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Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_11 | Pages 96 - 96
1 Jul 2014
Geurts J Patel A Helmrich U Hirschmann M Müller-Gerbl M Valderrabano V Hügle T
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Summary Statement

Cross-talk between cells from immune and bone system might play a role in molecular regulation of subchondral bone sclerosis in osteoarthritis. Macrophages, B-lymphocytes and tartrate-resistant acid phosphatase activity are specifically increased in sclerotic subchondral bone of patients with knee osteoarthritis.

Background

Recent investigations have provided substantial evidence that distinct molecular and morphological changes in subchondral bone tissue, most notably sclerosis, play an active and important role in the pathogenesis of OA. The cellular and molecular regulation of this pathological process remains poorly understood. Here, we investigated whether osteoimmunology, the reciprocal signaling between cells from the immune and bone system, is involved in OA subchondral bone sclerosis.