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The Impact of Hip Dysplasia on CAM Impingement

Predisposing factors for CAM-type femoroacetabular impingement (FAI) include acetabular protrusion and retroversion; however, nothing is known regarding development in dysplastic hips. The purpose of this study was to determine the correlation between CAM-type FAI and developmental dysplastic hips d...

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Autores principales: Heimer, Carsten Y. W., Wu, Chia H., Perka, Carsten, Hardt, Sebastian, Göhler, Friedemann, Winkler, Tobias, Bäcker, Henrik C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9316409/
https://www.ncbi.nlm.nih.gov/pubmed/35887626
http://dx.doi.org/10.3390/jpm12071129
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author Heimer, Carsten Y. W.
Wu, Chia H.
Perka, Carsten
Hardt, Sebastian
Göhler, Friedemann
Winkler, Tobias
Bäcker, Henrik C.
author_facet Heimer, Carsten Y. W.
Wu, Chia H.
Perka, Carsten
Hardt, Sebastian
Göhler, Friedemann
Winkler, Tobias
Bäcker, Henrik C.
author_sort Heimer, Carsten Y. W.
collection PubMed
description Predisposing factors for CAM-type femoroacetabular impingement (FAI) include acetabular protrusion and retroversion; however, nothing is known regarding development in dysplastic hips. The purpose of this study was to determine the correlation between CAM-type FAI and developmental dysplastic hips diagnosed using X-ray and rotational computed tomography. In this retrospective study, 52 symptomatic hips were included, with a mean age of 28.8 ± 7.6 years. The inclusion criteria consisted of consecutive patients who suffered from symptomatic dysplastic or borderline dysplastic hips and underwent a clinical examination, conventional radiographs and rotational computed tomography. Demographics, standard measurements and the rotational alignments were recorded and analyzed between the CAM and nonCAM groups. Among the 52 patients, 19 presented with CAM impingement, whereas, in 33 patients, no signs of CAM impingement were noticed. For demographics, no significant differences between the two groups were identified. On conventional radiography, the acetabular hip index as well as the CE angle for the development of CAM impingement were significantly different compared to the nonCAM group with a CE angle of 21.0° ± 5.4° vs. 23.7° ± 5.8° (p = 0.050) and an acetabular hip index of 25.6 ± 5.7 vs. 21.9 ± 7.3 (p = 0.031), respectively. Furthermore, a crossing over sign was observed to be more common in the nonCAM group, which is contradictory to the current literature. For rotational alignment, no significant differences were observed. In dysplastic hips, the CAM-type FAI correlated to a lower CE angle and a higher acetabular hip index. In contrast to the current literature, no significant correlations to the torsional alignment or to crossing over signs were observed.
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spelling pubmed-93164092022-07-27 The Impact of Hip Dysplasia on CAM Impingement Heimer, Carsten Y. W. Wu, Chia H. Perka, Carsten Hardt, Sebastian Göhler, Friedemann Winkler, Tobias Bäcker, Henrik C. J Pers Med Article Predisposing factors for CAM-type femoroacetabular impingement (FAI) include acetabular protrusion and retroversion; however, nothing is known regarding development in dysplastic hips. The purpose of this study was to determine the correlation between CAM-type FAI and developmental dysplastic hips diagnosed using X-ray and rotational computed tomography. In this retrospective study, 52 symptomatic hips were included, with a mean age of 28.8 ± 7.6 years. The inclusion criteria consisted of consecutive patients who suffered from symptomatic dysplastic or borderline dysplastic hips and underwent a clinical examination, conventional radiographs and rotational computed tomography. Demographics, standard measurements and the rotational alignments were recorded and analyzed between the CAM and nonCAM groups. Among the 52 patients, 19 presented with CAM impingement, whereas, in 33 patients, no signs of CAM impingement were noticed. For demographics, no significant differences between the two groups were identified. On conventional radiography, the acetabular hip index as well as the CE angle for the development of CAM impingement were significantly different compared to the nonCAM group with a CE angle of 21.0° ± 5.4° vs. 23.7° ± 5.8° (p = 0.050) and an acetabular hip index of 25.6 ± 5.7 vs. 21.9 ± 7.3 (p = 0.031), respectively. Furthermore, a crossing over sign was observed to be more common in the nonCAM group, which is contradictory to the current literature. For rotational alignment, no significant differences were observed. In dysplastic hips, the CAM-type FAI correlated to a lower CE angle and a higher acetabular hip index. In contrast to the current literature, no significant correlations to the torsional alignment or to crossing over signs were observed. MDPI 2022-07-12 /pmc/articles/PMC9316409/ /pubmed/35887626 http://dx.doi.org/10.3390/jpm12071129 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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/).
spellingShingle Article
Heimer, Carsten Y. W.
Wu, Chia H.
Perka, Carsten
Hardt, Sebastian
Göhler, Friedemann
Winkler, Tobias
Bäcker, Henrik C.
The Impact of Hip Dysplasia on CAM Impingement
title The Impact of Hip Dysplasia on CAM Impingement
title_full The Impact of Hip Dysplasia on CAM Impingement
title_fullStr The Impact of Hip Dysplasia on CAM Impingement
title_full_unstemmed The Impact of Hip Dysplasia on CAM Impingement
title_short The Impact of Hip Dysplasia on CAM Impingement
title_sort impact of hip dysplasia on cam impingement
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9316409/
https://www.ncbi.nlm.nih.gov/pubmed/35887626
http://dx.doi.org/10.3390/jpm12071129
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