title: Clinical and radiographic outcome of a cementless, titanium, plasma spray-coated total hip arthroplasty femoral component. Justification for continuance of use.
abstract: Between 1984 and 1986, 177 nonconsecutive, primary total hip arthroplasties were performed in 150 patients using the Mallory-Head Porous femoral component (Biomet, Warsaw, IN) inserted without cement. Average time to follow-up evaluation for the entire population (including all early revisions) was 76 months (6.3 years). There were 10 revisions (6%) with an average time to revision of 50 months (4.2 years). Two revisions were for component undersizing; three revisions were for aseptic loosening; four revisions were for acetabular component failure and one revision was due to a femoral fracture secondary to trauma. At the most recent follow-up visit, the average Harris hip score for all hips increased from 41.5 before surgery to 86.8 (P < .001). Radiographic assessments yielded an average Engh fixation score of 20.7. The Kaplan-Meier survival estimate for the average time to follow-up evaluation was 0.98. Based on our patient selection criteria and excellent intermediate clinical and radiographic results, the initial design strategies of the Mallory-Head Porous femoral prosthesis have been confirmed.
authors.affiliation: Joint Implant Surgeons, Columbus, Ohio, USA.
authors.forename: T H
authors.initials: TH
authors.lastname: Mallory
authors.forename: W C
authors.initials: WC
authors.lastname: Head
authors.forename: A V
authors.initials: AV
authors.lastname: Lombardi
authors.forename: R H
authors.initials: RH
authors.lastname: Emerson
authors.forename: R W
authors.initials: RW
authors.lastname: Eberle
authors.forename: M B
authors.initials: MB
authors.lastname: Mitchell
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D005264:Femoral Fractures / Q000209:etiology; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis / Q000534:rehabilitation; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011859:Radiography; D012086:Reoperation; D014025:Titanium
chemical_list: D014025:Titanium