arthroscopic revision rotator cuff repair can be challenging. A particularly complex situation is encountered when rotator cuff tendons become adhered to surrounding bony structures. Tendon adherence to the undersurface of the acromion may occur after rotator cuff repair, especially when concurrent acromioplasty was carried out during the index procedure. This adhered and retracted rotator cuff tissue may be difficult to both recognize and mo ...[more]

PMID: 31921593

Similar Datasets

Project description:The rotator cuff consists of several tendons and muscles that provide stability and force transmission in the shoulder joint. Whereas most rotator cuff tears are amenable to suture repair, the overall success rate of repair is low, and massive tears are prone to re-tear. Extracellular matrix (ECM) patches are used to augment suture repair, but they have limitations. Tissue-engineered approaches provide a promising solution for massive rotator cuff tears. Previous studies have shown that, compared to nonaligned scaffolds, aligned electrospun polymer scaffolds exhibit greater anisotropy and exert a greater tenogenic effect. Nevertheless, achieving rapid cell infiltration through the full thickness of the scaffold is challenging, and scaling to a translationally relevant size may be difficult. Our goal was to evaluate whether a novel method of alignment, combining a multilayered electrospinning technique with a hybrid of several electrospinning alignment techniques, would permit cell infiltration and collagen deposition through the thickness of poly(ε-caprolactone) scaffolds following seeding with human adipose-derived stem cells. Furthermore, we evaluated whether multilayered aligned scaffolds enhanced collagen alignment, tendon-related gene expression, and mechanical properties compared to multilayered nonaligned scaffolds. Both aligned and nonaligned multilayered scaffolds demonstrated cell infiltration and ECM deposition through the full thickness of the scaffold after only 28days of culture. Aligned scaffolds displayed significantly increased expression of tenomodulin compared to nonaligned scaffolds and exhibited aligned collagen fibrils throughout the full thickness, the presence of which may account for the increased yield stress and Young's modulus of cell-seeded aligned scaffolds along the axis of fiber alignment.Statement of significanceRotator cuff tears are an important clinical problem in the shoulder, with over 300,000 surgical repairs performed annually. Re-tear rates may be high, and current methods used to augment surgical repair have limited evidence to support their clinical use due to inadequate initial mechanical properties and slow cellular infiltration. Tissue engineering approaches such as electrospinning have shown similar challenges in previous studies. In this study, a novel technique to align electrospun fibers while using a multilayered approach demonstrated increased mechanical properties and development of aligned collagen through the full thickness of the scaffolds compared to nonaligned multilayered scaffolds, and both types of scaffolds demonstrated rapid cell infiltration through the full thickness of the scaffold.

Dataset Information

Rotator Cuff Tendon Adhesion to the Acromial Undersurface: Identification and Management Techniques.

Publications

Rotator Cuff Tendon Adhesion to the Acromial Undersurface: Identification and Management Techniques.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets