{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T21:36:38Z","timestamp":1777498598157,"version":"3.51.4"},"reference-count":61,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T00:00:00Z","timestamp":1761177600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T00:00:00Z","timestamp":1761177600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"Commission of Research and Innovation of the M\u00e1xima Medical Centre","award":["2021.coi.015"],"award-info":[{"award-number":["2021.coi.015"]}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Children's Orthopaedics"],"published-print":{"date-parts":[[2025,12]]},"abstract":"<jats:sec>\n                    <jats:title>Introduction:<\/jats:title>\n                    <jats:p>Clubfoot is a congenital birth defect affecting musculoskeletal tissues of the affected lower legs, resulting in the typical appearance and changes in muscle-tendon properties. These properties change during development due to growth and activity, but how these properties differ across ages in clubfoot remains not fully understood. This study aimed to describe plantarflexor muscle-tendon volumes between affected and unaffected legs in unilateral clubfoot patients and explore the relationship between muscle volume and age.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>A prospective cross-sectional study was performed on unilateral clubfoot patients treated with the Ponseti method. Muscle-tendon volumes of the medial and lateral gastrocnemius, soleus, and Achilles tendons in both affected and unaffected legs of clubfoot patients were assessed using ultrasound. Volumetric reconstructions were made using three-dimensional ultrasound (3DUS). Statistical analyses compared muscle-tendon volume between legs and their relationship with age.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>A total of 25 clubfoot patients with good clinical status aged between 2.0 and 11.8\u2009years were analyzed. Smaller plantarflexor muscle and greater Achilles tendon volumes were found in the affected leg compared to the unaffected leg. Furthermore, age was not significantly related to absolute muscle volume difference between the legs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion and Conclusions:<\/jats:title>\n                    <jats:p>The findings of this study indicate that changes in muscle and tendon volume are present in treated clubfoot patients of multiple ages, enhancing understanding of their muscle-tendon morphology. The clinical significance of muscle-tendon alterations and their adaptation to targeted interventions remains to be established. Further research should investigate the relationship between muscle-tendon morphology and clinical status of (relapsed) clubfoot patients.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/18632521251387519","type":"journal-article","created":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T05:01:14Z","timestamp":1761282074000},"page":"473-482","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Muscle-tendon properties assessed by three-dimensional ultrasound in clinically well-performing clubfoot patients treated with the Ponseti method"],"prefix":"10.1177","volume":"19","author":[{"given":"Quinten M. P.","family":"Vervaart","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery &amp; Trauma, M\u00e1xima MC, Veldhoven, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3099-6569","authenticated-orcid":false,"given":"Saskia D. N.","family":"Wijnands","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery &amp; Trauma, M\u00e1xima MC, Veldhoven, The Netherlands"},{"name":"Human Movement Biomechanics Research Group, Faculty of Movement and Rehabilitation Sciences, KU Leuven, Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arnold T.","family":"Besselaar","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery &amp; Trauma, M\u00e1xima MC, Veldhoven, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Benedicte","family":"Vanwanseele","sequence":"additional","affiliation":[{"name":"Human Movement Biomechanics Research Group, Faculty of Movement and Rehabilitation Sciences, KU Leuven, Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5223-7649","authenticated-orcid":false,"given":"Maria C.","family":"van der Steen","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery &amp; Trauma, M\u00e1xima MC, Veldhoven, The Netherlands"},{"name":"Department of Orthopaedic Surgery &amp; Trauma, Catharina Hospital Eindhoven, Eindhoven, the Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,10,23]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.eclinm.2023.102178"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.2519\/jospt.1994.20.1.1"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.21037\/atm-20-7236"},{"key":"e_1_3_2_5_2","first-page":"441","volume-title":"Congenital clubfoot: fundamentals of treatment","author":"Ponseti IV.","year":"1996","unstructured":"Ponseti IV. Congenital clubfoot: fundamentals of treatment. Berlin: Springer; 1996. pp. 441\u2013459."},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.otsr.2012.11.001"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1080\/17453674.2017.1294416"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-009-0734-9"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1542\/peds.113.2.376"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.rbo.2015.11.006"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1053\/j.jfas.2008.07.002"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198062010-00004"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-013-3386-8"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.gaitpost.2018.08.006"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.3390\/children10050785"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.gaitpost.2024.01.010"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.gaitpost.2025.07.309"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.gaitpost.2022.01.007"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