Paget's disease.  Common cause of bone weakening.
D050071:Bone Density Conservation Agents / Q000627:therapeutic use; D016723:Bone Remodeling; D004164:Diphosphonates / Q000627:therapeutic use; D006801:Humans; D010001:Osteitis Deformans / Q000150:complications / Q000188:drug therapy / Q000503:physiopathology; D014481:United States
D050071:Bone Density Conservation Agents; D004164:Diphosphonates