Dynamic trial fitting by an expanding trial cup does not jeopardize primary acetabular component stability

Trial fitting of the acetabular component in uncemented total hip replacement is traditionally done by trial cups. Since trial cups do not resemble the real press-fit obtained by the definitive cup, a dynamic trial inserter, called the X-pander ®, was developed to mimic the real amount of press-fit. However, the concern is raised of losing the initial press-fit by using the X-pander® due to pre-expansion of the acetabulum. The purpose of this study was to assess if there is a difference in primary stability between both methods.
Source: Clinical Biomechanics - Category: Orthopaedics Authors: Source Type: research
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