Clinical and radiographic outcome of a cementless, titanium, plasma spray-coated total hip arthroplasty femoral component. Justification for continuance of use

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...

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Bibliographic Details
Published in:The Journal of arthroplasty 1996-09, Vol.11 (6), p.653-660
Main Authors: Mallory, T H, Head, W C, Lombardi, Jr, A V, Emerson, Jr, R H, Eberle, R W, Mitchell, M B
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Female
Femoral Fractures - etiology
Follow-Up Studies
Hip Joint - diagnostic imaging
Hip Prosthesis - rehabilitation
Humans
Male
Middle Aged
Prosthesis Design
Radiography
Reoperation
Titanium
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Summary: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.
ISSN:0883-5403
DOI:10.1016/s0883-5403(96)80002-7