The olecranon spur and its fracture.
D050723:Fractures, Bone / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013708:Tendon Injuries / Q000000981:diagnostic imaging; D014457:Ulna / Q000000981:diagnostic imaging* / Q000293:injuries*