Article

Femoral component revision using an extensively hydroxyapatite-coated stem.

University of Louisville School of Medicnine, Kentucky 40292, USA.
The Journal of Arthroplasty (impact factor: 2.38). 02/2004; 19(1):8-13. pp.8-13
Source: PubMed

ABSTRACT Femoral component revisions with extensively coated stems have shown promising clinical results, although concerns over stress shielding still exist. We retrospectively reviewed 59 patients undergoing femoral component revision with an extensively hydroxyapatite (HA)-coated stem. The average length of follow-up was 3.3 years (range, 2-5 years). The average preoperative Harris Hip Score was 43 points, which improved to 86 points at the latest follow-up (P < .01). The overall mechanical failure rate was 2%. No evidence of stress shielding was seen in 78% of patients. The clinical results of this series using an extensively HA-coated stem are similar to those using an extensively porous-coated stem. Long-term follow-up is required to determine if an extensively HA-coated implant will be superior to an extensively porous-coated implant with regard to stress shielding.

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Keywords

59 patients undergoing femoral component
 
86 points
 
average length
 
average preoperative Harris Hip Score
 
concerns
 
extensively HA-coated implant
 
extensively porous-coated implant
 
Femoral component revisions
 
mechanical failure rate
 

Charles H Crawford