Outcomes of long tapered hydroxyapatite-coated stems in revision total hip arthroplasty.
The purpose of this study was to evaluate the outcome of femoral component revisions using a long tapered HA coated femoral revision stem. Between 2001 and 2008, 55 femoral component revisions were performed using this stem. Forty-one patients were available for follow up evaluation at average of 59 months. The clinical results were evaluated using the HHS and serial radiographs were evaluated for loosening. The mean HHS was 71 (range 22-100). Three hips required revision of KAR stem (1 aseptic loosening, 1 infection, 1 limb length discrepancy). Only one prosthesis demonstrated radiographic evidence of subsidence. Our study suggests that long tapered HA coated revision femoral components can provide stable fixation and in-growth in cases where there is good proximal femoral bone stock and favorable canal geometry.
University of Pennsylvania, Philadelphia, Pennsylvania.
Amun
A
Makani
University of Pennsylvania, Philadelphia, Pennsylvania.
Tae Won B
TW
Kim
University of Pennsylvania, Philadelphia, Pennsylvania.
Atul F
AF
Kamath
Pennsylvania Orthopedic Center, Malvern, Pennsylvania.
Jonathan P
JP
Garino
University of Pennsylvania, Philadelphia, Pennsylvania.
Gwo-Chin
GC
Lee
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D020099:Coated Materials, Biocompatible; D017886:Durapatite; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation
D020099:Coated Materials, Biocompatible; D017886:Durapatite
KAR stem; long tapered hydroxyapatite coated stems; revision hip arthroplasty