title: Outlet strut fracture of a Björk-Shiley prosthesis in the mitral position.
mesh_terms: D004868:Equipment Failure; D005260:Female; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve; D008944:Mitral Valve Insufficiency / Q000601:surgery