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  • Title: Porous tantalum tibial component prevents periprosthetic loss of bone mineral density after total knee arthroplasty for five years-a matched cohort study.
    Author: Minoda Y, Kobayashi A, Ikebuchi M, Iwaki H, Inori F, Nakamura H.
    Journal: J Arthroplasty; 2013 Dec; 28(10):1760-4. PubMed ID: 23642446.
    Abstract:
    In 21 knees receiving porous tantalum tibial component and 21 knees receiving a cemented cobalt-chromium tibial component, dual x-ray absorptiometry scans were performed for five years post-operatively. The postoperative decrease in the bone mineral density in the lateral aspect of the tibia was significantly less in knees with porous tantalum tibial components (11.6%) than in knees with cemented cobalt-chromium tibial components (29.6%) at five years (p < 0.05). No prosthetic migration or periprosthetic fracture was detected in either group. The present study is one of the studies with the longest follow-up period on bone mineral density after total knee arthroplasty. Porous tantalum tibial component has a favorable effect on the bone mineral density of the proximal tibia after total knee arthroplasty up to five years.
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