What is pulmonary hypertrophic osteoarthropathy

For pulmonary hypertrophic osteoarthropathy, mainly showing changes in bone joint deformation, and combined with chronic lung disease. This hypertrophic osteoarthropathy, the cause is not clear, but often combined with lung disease, so it will cause bone joint parts, showing symptoms of ischemia and hypoxia, so it will cause nutritional disorders of bone joint parts. Therefore, it will cause cartilage inside the bone joint, degeneration of cartilage after ischemia and hypoxia, and edema and proliferation of synovial membrane inside the joint, so it will cause obvious pain in the joint. Later, with the development of the disease, cartilage at the joint site shows degeneration, fracture, exfoliation, which will cause obvious osteophyte formation around the bone joint, thus causing deformity of the bone joint site.