Changes In Pelvic Orientation After Total Hip Arthroplasty : A Prospective Study With EOS™
Barbier, O.; Skalli, W.; Mainard, D.
Acta Orthopaedica Belgica 83(3): 360-366
2017
ISSN/ISBN: 0001-6462 PMID: 30423637 Document Number: 693707
Changes in pelvic orientation after THA could alter the relationship between the femoral stem and the acetabular component and may be responsible of dislocation and implant degeneration. EOS™ technology allows three-dimensional analysis of the pelvis in functional position with low irradiation. The purpose of the study was to evaluate changes in pelvic orientation after THA in standing position with EOS™. In a prospective study, EOS™ was performed in standing position preoperatively and 3 months after computer assisted THA for primary hip osteoarthritis. Differences between pre- and postoperative pelvic parameters values were analyzed. 40 patients were included. Changes greater than 5° was noted in 12,5% of cases for pelvic incidence, 35% of cases for sacral slope and in 22,5% of cases for pelvic version. In conclusion, pelvic parameters could be modified after THA.