title: Ingrowth surfaces. Plasma spray coating to titanium alloy hip replacements.
abstract: Plasma spray coatings on titanium alloy total hip replacements (THRs) provide a viable alternative to sintered bead or diffusion-bonded fiber metal ingrowth surfaces. The plasma spray process enables the titanium alloy implant to retain 90% of its fatigue strength, as opposed to less than 50% for sintered or diffusion-bonded cementless devices. Laboratory and clinical evidence suggest that plasma spray cementless THRs perform as well, if not better, than other cementless implants. Clinical trials have demonstrated the superiority of a plasma spray cementless THR (Mallory-Head) over a sintered bead cementless THR (PCA) and the equivalent results to a cemented THR. Plasma spray coatings on titanium alloy hip replacements provide a safe, predictable coating for cementless fixation of THRs in the short to medium range of follow-up periods.
authors.affiliation: University Hospital, University of Western Ontario, London, Canada.
authors.forename: R B
authors.initials: RB
authors.lastname: Bourne
authors.forename: C H
authors.initials: CH
authors.lastname: Rorabeck
authors.forename: B C
authors.initials: BC
authors.lastname: Burkart
authors.forename: P G
authors.initials: PG
authors.lastname: Kirk
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000497:Alloys; D005260:Female; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D010146:Pain; D011446:Prospective Studies; D011474:Prosthesis Design; D011859:Radiography; D012189:Retrospective Studies; D013718:Tensile Strength; D014025:Titanium
chemical_list: D000497:Alloys; D014025:Titanium