title: Metal-UHWMPE (Ultra High Molecular Weight Polyethylene) wear: experimental testing.
abstract: Testing conducted on a hip joint simulator verified the Charnley hypothesis that the diameter of the prosthetic head is proportional to wear. The study was conducted by pairing heads in Ortinox TM with acetabular cups in polyethylene at high molecular weight (UHMWPE). A comparison between the different sizes of the heads (26 and 30 mm in diameter) showed a different trend in the wear rate; in particular, the head with a smaller diameter behaves better tribologically than the head with a larger diameter.
authors.affiliation: Laboratorio di Tecnologia dei Materiali, Istituti Ortopedici Rizzoli, Bologna.
authors.forename: S
authors.initials: S
authors.lastname: Affatato
authors.forename: S
authors.initials: S
authors.lastname: Terzi
authors.forename: D
authors.initials: D
authors.lastname: Nardi
authors.forename: A
authors.initials: A
authors.lastname: Toni
authors.forename: R
authors.initials: R
authors.lastname: Cianci
mesh_terms: D000077:Acetabulum; D005270:Femur Head; D006622:Hip Prosthesis / Q000592:standards*; D006801:Humans; D008670:Metals; D008970:Molecular Weight; D011474:Prosthesis Design; D012106:Research
chemical_list: D008670:Metals