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The Influence of Sagittal Angle of Posterior Malleolus Fracture on Ankle Joint Stability: A Retrospective Study of 120 Cases

OBJECTIVE: Due to the different force exerted during the posterior malleolus fracture (PMF), the difference in sagittal angle (SA) between the fracture fragments may affect ankle stability. But this aspect is less well studied and the aim of this study was to investigate the relationship between SA...

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Autores principales: Zhang, Lei, Yang, Yuening, Peng, Xiaoyao, Xiong, Jixiang, Sun, Xinghao, Xia, Zhangrong, Xiong, Bin, Wang, Guoyou
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley & Sons Australia, Ltd 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10350384/
https://www.ncbi.nlm.nih.gov/pubmed/37264543
http://dx.doi.org/10.1111/os.13771
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author Zhang, Lei
Yang, Yuening
Peng, Xiaoyao
Xiong, Jixiang
Sun, Xinghao
Xia, Zhangrong
Xiong, Bin
Wang, Guoyou
author_facet Zhang, Lei
Yang, Yuening
Peng, Xiaoyao
Xiong, Jixiang
Sun, Xinghao
Xia, Zhangrong
Xiong, Bin
Wang, Guoyou
author_sort Zhang, Lei
collection PubMed
description OBJECTIVE: Due to the different force exerted during the posterior malleolus fracture (PMF), the difference in sagittal angle (SA) between the fracture fragments may affect ankle stability. But this aspect is less well studied and the aim of this study was to investigate the relationship between SA and the stability of PMF. METHODS: The imaging data of 120 patients with PMFs from January 2014 to November 2022 were collected retrospectively and reconstructed. We first measured SA, posterior fragment area (PFA) and fragment area ratio (FAR), reanalyzing the correlation of SA with PFA and FAR, respectively. To better describe the morphological characteristics of the fracture fragments, we further measured the fragment width diameter ratio (FWR), the fragment length ratio (FLR), fragment height (FH), contact area (CA), and finally carried these data into the regression model of SA versus FAR to conduct the intermediary role. RESULTS: SA was negatively correlated with PFA(s) (r = −0.583, P < 0.001), with regression equation s = −0.063SA + 3.066; SA was negatively correlated with FAR (r = −0.204, P < 0.05), with regression equation FAR = −0.002SA + 0.198; A significant correlation was found between FWR, FLR, FH, CA and SA (P < 0.05), as well as between FWR, FLR, FH and FAR (P < 0.05); Further intermediary role analysis showed that FWR, FLR, FH had a partial intermediary role between SA and FAR. CONCLUSIONS: As SA increased, PFA and FAR decreased, so the larger the SA was due to the effect of vertical shear force, reflecting higher ankle stability, meanwhile, FWR, FLR and FH should also be considered on the fixation method of fracture fragments.
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spelling pubmed-103503842023-07-18 The Influence of Sagittal Angle of Posterior Malleolus Fracture on Ankle Joint Stability: A Retrospective Study of 120 Cases Zhang, Lei Yang, Yuening Peng, Xiaoyao Xiong, Jixiang Sun, Xinghao Xia, Zhangrong Xiong, Bin Wang, Guoyou Orthop Surg Clinical Articles OBJECTIVE: Due to the different force exerted during the posterior malleolus fracture (PMF), the difference in sagittal angle (SA) between the fracture fragments may affect ankle stability. But this aspect is less well studied and the aim of this study was to investigate the relationship between SA and the stability of PMF. METHODS: The imaging data of 120 patients with PMFs from January 2014 to November 2022 were collected retrospectively and reconstructed. We first measured SA, posterior fragment area (PFA) and fragment area ratio (FAR), reanalyzing the correlation of SA with PFA and FAR, respectively. To better describe the morphological characteristics of the fracture fragments, we further measured the fragment width diameter ratio (FWR), the fragment length ratio (FLR), fragment height (FH), contact area (CA), and finally carried these data into the regression model of SA versus FAR to conduct the intermediary role. RESULTS: SA was negatively correlated with PFA(s) (r = −0.583, P < 0.001), with regression equation s = −0.063SA + 3.066; SA was negatively correlated with FAR (r = −0.204, P < 0.05), with regression equation FAR = −0.002SA + 0.198; A significant correlation was found between FWR, FLR, FH, CA and SA (P < 0.05), as well as between FWR, FLR, FH and FAR (P < 0.05); Further intermediary role analysis showed that FWR, FLR, FH had a partial intermediary role between SA and FAR. CONCLUSIONS: As SA increased, PFA and FAR decreased, so the larger the SA was due to the effect of vertical shear force, reflecting higher ankle stability, meanwhile, FWR, FLR and FH should also be considered on the fixation method of fracture fragments. John Wiley & Sons Australia, Ltd 2023-06-01 /pmc/articles/PMC10350384/ /pubmed/37264543 http://dx.doi.org/10.1111/os.13771 Text en © 2023 The Authors. Orthopaedic Surgery published by Tianjin Hospital and John Wiley & Sons Australia, Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Clinical Articles
Zhang, Lei
Yang, Yuening
Peng, Xiaoyao
Xiong, Jixiang
Sun, Xinghao
Xia, Zhangrong
Xiong, Bin
Wang, Guoyou
The Influence of Sagittal Angle of Posterior Malleolus Fracture on Ankle Joint Stability: A Retrospective Study of 120 Cases
title The Influence of Sagittal Angle of Posterior Malleolus Fracture on Ankle Joint Stability: A Retrospective Study of 120 Cases
title_full The Influence of Sagittal Angle of Posterior Malleolus Fracture on Ankle Joint Stability: A Retrospective Study of 120 Cases
title_fullStr The Influence of Sagittal Angle of Posterior Malleolus Fracture on Ankle Joint Stability: A Retrospective Study of 120 Cases
title_full_unstemmed The Influence of Sagittal Angle of Posterior Malleolus Fracture on Ankle Joint Stability: A Retrospective Study of 120 Cases
title_short The Influence of Sagittal Angle of Posterior Malleolus Fracture on Ankle Joint Stability: A Retrospective Study of 120 Cases
title_sort influence of sagittal angle of posterior malleolus fracture on ankle joint stability: a retrospective study of 120 cases
topic Clinical Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10350384/
https://www.ncbi.nlm.nih.gov/pubmed/37264543
http://dx.doi.org/10.1111/os.13771
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