Dual mobility and conventional bearings have comparably low dislocation rates for anterior-based approaches in total hip arthroplasty
Journal of Arthroplasty Dec 23, 2020
Van Nest DS, Li WT, Kozick Z, et al. - This study was carried out to match outcomes following primary total hip arthroplasty (THA) with anterior-based approaches between patients receiving dual mobility (DM) bearing versus standard bearing hip implants. Researchers retrospectively examined a consecutive series of individuals undergoing primary THA through an anterior-based approach. They conducted a 3:1 propensity score match between the standard and DM bearing patients to control for possible risk factors for instability. For each patient, functional outcomes, dislocations, and aseptic revisions were distinguished. They ascertained the effect of DM on postoperative outcomes applying univariate statistical analyses. They compared 250 DM bearings with 753 standard bearings. They found comparatively low dislocation rates between DM bearings and standard bearings for THA done using an anterior approach to the hip. Future study is required to ascertain whether specific patient populations may benefit from DM implants for primary THA when an anterior approach to the hip is being applied.
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