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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Critical Reviews™ in Biomedical Engineering
SJR: 0.207 SNIP: 0.376 CiteScore™: 0.79

ISSN Печать: 0278-940X
ISSN Онлайн: 1943-619X

Выпуски:
Том 47, 2019 Том 46, 2018 Том 45, 2017 Том 44, 2016 Том 43, 2015 Том 42, 2014 Том 41, 2013 Том 40, 2012 Том 39, 2011 Том 38, 2010 Том 37, 2009 Том 36, 2008 Том 35, 2007 Том 34, 2006 Том 33, 2005 Том 32, 2004 Том 31, 2003 Том 30, 2002 Том 29, 2001 Том 28, 2000 Том 27, 1999 Том 26, 1998 Том 25, 1997 Том 24, 1996 Том 23, 1995

Critical Reviews™ in Biomedical Engineering

DOI: 10.1615/CritRevBiomedEng.v29.i4.10
pages 373-391

Relationship Among Biomechanical, Biochemical, and Cellular Changes Associated with Osteoarthritis

Frederick H. Silver
Department of Pathology and Laboratory Medicine, UMDNJ-Robert Wood Johnson Medical School, 675 Hoes Lane, Piscataway, NJ 08854
Gino Bradica
Departments of Pathology and Laboratory Medicine and Surgery, UMDNJ-Robert Wood Johnson Medical School, Piscataway, NJ 08854
Alfred Tria
Rutgers Medical School

Краткое описание

Articular cartilage that lines the surface of long bones is a multilayered material. The superficial layer consists of collagen fibrils and chondrocytes that run parallel to the joint surface. In the deeper layers, the collagen fibrils are more randomly arranged and support vertical units termed chondrons containing rows of chondrocytes. In the deepest layers, the collagen fibrils run almost vertically and ultimately insert into the underlying subchondral bone.
Osteoarthritis (OA) is a disease that affects articular cartilage and is characterized by enzymatic and mechanical breakdown of the extracellular matrix, leading to cartilage degeneration, exposure of subchondral bone, pain, and limited joint motion. Changes in mechanical properties of articular car-tilage associated with OA include decreases in modulus and ultimate tensile strength. These changes parallel the changes observed after enzymatic degradation of either collagen or proteoglycans in car-tilage. Results of recent viscoelastic studies on articular cartilage suggest that the elastic modulus of collagen and fibril lengths decrease in OA and are associated with a loss of the superficial zone and a decreased ability of articular cartilage to store elastic energy during locomotion. It is suggested that osteoarthritic changes to cartilage involve enzymatic degradation of matrix components and fibril fragmentation that is promoted by subsequent mechanical loading.


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