[Pharmacological treatment of other types of secondary osteoporosis]

This article reviews the treatment strategy for the secondary osteoporosis excluding those caused by diabetes, CKD, endocrine disorders, or glucocorticoid, which proceeding articles deal with. Among numerous possible causes for such secondary osteoporosis, the author has selected osteogenesis imperfecta (OI), osteoporosis associated with gastrectomy or bariatric surgery, inflammatory bowel diseases (IBD), and chronic obstructive pulmonary disease (COPD). For OI, current standard treatment is bisphosphonates (BPs), of which efficacy for fracture inhibition has recently been of issue. Other treatment modalities, e.g. PTH, have just been explored. Osteoporosis associated with gastrectomy, bariatric surgery or IBD, have been treated with vitamin D, calcium, and BPs. Despite high fracture rates, there are almost no treatment data for osteoporosis associated with COPD.