2024-03-28T12:22:50Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02011321
2023-08-03T05:27:22Z
1642838163960:1642838338003
1642838403551:1642838407795
Humeral head histopathological changes in cuff tear arthropathy
Toma, Takashi
Suenaga, Naoki
Taniguchi, Noboru
Oizumi, Naomi
Yamaguchi, Hiroshi
Tome, Yasunori
Kanaya, Fuminori
Cuff tear arthropathy
humeral head
osteoarthritis
Purpose: The aim of this study was to investigate the histopathological changes in the humeral head in cuff tear arthropathy (CTA) compared with those in glenohumeral osteoarthritis (OA) and humeral neck fracture, which served as non-cuff tear controls.\nMethods: Twenty-three humeral heads extracted at the time of shoulder prosthesis arthroplasty between June 2014 and July 2015 were evaluated in the present study. The diagnoses included four-part humeral neck fracture (n = 4; average age, 85.0 years), glenohumeral OA (n = 4; average age, 71.0 years), and CTA (n = 15; average age, 73.0 years). The humeral heads were evaluated pathologically by hematoxylin and eosin and Safranin-O staining, and the thickness of the articular cartilage was measured.\nResults: Fibrillation, thinning, and tearing of the cartilage were observed in the superior area of the humeral heads in CTA and glenohumeral OA. In CTA cases, clusters of chondrocytes in the cartilage were observed. Moreover, the thickness of the cartilage layer in the middle of the humeral head was 1.54 ± 0.07, 0.32 ± 0.46, and 2.19 ± 0.50 mm in humeral neck fracture, glenohumeral OA, and CTA, respectively. The cartilage layer in CTA was thicker than that in glenohumeral OA (CTA vs. OA: p < 0.05).\nConclusion: OA changes in the superior area of the humeral heads and thickening of the cartilage layer from the middle to the inferior of the humeral heads were confirmed histopathologically, suggesting that simultaneous mechanical and nutritional factors might be contributing to CTA pathogenesis. The current study provided the better understanding of cartilage damage and thickening in CTA. This will help guide treatment options in the setting of CTA.
論文
http://purl.org/coar/resource_type/c_6501
SAGE Publications
2018-12-04
VoR
http://hdl.handle.net/20.500.12000/47566
2309-4990
Journal of Orthopaedic Surgery
1
27
6
1
eng
https://doi.org/10.1177/2309499018816428
https://doi.org/10.1177/2309499018816428
open access
Creative Commons Attribution-NonCommercial 4.0
https://creativecommons.org/licenses/by-nc/4.0/