Radiographic Measurements of the Foot and Ankle After Ankle Arthrodesis

Background: Ankle arthrodesis is an established treatment for ankle arthritis. For patients with ankle arthritis, the position of the talus during ankle arthrodesis may affect the radiographic parameters of the foot. The purpose of this study is to assess the radiographic relationship between talar...

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Main Authors: Jordan Boivin MD, Christopher Traynor MD, Kevin Stehlik BS, James Jastifer MD
Format: Article
Language:English
Published: SAGE Publishing 2023-07-01
Series:Foot & Ankle Orthopaedics
Online Access:https://doi.org/10.1177/24730114231187888
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author Jordan Boivin MD
Christopher Traynor MD
Kevin Stehlik BS
James Jastifer MD
author_facet Jordan Boivin MD
Christopher Traynor MD
Kevin Stehlik BS
James Jastifer MD
author_sort Jordan Boivin MD
collection DOAJ
description Background: Ankle arthrodesis is an established treatment for ankle arthritis. For patients with ankle arthritis, the position of the talus during ankle arthrodesis may affect the radiographic parameters of the foot. The purpose of this study is to assess the radiographic relationship between talar alignment and the longitudinal arch of the foot before and after ankle arthrodesis. Methods: We retrospectively reviewed a single-surgeon series of 30 patients who had undergone ankle arthrodesis. Measured parameters included the lateral tibiotalar angle (LTTA), lateral talometatarsal angle (LTMA), lateral talocalcaneal angle (LTCA), cuneiform height (CH), and calcaneal pitch (CP). Additional data collected included demographics, fusion construct type, and visual analog scale (VAS) measurements. Results: LTTA was increased from 68.2 ± 7.4 degrees preoperatively to 75.0 ± 6.4 degrees postoperatively ( P  = .001), LTMA increased from −2.0 ± 10.7 degrees to 4.0 ± 10.1 degrees ( P  < .001), CH increased from 20.1 ± 7.5 mm to 26.1 ± 8.4 mm ( P  < .001), LTCA and CP had no statistically significant change. VAS score decreased from 5.7 ± 2.7 to 1.3 ± 1.9 ( P  < .001). Conclusion: Correcting the talar alignment in the sagittal plane during ankle arthrodesis improved the radiographic parameters of the foot, contributing to restoration of the longitudinal arch. The clinical significance of these findings is that in patients undergoing ankle arthrodesis, the surgeon should be aware that the alignment of the foot will be altered at the time of ankle arthrodesis and should be considered in preoperative planning. Further research is needed to determine the effect of ankle arthrodesis in patients determined to have pes planus preoperatively. Level of Evidence: Level III, retrospective cohort study.
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spelling doaj.art-5e797643b97447ac848fd0f071bd67e12023-07-25T09:33:32ZengSAGE PublishingFoot & Ankle Orthopaedics2473-01142023-07-01810.1177/24730114231187888Radiographic Measurements of the Foot and Ankle After Ankle ArthrodesisJordan Boivin MD0Christopher Traynor MD1Kevin Stehlik BS2James Jastifer MD3Western Michigan Homer Stryker School of Medicine, Kalamazoo, MI, USAWestern Michigan Homer Stryker School of Medicine, Kalamazoo, MI, USAWestern Michigan Homer Stryker School of Medicine, Kalamazoo, MI, USAWestern Michigan Homer Stryker School of Medicine, Kalamazoo, MI, USABackground: Ankle arthrodesis is an established treatment for ankle arthritis. For patients with ankle arthritis, the position of the talus during ankle arthrodesis may affect the radiographic parameters of the foot. The purpose of this study is to assess the radiographic relationship between talar alignment and the longitudinal arch of the foot before and after ankle arthrodesis. Methods: We retrospectively reviewed a single-surgeon series of 30 patients who had undergone ankle arthrodesis. Measured parameters included the lateral tibiotalar angle (LTTA), lateral talometatarsal angle (LTMA), lateral talocalcaneal angle (LTCA), cuneiform height (CH), and calcaneal pitch (CP). Additional data collected included demographics, fusion construct type, and visual analog scale (VAS) measurements. Results: LTTA was increased from 68.2 ± 7.4 degrees preoperatively to 75.0 ± 6.4 degrees postoperatively ( P  = .001), LTMA increased from −2.0 ± 10.7 degrees to 4.0 ± 10.1 degrees ( P  < .001), CH increased from 20.1 ± 7.5 mm to 26.1 ± 8.4 mm ( P  < .001), LTCA and CP had no statistically significant change. VAS score decreased from 5.7 ± 2.7 to 1.3 ± 1.9 ( P  < .001). Conclusion: Correcting the talar alignment in the sagittal plane during ankle arthrodesis improved the radiographic parameters of the foot, contributing to restoration of the longitudinal arch. The clinical significance of these findings is that in patients undergoing ankle arthrodesis, the surgeon should be aware that the alignment of the foot will be altered at the time of ankle arthrodesis and should be considered in preoperative planning. Further research is needed to determine the effect of ankle arthrodesis in patients determined to have pes planus preoperatively. Level of Evidence: Level III, retrospective cohort study.https://doi.org/10.1177/24730114231187888
spellingShingle Jordan Boivin MD
Christopher Traynor MD
Kevin Stehlik BS
James Jastifer MD
Radiographic Measurements of the Foot and Ankle After Ankle Arthrodesis
Foot & Ankle Orthopaedics
title Radiographic Measurements of the Foot and Ankle After Ankle Arthrodesis
title_full Radiographic Measurements of the Foot and Ankle After Ankle Arthrodesis
title_fullStr Radiographic Measurements of the Foot and Ankle After Ankle Arthrodesis
title_full_unstemmed Radiographic Measurements of the Foot and Ankle After Ankle Arthrodesis
title_short Radiographic Measurements of the Foot and Ankle After Ankle Arthrodesis
title_sort radiographic measurements of the foot and ankle after ankle arthrodesis
url https://doi.org/10.1177/24730114231187888
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