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      Osteoarthritis cartilage histopathology: grading and staging.

      Osteoarthritis and Cartilage

      Animals, Arthroscopy, Biological Markers, Bone Remodeling, Cartilage, Articular, pathology, Cell Division, physiology, Chondrocytes, Disease Models, Animal, Disease Progression, Humans, Hypertrophy, Joints, Osteoarthritis, Reproducibility of Results, Sclerosis, Terminology as Topic

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          Abstract

          Current osteoarthritis (OA) histopathology assessment methods have difficulties in their utility for early disease, as well as their reproducibility and validity. Our objective was to devise a more useful method to assess OA histopathology that would have wide application for clinical and experimental OA assessment and would become recognized as the standard method. An OARSI Working Group deliberated on principles, standards and features for an OA cartilage pathology assessment system. Using current knowledge of the pathophysiology of OA morphologic features, a proposed system was presented at OARSI 2000. Subsequently, this was widely circulated for comments amongst experts in OA pathology. An OA cartilage pathology assessment system based on six grades, which reflect depth of the lesion and four stages reflecting extent of OA over the joint surface was developed. The OARSI cartilage OA histopathology grading system appears consistent and simple to apply. Further studies are required to confirm the system's utility.

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          Journal
          16242352
          10.1016/j.joca.2005.07.014

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