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Journal of Arthroplasty, ISSN: 0883-5403, Vol: 22, Issue: 5, Page: 689 -691
Hip
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Periprosthetic Changes in Bone Mineral Density in 5 Stem Designs 5 Years After Cemented Total Hip Arthroplasty. No Relation to Stem Migration
Li, Ming G; Rohrl, Stephan M; Wood, David J; Nivbrant, BoHip
Changes in bone mineral density (BMD) at the proximal femur were evaluated in 83 cemented total hip arthroplasties (THAs) 5 years after surgery. The BMD changes were compared among 5 stem designs and were related to the stem migration. A greater BMD decrease was found in Scientific Hip Prosthesis (Biomet, Bridgend, UK) and SPII CoCr stems (Link, Hamburg, Germany) than in Exeter (Howmedica, London, UK), Spectron (Smith & Nephew, Memphis, Tenn), and SPII Titanium stems (P < .05), and the stiffer SPII CoCr stems (Link) had a larger bone loss than the SPII Titanium stems (Link). However, no overall relationship was found between the BMD changes and stem migration or stem stiffness.
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