Titanium trilock femoral stem produces less thigh pain than the Cobalt-Chrome stem in THA .
Prospective, randomized comparison of cobalt-chrome and titanium trilock femoral stems
J Arthroplasty. 2009 Sep;24(6):831-6. Epub 2008 Oct 5.388 patients (423 hips) undergoing total hip arthroplasty were randomized to receive a cementless femoral stem with a flat, tapered wedge design either made with cobalt-chrome or titanium. The purpose of this study was to demonstrate the efficacy of flat cementless femoral stem, while comparing two different implant materials. Both flat stem femoral implants produced a significant reduction in pain scores and an increase in hip function when compared to pre-operative measures. The long term follow-up results indicated that patients with titanium stems reported less thigh pain and required fewer secondary operations.
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