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Severe Polyethylene Wear Requiring Revision Total Hip Arthroplasty in Three Dogs
Author(s) -
Nesser Valerie E.,
Kowaleski Michael P.,
Boudrieau Randy J.
Publication year - 2016
Publication title -
veterinary surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 79
eISSN - 1532-950X
pISSN - 0161-3499
DOI - 10.1111/vsu.12492
Subject(s) - medicine , metallosis , surgery , implant , total hip arthroplasty , hip dysplasia , complication , radiography , implant failure
Objective To describe the occurrence of severe polyethylene wear of the acetabular component in 3 dogs that ultimately led to implant failure, and to report the outcome of revision of total hip arthroplasty (THA) in these cases. Study Design Case report Animals Dogs (n=3). Results Three dogs with hip dysplasia underwent routine THA before 2 years of age. All dogs became acutely lame 4–5 years after THA. Radiographs revealed acetabular cup wear in all cases, shell fragmentation in 2 cases, and additional stem failure in 1 case. All dogs underwent successful revision surgery, during which severe polyethylene wear and metallosis was observed. Revision surgery provided an excellent clinical outcome in all dogs from 10 months to 4 years post revision. Conclusion Polyethylene wear and implant failure may be a significant long‐term complication of THA not previously recognized, which may be especially true when placed at an early age in a large breed, active dog, or in a dog with significant morbidity associated with other limbs. A successful revision was achieved in all 3 dogs. Additional investigation is warranted to document the risk factors associated with severe polyethylene wear in canine THA.