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  • Title: Cementless acetabular fixation in total hip arthroplasty using polyglycolide-lactide screws: an in vivo canine study.
    Author: Yee AJ, Protzner K, Fornasier VL, Binnington AG, Bogoch E, Davey JR.
    Journal: J Arthroplasty; 2000 Jun; 15(4):496-504. PubMed ID: 10884211.
    Abstract:
    Bone ingrowth into cementless acetabular components was evaluated in a canine total hip arthroplasty model, comparing components initially stabilized with polyglycolide-lactide screws with those initially stabilized with titanium screws. The acetabular shell was anchored with 2 polyglycolide-lactide screws in 16 dogs and with 2 titanium screws in 12 dogs. The dogs were followed and sacrificed at 7 weeks, 14 weeks, 10 months, or 15 months. Histomorphometric analysis of bone ingrowth into the weight-bearing dome of the acetabular shell was conducted. No difference was detected in mean bone ingrowth into the acetabular shell comparing the 2 screw groups. The results of this study do not support a significant advantage to the use of biodegradable screws for the initial stabilization of cementless acetabular components in canine total hip arthroplasty.
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