Risk factors for accelerated polyethylene wear and osteolysis in ABG I total hip arthroplasty

0399359 - FZÚ 2014 RIV US eng J - Journal Article
Gallo, J. - Havránek, Vítězslav - Zapletová, J.
Risk factors for accelerated polyethylene wear and osteolysis in ABG I total hip arthroplasty.
International Orthopaedics. Roč. 34, č. 1 (2013), 19-26. ISSN 0341-2695. E-ISSN 1432-5195
Grant - others:GA MŠk(CZ) OC 168
Program: OC
Institutional research plan: CEZ:AV0Z10100522
Keywords : risk * factors * accelerated * polyethylene * wear * osteolysis * ABG * total * arthroplasty
Subject RIV: FI - Traumatology, Orthopedics
Impact factor: 2.019, year: 2013

We analysed data from 155 revisions of identical cementless hip prostheses to determine the influence of patient-, implant- and surgery-related factors on the polyethylene wear rate and size of periprosthetic osteolysis (OL). This was calculated by logistic regression analysis. Factors associated with an increased/decreased wear rate included position of the cup relative to Kohler's line, increase in abduction angle of the cup, traumatic and inflammatory arthritis as a primary diagnosis, and patient height. Severe acetabular bone defects were predicted by an increased wear rate (odds ratio, OR = 5.782 for wear rate above 200 mm(3)/y), and increased height of the patient (OR = 0.905 per each centimetre). Predictors of severe bone defects in the femur were the increased wear rate (OR = 3.479 for wear rate above 200 mm(3)/y) and placement of the cup outside of the true acetabulum (OR = 3.292). Variables related to surgical technique were the most predictive of polyethylene wear rate.
Permanent Link: http://hdl.handle.net/11104/0226668