Assessment of Distal Radius Bone Mineral Density in Osteoporosis Patients Receiving Denosumab, Including Those with Rheumatoid Arthritis and Those Receiving Oral Glucocorticoids

Background and Objectives Recently, the osteoporosis treatment has attracted attention, and several drugs have been developed. Among these, bisphosphonates (BPs), parathyroid hormone (PTH) and anti-receptor activator of nuclear factor kappa B ligand (RANKL) monoclonal (MAb) denosumab (DMAb) are the major osteoporosis agents. Several studies demonstrated that the effect of osteoporosis agents is evaluated by lumar or hip dual energy X-ray absorptiometry (DXA). However, private clinic commonly use the radial DXA. On the other hand, rheumatoid arthritis (RA) is sometimes associated with osteoporosis but there is no established treatment approach. In addition, glucocorticoids (GCs) are often used in the treatment of RA and sometimes induce osteoporosis. The present study assessed the effect of DMAb on osteoporosis in patients divided into RA and RA + GC patients by radial DXA. Patients The therapeutic effect of denosumab was assessed in female osteoporosis patients using radial dual-energy X-ray absorptiometry (radial DXA) in three groups: those with postmenopausal osteoporosis (PO group), PO with rheumatoid arthritis (RA group), and PO with RA receiving glucocorticoids (RA + GC group). Methods In total, 427 PO patients 60 years of age or older with a young adult mean value of