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Technical note for intraoperative determination of proper acetabular cup size in primary total hip arthroplasty

World Journal of Methodology 2024年第1期14卷 94-101页

作者： Panagiotis Karampinas John Vlamis Athanasios Galanis Michail Vavourakis Anastasia Krexi Evangelos Sakellariou Christos Patilas spiros pneumaticos 3^(rd)Department of Orthopaedic Surgery National&Kapodistrian University of AthensKAT General HospitalAthens 14561Greece

BACKGROUND Selecting the optimal size of components is crucial when performing a primary total hip *** the accurate size of the acetabular component can occasionally be exacting,chiefly for surgeons with little experience,whilst the complications of imprecise acetabular sizing or over-reaming can be potentially *** To assist clinicians intraoperatively with a simple and repeatable tip in elucidating the ambivalence when determining the proper acetabular component size is not straightforwardly achieved,specifically when surgeons are inexperienced or preoperative templating is *** This method was employed in 263 operations in our department from June 2021 to December *** operations were performed by the same team of joint reconstruction surgeons,employing a typical posterior hip approach *** types of acetabular shells implanted were:The Dynasty®acetabular cup system(MicroPort Orthopedics,Shanghai,China)and the R3®acetabular system(Smith&Nephew,Watford,United Kingdom),which both feature cementless press-fit *** The mean value of all cases was calculated and collated with each *** distinguished as oversized an implanted acetabular shell when its size was>2 mm larger than the size of the acetabular size indicator reamer(ASIR)or when the implanted shell was larger than 4 mm compared to the preoperative planned *** median size of the implanted acetabular shell was 52(48–54)mm,while the median size of the preoperatively planned cup was 50(48–56)mm,and the median size of the ASIR was 52(50–54)*** correlation coefficient between ASIR size and implanted acetabular component size exhibited a high positive correlation with r=0.719(P<0.001).Contrariwise,intraoperative ASIR measurements precisely predicted the implanted cups’size or differed by only one size(2 mm)in 245 *** In our study,we demonstrated that the size of the first acetabular reamer not entering freely in the acetabular

关键词： Acetabular shell Total hip arthroplasty Hip Acetabulum Acetabular component Primary hip arthroplasty

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