0054100"},{"key":"e_1_3_2_20_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-010-1657-1"},{"key":"e_1_3_2_21_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11832-009-0179-4"},{"key":"e_1_3_2_22_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11832-012-0444-9"},{"key":"e_1_3_2_23_2","doi-asserted-by":"publisher","DOI":"10.2147\/IJGM.S320115"},{"key":"e_1_3_2_24_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198062010-00003"},{"key":"e_1_3_2_25_2","doi-asserted-by":"publisher","DOI":"10.1097\/BPB.0000000000000288"},{"key":"e_1_3_2_26_2","doi-asserted-by":"publisher","DOI":"10.1097\/BPO.0b013e3181b76a5f"},{"key":"e_1_3_2_27_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.99B1.BJJ-2016-0131.R1"},{"key":"e_1_3_2_28_2","doi-asserted-by":"publisher","DOI":"10.1111\/joa.13817"},{"key":"e_1_3_2_29_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-7580.2010.01218.x"},{"key":"e_1_3_2_30_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-7580.2011.01402.x"},{"key":"e_1_3_2_31_2","doi-asserted-by":"publisher","DOI":"10.1590\/0100-3984.2018.0086"},{"key":"e_1_3_2_32_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00776-012-0312-y"},{"key":"e_1_3_2_33_2","doi-asserted-by":"publisher","DOI":"10.1177\/2309499019839126"},{"key":"e_1_3_2_34_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-4598(199808)21:8<1006::AID-MUS4>3.0.CO;2-C"},{"key":"e_1_3_2_35_2","doi-asserted-by":"publisher","DOI":"10.1249\/01.MSS.0000142407.25188.05"},{"key":"e_1_3_2_36_2","doi-asserted-by":"publisher","DOI":"10.1590\/0004-282x-anp-2021-0038"},{"key":"e_1_3_2_37_2","doi-asserted-by":"publisher","DOI":"10.3389\/fphys.2019.01511"},{"key":"e_1_3_2_38_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1361-8415(00)00034-7"},{"key":"e_1_3_2_39_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1361-8415(99)80004-8"},{"key":"e_1_3_2_40_2","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2474-6-40"},{"key":"e_1_3_2_41_2","doi-asserted-by":"publisher","DOI":"10.1201\/9780429258589"},{"issue":"11","key":"e_1_3_2_42_2","first-page":"1","article-title":"Muscle volume evaluation using 3DCT for congenital clubfoot","volume":"10","author":"Kakihana M","year":"2021","unstructured":"Kakihana M, Tochigi Y, Ozeki S. Muscle volume evaluation using 3DCT for congenital clubfoot. J Orthop Case Rep 2021; 10(11):1\u20134.","journal-title":"J Orthop Case Rep"},{"key":"e_1_3_2_43_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.M.01257"},{"key":"e_1_3_2_44_2","doi-asserted-by":"publisher","DOI":"10.1002\/1097-4598(200011)23:11<1647::AID-MUS1>3.0.CO;2-M"},{"key":"e_1_3_2_45_2","doi-asserted-by":"publisher","DOI":"10.1098\/rstb.2010.0316"},{"issue":"5","key":"e_1_3_2_46_2","first-page":"1","article-title":"Relationship between recurrent adductus deformity of the forefoot and Achilles tendon elongation following Ponseti treatment in children with idiopathic clubfoot","volume":"110","author":"Demirel M","year":"2020","unstructured":"Demirel M, Bilgili F, \u00d6zkara Bilgili \u00c7, et al Relationship between recurrent adductus deformity of the forefoot and Achilles tendon elongation following Ponseti treatment in children with idiopathic clubfoot. J Am Podiatr Med Assoc 2020; 110(5):1\u201325.","journal-title":"J Am Podiatr Med Assoc"},{"key":"e_1_3_2_47_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-4598(200006)23:6<851::AID-MUS3>3.0.CO;2-A"},{"key":"e_1_3_2_48_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11832-006-0004-2"},{"key":"e_1_3_2_49_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-018-3873-3"},{"key":"e_1_3_2_50_2","doi-asserted-by":"publisher","DOI":"10.1152\/jappl.1998.85.2.398"},{"key":"e_1_3_2_51_2","volume-title":"Congenital clubfoot: fundamentals of treatment","author":"Ponseti I.","year":"1996","unstructured":"Ponseti I. Congenital clubfoot: fundamentals of treatment. Oxford: Oxford University Press, 1996."},{"key":"e_1_3_2_52_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.106B7.BJJ-2023-1258.R1"},{"key":"e_1_3_2_53_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.101B6.BJJ-2018-1421.R1"},{"key":"e_1_3_2_54_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.RVW.18.00124"},{"key":"e_1_3_2_55_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcot.2021.04.029"},{"key":"e_1_3_2_56_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.cmpb.2025.108972"},{"key":"e_1_3_2_57_2","doi-asserted-by":"publisher","DOI":"10.1097\/BPO.0000000000001357"},{"key":"e_1_3_2_58_2","first-page":"167","article-title":"Descriptive epidemiology of clubfoot in Peru: a clinic-based study","volume":"33","author":"Palma M","year":"2013","unstructured":"Palma M, Cook T, Segura J, et al Descriptive epidemiology of clubfoot in Peru: a clinic-based study. Iowa Orthop J 2013; 33: 167\u2013171.","journal-title":"Iowa Orthop J"},{"key":"e_1_3_2_59_2","doi-asserted-by":"publisher","DOI":"10.1097\/BPB.0000000000000525"},{"key":"e_1_3_2_60_2","doi-asserted-by":"publisher","DOI":"10.3390\/ijms242015183"},{"key":"e_1_3_2_61_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00421-002-0744-8"},{"key":"e_1_3_2_62_2","doi-asserted-by":"publisher","DOI":"10.3390\/children10030455"}],"container-title":["Journal of Children's Orthopaedics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/18632521251387519","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/18632521251387519","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/18632521251387519","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T15:10:01Z","timestamp":1777389001000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/18632521251387519"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,10,23]]},"references-count":61,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2025,12]]}},"alternative-id":["10.1177\/18632521251387519"],"URL":"https:\/\/doi.org\/10.1177\/18632521251387519","relation":{},"ISSN":["1863-2521","1863-2548"],"issn-type":[{"value":"1863-2521","type":"print"},{"value":"1863-2548","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,10,23]]}}}