Evaluation of Native Femoral Neck Version and Final Stem Version Variability in Patients With Osteoarthritis Undergoing Robotically Implanted Total Hip Arthroplasty

The Journal of Arthroplasty
Andrea MarcovigiFabio Catani

Abstract

Combined anteversion in total hip arthroplasty influences both dislocation risk and range of motion. One of its components, stem version (SV), could be dictated by many factors, from native femoral anatomy to stem geometry and surgeon's choice. In the present multicenter study, robotic technology was used to assess the influence of native femoral version on final SV and combined anteversion using a straight, uncemented stem. Three hundred sixty-two patients undergoing total hip arthroplasty were enrolled from 3 different orthopedic centers from 2012 and 2016. All patients underwent computed tomography planning with measurement of femoral neck version (FNV) and intraoperative measurement of stem version (SV), acetabular component version (AV), and combined version (CV) with robotic instrumentation. Mean FNV was 5.0° ± 9.6°, and SV was 6.4° ± 9.7°. The average difference between FNV and SV was 1.6° ± 9.8°. A moderate correlation was found between FNV and SV (R = 0.48, P < .001). SV was between 5° and 20° in 174 patients (48%). Mean CV was 28.2° ± 7.9°. A strong correlation was found between SV and CV (R = 0.89, P < .001). A significant difference in SV was found between the 3 centers (P < .001). CV was <25° in 109 patients (30.1%...Continue Reading

Citations

Feb 15, 2020·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Martin A BelzunceAlister Hart
Dec 2, 2020·SICOT-J·Pascal KouyoumdjianRemy Coulomb
Sep 30, 2020·The Journal of the American Academy of Orthopaedic Surgeons·Gregory J KirchnerVincent M Moretti
Aug 10, 2021·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·Andrew L SchaverRobert W Westermann
Nov 21, 2021·International Orthopaedics·Hong-Seok KimKyung-Hoi Koo

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