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Capsular Tissues of the Proximal Interphalangeal Joint: Normal Composition and Effects of Dupuytrens Disease and Rheumatoid ArthritisFrom the Department of Anatomy, University of Wales College of Cardiff, and St Lawrence Hospital, Chepstow, UK Correspondence: Dr M. Benjamin, Department of Anatomy, University of Wales College of Cardiff, UK Three fibrocartilages associated with the proximal interphalangeal joint are described—at the attachment of the central slip to bone, within the slip where it passes over the joint, and the volar plate. Material was obtained at surgery following trauma, Dupuytrens disease and rheumatoid arthritis. The fibrocartilages were structurally distinct and immunolabelled differently with monoclonal antibodies to extracellular matrix components. All fibrocartilages from normal and Dupuytrens fingers contained chondroitin and keratan sulphate. Type II collagen was present in all attachment zones, although there was little in rheumatoid fingers. It was also present in the dorsal hood of some normal fingers, but not in pathological specimens or the volar plate. The results show that the fibrocartilages are dynamic tissues whose composition varies according to function and use, and changes in disease.
Journal of Hand Surgery (British and European Volume), Vol. 18, No. 3,
371-376 (1993) |
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