Contribution of Circulatory Disturbances in Subchondral Bone to the Pathophysiology of Osteoarthritis

作者：Aaron Roy K^*; Racine Jennifer; Dyke Jonathan P

来源：Current Rheumatology Reports, 2017, 19(8): 49.

DOI：10.1007/s11926-017-0660-x

• Bone circulation
• Osteoarthritis
• Venous stasis
• Dynamic imaging
• Crosstalk
• Hypoxia

Purpose of Review This review describes the contributions of abnormal bone circulation to the pathophysiology of osteoarthritis. Combining dynamic imaging with MRI and PET with previous observations reveals that venous stasis and a venous outlet syndrome is most likely the key circulatory pathology associated with the initiation or progression of osteoarthritis.
Recent Findings MRI and PET have revealed that venous outflow obstruction results in physicochemical changes in subchondral bone to which osteoblasts are responsive. The osteoblasts express an altered pattern of cytokines, many of which can serve as structural or signaling molecules contributing to both bone remodeling and cartilage degeneration.
Summary The patterns of circulatory changes are associated with alterations in the physicochemical environment of subchondral bone, including hypoxia. Osteoblast cytokines can transit the subchondral bone plate and calcified cartilage and communicate with chondrocytes.

• 出版日期2017-8