Anatomical Characteristics of Extensor Hallucis Longus Tendon Variations and Its Clinical Implications: A Korean Cadaveric Study

Jeong-Hyun Park, Yu-Jin Choi, Mijeong Lee, Digud Kim, Hyung-Wook Kwon, Kwang-Rak Park, Sa-Beom Park and Jaeho Cho ()
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Jeong-Hyun Park: Department of Anatomy & Cell Biology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
Yu-Jin Choi: Department of Anatomy & Cell Biology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
Mijeong Lee: Department of Anatomy & Cell Biology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
Digud Kim: Department of Anatomy & Cell Biology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
Hyung-Wook Kwon: Department of Anatomy & Cell Biology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
Kwang-Rak Park: Department of Anatomy, School of Medicine, Keimyung University, Daegu 42601, Korea
Sa-Beom Park: Center of Biohealth Convergence and Open Sharing System, Hongik University, Seoul 04066, Korea
Jaeho Cho: Department of Orthopaedic Surgery, Chuncheon Sacred Heart Hospital, Hallym University, Chuncheon 24253, Korea

IJERPH, 2022, vol. 19, issue 16, 1-10

Abstract: The purpose of this study is to ascertain the morphological characteristics of the extensor hallucis longus (EHL) tendon variation using larger-scale dissection of Korean cadavers and to classify the types of variation along with incidence. A total of 158 feet from adult formalin-fixed cadavers (50 males, 29 females) were dissected. The morphological characteristics and measurements of the EHL tendon variants were evaluated. Three types of the EHL tendon variation were classified, wherein the most common type was Type 2 (106 feet, 67.1%), Type 3 (3 feet, 1.9%) was the rarest type, and Type 1 without accessory tendon was found in 49 feet (31.0%). Type 2K (11 feet, 7%) and Type 3K (1 foot, 0.6%) were described as new subtypes. The present study suggests morphological characteristics of the EHL tendon variation in Korean populations and high morphological variability of the EHL tendon along with the possibility of differences according to race or ethnicity and gender. Furthermore, a newly updated classification complemented by new subtypes of variation will help foot and ankle surgeons in diagnosis and surgical planning with hallux problems.

Keywords: clinical anatomy; anatomical variation; extensor hallucis longus; accessory tendon; cadaveric study (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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