THA: Low and high porous fixation methods are equivalent in rotation and translation .
A Randomized Trial Comparing Acetabular Component Fixation of Two Porous Ingrowth Surfaces Using RSA
J Arthroplasty. 2013 Sep;28(8 Suppl):48-5262 patients received either a sintered bead porous surface or a titanium anatomic porous surface shell fixation method in their total hip arthroplasty to determine the radiographic results of each. The results suggest minimal translation and rotation in either group; however, significantly more translation was noticed in the low porosity sinistered bead surgery in the 'Y' axis. Pain scores assessed by the WOMAC and HHS were also higher in the low porosity treatment but these patients experienced superior physical component scores. The results from this study indicate that both implant types are acceptable for use in total hip arthroplasty and provide excellent biological fixation.
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