Evaluation of the Accuracy of Cup Positioning in Total Hip Arthroplasty Using the Antero-lateral Approach

Background: total hip arthroplasty (tha) is a highly successful orthopedic procedure,recognized as the gold standard for addressing advanced osteoarthritis, with a projected globalincrease in performed cases.objectives: this study investigated the accuracy of cup positioning in patients undergoing thausing the anterolateral (al) approach.methods: this cross-sectional study included patients undergoing altha at shafa yahyaiyanhospital in tehran, affiliated with the iran university of medical sciences, from 2018 to 2023.post-operative radiological evaluations were conducted, and anteversion and inclination wereassessed using established protocols. a safe zone for cup orientation was defined with aninclination angle of 40±10° and anteversion angle of 15±10°.results: among 91 patients, the mean age was 51.14 years and 48 cases (52.7%) were male.considering the safe zone for cup orientation, 69 patients (75.8%) fell within the inclinationangle safe zone and 46(50.5%) were within the anteversion angle safe zone. however, nosignificant associations were found between age, gender, side of operation and the safe zones foranteversion and inclination.conclusion: the results indicated that the al approach, as performed by experienced surgeons,achieved favorable cup positioning in the majority of patients, regardless of age and gender.