Concentric wear of the Delrin disc of a Björk-Shiley prosthesis: an uncommon cause of prosthetic incompetence.
Mazzucco
A
A
Morea
P
P
Milano
A
A
Bortolotti
U
U
D000368:Aged; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000209:etiology*; D011475:Prosthesis Failure