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A STUDY EXAMINES FACTORS ASSOCIATED WITH SCREW USE IN PRESS-FIT UNCEMENTED CUPS FOR TOTAL HIP REPLACEMENTS

A STUDY EXAMINES FACTORS ASSOCIATED WITH SCREW USE IN PRESS-FIT UNCEMENTED CUPS FOR TOTAL HIP REPLACEMENTS

At the annual meeting of the International Hip Society, study data on factors related to screw use with press-fit uncemented cups used in primary total hip arthroplasty (THA) were presented. The research team retrospectively reviewed 248 patients (277 hips) who underwent THA using a single prosthetic design. Overall, screws were used in 88 hips to achieve primary cup fixation and were not used in 189 hips. Researchers found higher screw use among women, patients with less physical activity, patients with acetabular Types A or C, and patients with a distance of more than 3 mm from the center of the prosthetic femoral head to the normal center of rotation. Among the group of patients who received screws, four required revision surgery; among patients who did not receive screws, five required revision surgery.