Performance of Non-Cemented, Hemispherical, Rim-Fit, Hydroxyapatite Coated Acetabular Component

Abstract The purpose of this study was to assess the durability of a non-cemented, hemispherical rim-fit, hydroxyapatite coated cup with a highly cross-linked polyethylene in 223 total hip arthroplasties. At 6-years follow-up (range, 5–9), there were no cup revisions for osteolysis or loosening. Rad...

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Bibliographic Details
Published in:The Journal of arthroplasty 2015-12, Vol.30 (12), p.2233-2236
Main Authors: John, Thomas K., MD, Ghosh, Gaurav, BS, Ranawat, Chitranjan S., MD, Ranawat, Amar S., MD, Meftah, Morteza, MD
Format: Article
Language:English
Subjects:
Acetabulum - surgery
Adult
Aged
Aged, 80 and over
Arthroplasty, Replacement, Hip - instrumentation
Biocompatibility
Biomedical materials
Dislocations
Durability
Durapatite
Failure
Female
Follow-Up Studies
hemispherical
Hip Prosthesis - statistics & numerical data
Humans
Hydroxyapatite
hydroxyapatite coated
Loosening
Male
Middle Aged
non-cemented
Orthopedics
Osseointegration
Polyethylene
Prosthesis Design
Reoperation
Retrospective Studies
rim-fit
Surgical implants
Time Factors
total hip arthroplasty
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Summary:Abstract The purpose of this study was to assess the durability of a non-cemented, hemispherical rim-fit, hydroxyapatite coated cup with a highly cross-linked polyethylene in 223 total hip arthroplasties. At 6-years follow-up (range, 5–9), there were no cup revisions for osteolysis or loosening. Radiologic evidence of osseointegration was based on presence of Stress Induced Reactive Cancellous Bone and radial trabeculae, seen in 47% and 93% of cups, respectively; both were most prevalent in Zone 1. There was no interference demarcation in any zones. Two cups were revised (0.9%): one for dislocation and another for infection. The Kaplan–Meier survivorship for cup revision for any failure (infection, dislocation) was 99% and for mechanical failure (osteolysis, loosening) was 100%. This design has excellent safety, efficacy and durability.
ISSN:0883-5403
1532-8406
DOI:10.1016/j.arth.2015.06.039