Restoring femoral offset is the most important technical factor in preventing total hip arthroplasty dislocation

Abstract

<div class="section"> <a class="named-anchor" id="d7449238e178"> <!-- named anchor --> </a> <h5 class="section-title" id="d7449238e179">Purpose</h5> <p id="d7449238e181">Our aim was to determine if acetabular component position, femoral offset restoration, or leg-length equality is most important for total hip arthroplasty (THA) stability. </p> </div><div class="section"> <a class="named-anchor" id="d7449238e183"> <!-- named anchor --> </a> <h5 class="section-title" id="d7449238e184">Methods</h5> <p id="d7449238e186">A matched case (n = 67)-control (n = 247) design and conditional logistic regression model were used to examine risk factors for dislocation in primary THA. </p> </div><div class="section"> <a class="named-anchor" id="d7449238e188"> <!-- named anchor --> </a> <h5 class="section-title" id="d7449238e189">Results</h5> <p id="d7449238e191">When femoral offset was at least 3 mm greater than that of the contralateral hip, risk of dislocation was lower (p = 0.0192). Neither leg-length difference nor acetabular component abduction or version angle was associated with dislocation. </p> </div><div class="section"> <a class="named-anchor" id="d7449238e193"> <!-- named anchor --> </a> <h5 class="section-title" id="d7449238e194">Conclusions</h5> <p id="d7449238e196">Our data suggest restoring femoral offset is the most important technical factor in preventing THA dislocation. </p> </div>