Chronological Changes in Sagittal Femoral Bowing after Primary Cementless Total Hip Arthroplasty: A Comparative 3D CT Study

Little is known about dynamic changes of femoral anatomy after total hip arthroplasty (THA), in particular about sagittal femoral bowing (SFB). A 3D CT study was designed to evaluate the chronological changes of SFB after cementless femoral stem implantation for primary THA. Ten patients who underwe...

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Main Authors: Francesco Pardo, Antonino Amedeo La Mattina, Emanuele Diquattro, Stefano Lucchini, Marco Viceconti, Andrea Minerba, Francesco Castagnini, Francesco Traina
Format: Article
Language:English
Published: MDPI AG 2023-12-01
Series:Journal of Personalized Medicine
Subjects:
Online Access:https://www.mdpi.com/2075-4426/13/12/1704
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author Francesco Pardo
Antonino Amedeo La Mattina
Emanuele Diquattro
Stefano Lucchini
Marco Viceconti
Andrea Minerba
Francesco Castagnini
Francesco Traina
author_facet Francesco Pardo
Antonino Amedeo La Mattina
Emanuele Diquattro
Stefano Lucchini
Marco Viceconti
Andrea Minerba
Francesco Castagnini
Francesco Traina
author_sort Francesco Pardo
collection DOAJ
description Little is known about dynamic changes of femoral anatomy after total hip arthroplasty (THA), in particular about sagittal femoral bowing (SFB). A 3D CT study was designed to evaluate the chronological changes of SFB after cementless femoral stem implantation for primary THA. Ten patients who underwent unilateral primary THA with a cementless femoral stem, with 2 consecutive CT scans (extending from the fourth lumbar vertebra to the tibial plateaus), performed before THA and at least 3 years after THA, were enrolled. The 3D models of femurs were created using image segmentation software. Using the two CT scans, SFB values of the proximal and middle thirds were calculated on the replaced and untreated sides by two different observers. Eight anatomical stems and two conical stems were involved. The post-operative CT was performed at an average follow-up of 6.5 years after THA (range: 3–12.5). The measurements performed by the two observers did not differ in the proximal and middle regions. A significant difference between the pre-operative and post-operative SFB compared to the untreated side was found in the proximal femur segment (<i>p</i> = 0.004). Use of a cementless stem in THA induced chronological changes in SFB of the proximal femur, after a minimum timespan of 3 years.
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spelling doaj.art-aa3a8df3646d4ebda0244080af3fd1332023-12-22T14:20:00ZengMDPI AGJournal of Personalized Medicine2075-44262023-12-011312170410.3390/jpm13121704Chronological Changes in Sagittal Femoral Bowing after Primary Cementless Total Hip Arthroplasty: A Comparative 3D CT StudyFrancesco Pardo0Antonino Amedeo La Mattina1Emanuele Diquattro2Stefano Lucchini3Marco Viceconti4Andrea Minerba5Francesco Castagnini6Francesco Traina7Orthopedics-Traumatology and Prosthetic Surgery and Hip and Knee Revision, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, ItalyMedical Technology Lab, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, ItalyOrthopedics-Traumatology and Prosthetic Surgery and Hip and Knee Revision, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, ItalyOrthopedics-Traumatology and Prosthetic Surgery and Hip and Knee Revision, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, ItalyMedical Technology Lab, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, ItalyOrthopedics-Traumatology and Prosthetic Surgery and Hip and Knee Revision, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, ItalyOrthopedics-Traumatology and Prosthetic Surgery and Hip and Knee Revision, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, ItalyDepartment of Biomedical and Neuromotor Science-DIBINEM, University of Bologna, 40127 Bologna, ItalyLittle is known about dynamic changes of femoral anatomy after total hip arthroplasty (THA), in particular about sagittal femoral bowing (SFB). A 3D CT study was designed to evaluate the chronological changes of SFB after cementless femoral stem implantation for primary THA. Ten patients who underwent unilateral primary THA with a cementless femoral stem, with 2 consecutive CT scans (extending from the fourth lumbar vertebra to the tibial plateaus), performed before THA and at least 3 years after THA, were enrolled. The 3D models of femurs were created using image segmentation software. Using the two CT scans, SFB values of the proximal and middle thirds were calculated on the replaced and untreated sides by two different observers. Eight anatomical stems and two conical stems were involved. The post-operative CT was performed at an average follow-up of 6.5 years after THA (range: 3–12.5). The measurements performed by the two observers did not differ in the proximal and middle regions. A significant difference between the pre-operative and post-operative SFB compared to the untreated side was found in the proximal femur segment (<i>p</i> = 0.004). Use of a cementless stem in THA induced chronological changes in SFB of the proximal femur, after a minimum timespan of 3 years.https://www.mdpi.com/2075-4426/13/12/1704procurvatumanatomic stembowingmodificationdeformationstem alignment
spellingShingle Francesco Pardo
Antonino Amedeo La Mattina
Emanuele Diquattro
Stefano Lucchini
Marco Viceconti
Andrea Minerba
Francesco Castagnini
Francesco Traina
Chronological Changes in Sagittal Femoral Bowing after Primary Cementless Total Hip Arthroplasty: A Comparative 3D CT Study
Journal of Personalized Medicine
procurvatum
anatomic stem
bowing
modification
deformation
stem alignment
title Chronological Changes in Sagittal Femoral Bowing after Primary Cementless Total Hip Arthroplasty: A Comparative 3D CT Study
title_full Chronological Changes in Sagittal Femoral Bowing after Primary Cementless Total Hip Arthroplasty: A Comparative 3D CT Study
title_fullStr Chronological Changes in Sagittal Femoral Bowing after Primary Cementless Total Hip Arthroplasty: A Comparative 3D CT Study
title_full_unstemmed Chronological Changes in Sagittal Femoral Bowing after Primary Cementless Total Hip Arthroplasty: A Comparative 3D CT Study
title_short Chronological Changes in Sagittal Femoral Bowing after Primary Cementless Total Hip Arthroplasty: A Comparative 3D CT Study
title_sort chronological changes in sagittal femoral bowing after primary cementless total hip arthroplasty a comparative 3d ct study
topic procurvatum
anatomic stem
bowing
modification
deformation
stem alignment
url https://www.mdpi.com/2075-4426/13/12/1704
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