Moreta, JesúsGayoso, ÓscarDonaire Hoyas, DanielRoces García, JorgeGómez Vallejo, JesúsMoya-Gómez, EstherRaya-Roldán, DavidAlbert-Ullibarri, AlbertoMarqués López, FernandoAlbareda, Jorge2023-02-072023-02-072022Moreta J, Gayoso Ó, Donaire-Hoyas D, Roces-García J, Gómez-Vallejo J, Moya-Gómez E, Raya-Roldán D, Albert-Ullibarri A, Marqués-López F, Albareda J. Orthopedic surgeons' accuracy when orienting an acetabular cup. A comparison with untrained individuals. Medicina (Kaunas). 2022 Jul 21;58(7):973. DOI: 10.3390/medicina580709731010-660Xhttp://hdl.handle.net/10230/55658Background and Objectives: Previous studies demonstrated a huge variability among surgeons when it comes to reproducing the position of an acetabular cup in total hip arthroplasty. Our main objective is to determine if orthopedic surgeons can replicate a given orientation on a pelvic model better than untrained individuals. Our secondary objective is to determine if experience has any influence on their ability for this task. Materials and Methods: A group of specialist orthopedic hip surgeons and a group of volunteers with no medical training were asked to reproduce three given (randomly generated) acetabular cup orientations (inclination and anteversion) on a pelvic model. Error was measured by means of a hip navigation system and comparisons between groups were made using the appropriate statistical methods. Results: The study included 107 individuals, 36 orthopedic surgeons and 71 untrained volunteers. The mean error among surgeons was slightly greater as regards both inclination (7.84 ± 5.53 vs. 6.70 ± 4.03) and anteversion (5.85 ± 4.52 vs. 5.48 ± 3.44), although statistical significance was not reached (p = 0.226 and p = 0.639, respectively). Similarly, although surgeons with more than 100 procedures a year obtained better results than those with less surgical experience (8.01 vs. 7.67 degrees of error in inclination and 5.83 vs. 5.87 in anteversion), this difference was not statistically significant, either (p = 0.852 and p = 0.981). Conclusions: No differences were found in the average error made by orthopedic surgeons and untrained individuals. Furthermore, the surgeons' cup orientation accuracy was not seen to improve significantly with experience.application/pdfeng© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).info:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/medicina58070973AccuracyAcetabulumArthroplastyHip prosthesisNavigationTotal hip replacementinfo:eu-repo/semantics/openAccess