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

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Kaveh Gharanizadeh Kaveh Gharanizadeh; Karim Pisoudeh Karim Pisoudeh; Mahmoodreza Sarikhani Mahmoodreza Sarikhani; amir aminian amir aminian; Mohammadreza Bahaeddini Mohammadreza Bahaeddini

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Journal Paper

Paper Information

Journal: Journal of Research in Orthopedic Science Year:2022 | Volume:9 | Issue:3 Page(s): 149-156

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Title

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

Author(s)

Keywords

Total hip arthroplasty (THA)

Anteversion

Inclination

Cup positioning

Abstract

Background: Total hip arthroplasty (THA) is a highly successful orthopedic procedure, recognized as the gold standard for addressing advanced osteoarthritis, with a projected global increase in performed cases. Objectives: This study investigated the accuracy of Cup positioning in patients undergoing THA using the anterolateral (AL) approach. Methods: This cross-sectional study included patients undergoing ALTHA at Shafa Yahyaiyan Hospital in Tehran, affiliated with the Iran University of Medical Sciences, from 2018 to 2023. Post-operative radiological evaluations were conducted, and Anteversion and Inclination were assessed using established protocols. A safe zone for cup orientation was defined with an Inclination 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 Inclination angle safe zone and 46(50.5%) were within the Anteversion angle safe zone. However, no significant associations were found between age, gender, side of operation and the safe zones for Anteversion 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.

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