[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-460605-105":59,"doc-detail-460605-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","ultrasonography-or-radiography-for-suspected-pediatric-talocalcaneal-coalition-diagnostic-accuracy-and-reliability-study","Ultrasonography or Radiography for Suspected Pediatric Talocalcaneal Coalition - Diagnostic accuracy and reliability study","","Talocalcaneal coalition is a common pediatric tarsal coalition, yet incomplete ossification often limits detection by conventional radiographic signs such as the C sign and talar beak. This study compares radiation-free ultrasonography with radiography for suspected pediatric talocalcaneal coalition, using 3-dimensional CT scanning as the diagnostic standard. Eighty-six suspected cases underwent ultrasound, radiography, and 3D CT, with pediatric orthopaedic surgeons evaluating interobserver and intraobserver reliability and diagnostic performance metrics.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/ultrasonography-or-radiography-for-suspected-pediatric-talocalcaneal-coalition-diagnostic-accuracy-and-reliability-study/460605/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/ultrasonography-or-radiography-for-suspected-pediatric-talocalcaneal-coalition-diagnostic-accuracy-and-reliability-study/460605.png","ImageObject",300,407,{"name":92,"@type":93},"Hazel","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-03","2026-09-30",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why is radiography often underdiagnosing pediatric talocalcaneal coalition?","Question",{"text":112,"@type":113},"Incomplete ossification in children can make traditional radiographic signs less reliable, leading to underdiagnosis.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How was diagnostic accuracy assessed in this study?",{"text":117,"@type":113},"Three-dimensional CT scanning served as the diagnostic standard, and sensitivity, specificity, PPV, and NPV were calculated for ultrasonography and radiographic signs.",{"name":119,"@type":110,"acceptedAnswer":120},"Which diagnostic approach performed better overall for suspected pediatric cases?",{"text":121,"@type":113},"Ultrasonography showed high sensitivity and specificity and was more suitable than radiography, while the talar beak had very low sensitivity.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},460605,1790797002,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":29,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144,"preview_page_count":4},137441390410,"https://ap-avatar.wpscdn.com/avatar/2000252f4ab5702993?_k=1776741390130283984","Ultrasonography or Radiography for Suspected Pediatric  \nTalocalcaneal Coalition  \nXiong-tao Li, MD, Xian-tao Shen, MD, and Xing Wu, MD  \nBackground: Talocalcaneal coalition is a common tarsal coalition, but incomplete ossification in children often leads to underdiagnosis using traditional radiographic signs like the “Csign” and “talar beak.” Ultrasonography, which is radiation-free and detects unossified cartilage, has not been studied for pediatric talocalcaneal coalition. This study evaluates the accuracy and reliability of ultrasonography versus radiography in diagnosing suspected pediatric talocalcaneal coalition.  \nMethods: Eighty-six suspected talocalcaneal coalitions underwent ultrasonography, radiography, and 3-dimensional CT scanning. Three pediatric orthopaedic surgeons assessed ultrasound results and radiographic signs (“C sign” and “talar beak”) for interobserver and intraobserver reliability. Using CT as the diagnostic standard, the sensitivity, specificity, positive predictive value, and negative predictive value of ultrasonography and radiographic signs were evaluated.  \nResults: In a cohort of 86 suspected pediatric talocalcaneal coalitions, the mean age was 12 . 3 years. The interobserver reliability for the “C sign” was moderate (κ = 0. 55), while the interobserver reliability for ultrasonography was almost perfect (κ = 0. 87) . Using 3-dimensional CT scanning as the diagnostic  \nFrom the Department of Orthopedics Surgery, Wuhan Children’s Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China.  \nThis work was approved by the Research Ethics Board of the Wuhan Children’s Hospital, Tongji Medical College, Huazhong University of Science & Technology.  \nThe authors, their immediate families, and any research foundations with which they are affiliated have not received any financial payments or other benefits from any commercial entity related to the subject of this article.  \nThis study was supported by the Scientific Research Projects from Wuhan Municipal Health Commission (WX23A10) and the Soaring Plan of Youth Talent Development in Wuhan Children’s Hospital (2023TFJH01) and Hubei Province Health Science and Technology Project (WJ2023ZH007) .  \nThe authors declare no conflicts of interest.  \nReprints: Xiong-tao Li, MD, Department of Orthopedics Surgery, Wuhan Children’s Hospital, Tongji Medical College, Huazhong University of Science & Technology, No. 100 Hong-Kong Road, Jiang’an District, Wuhan City 430014, China. E-mail: [lixiongtao0604@126.com](lixiongtao0604@126.com).  \nCopyright © 2025 The Author(s) . Published by Wolters Kluwer Health, Inc. This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.  \nDOI: 10.1097/BPO.0000000000003106  \n[e132](e132 | www.pedorthopaedics.com)[ |](e132 | www.pedorthopaedics.com)[ www.pedorthopaedics.com](e132 | www.pedorthopaedics.com)  \nstandard, the specificity and sensitivity of the “C sign” for diagnosing talocalcaneal coalition in children were 86% and 54%, respectively. Ultrasonography demonstrated a sensitivity of 96% and a specificity of 98% . The “talar beak” had only 3 true positives and 25 false negatives, resulting in a sensitivity of 11%, which was statistically significant (P \u003C 0.001) .  \nConclusions: The “C sign” is useful but less accurate than ultrasonography for diagnosing suspected pediatric talocalcaneal coalition, while the “talar beak” is unsuitable due to low sensitivity. Ultrasonography can accurately detect pediatric talocalcaneal coalition, even in unossified cases. Compared with radiography, ultrasonography is more suitable for diagnosing suspected pediatric talocalcaneal coalition.  \nLevel of Evidence: Level III—diagnostic study.  \nKey Words: ultrason","cbCaim49szzOO2nU","https://ap.wps.com/l/cbCaim49szzOO2nU","pdf",388758,"English","# Background\n# Methods\n# Results\n# Conclusions","[{\"question\":\"Why is radiography often underdiagnosing pediatric talocalcaneal coalition?\",\"answer\":\"Incomplete ossification in children can make traditional radiographic signs less reliable, leading to underdiagnosis.\"},{\"question\":\"How was diagnostic accuracy assessed in this study?\",\"answer\":\"Three-dimensional CT scanning served as the diagnostic standard, and sensitivity, specificity, PPV, and NPV were calculated for ultrasonography and radiographic signs.\"},{\"question\":\"Which diagnostic approach performed better overall for suspected pediatric cases?\",\"answer\":\"Ultrasonography showed high sensitivity and specificity and was more suitable than radiography, while the talar beak had very low sensitivity.\"}]","Ultrasonography or Radiography for Suspected Pediatric Talocalcaneal Coalition - Diagnostic accuracy and reliability study | PDF",1790758874,15]