Surgical and Radiologic Anatomy

, Volume 39, Issue 12, pp 1343–1347 | Cite as

The accessory tendon of extensor hallucis longus muscle and its correlation to hallux valgus deformity: a cadaveric study

  • K. Natsis
  • G. A. Konstantinidis
  • P. D. Symeonidis
  • T. Totlis
  • N. Anastasopoulos
  • P. Stavrou
Original Article



The accessory tendon (AT) of the extensor hallucis longus (EHL) is a common anatomic variation, whose clinical significance remains debatable. The purpose of this study was to investigate the incidence and morphology of accessory EHL tendons in cadavers and to examine any possible correlation to the occurrence and severity of hallux valgus (HV) deformity.


We examined any possible correlation between the AT presence and the cadavers’ age and the HV deformity in 98 female adult cadaveric feet. The HV and intermetatarsal (IMA) angles were measured and compared with the relative angle between the primary EHL tendon and AT as well as the length of the AT.


AT was present in 26.5% and HV deformity existed in 36.7% of all feet. There was a high prevalence (65.4%) of HV deformity in feet with AT, but the HV angle and IMA were similar in feet with AT and without AT. No significant correlations were found between AT morphological characteristics and the cadavers’ age or the HV angle and IMA.


In conclusion, there is a high incidence of HV deformity in cadaveric feet with AT of EHL (almost 2/3), but there is no correlation between the severity of the HV deformity and the presence or characteristics of the AT.


Extensor hallucis longus muscle Accessory tendon Hallux abductovalgus Tendon imbalance Hallux valgus Anatomical variations 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflicts of interest.


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Copyright information

© Springer-Verlag France 2017

Authors and Affiliations

  • K. Natsis
    • 1
  • G. A. Konstantinidis
    • 1
    • 2
  • P. D. Symeonidis
    • 3
  • T. Totlis
    • 1
  • N. Anastasopoulos
    • 1
  • P. Stavrou
    • 2
  1. 1.Department of Anatomy and Surgical Anatomy, School of Medicine, Faculty of Health SciencesAristotle University of ThessalonikiMacedoniaGreece
  2. 2.The Adelaide Orthosports ClinicADLAustralia
  3. 3.1st University Orthopaedic Clinic, Faculty of Medicine, School of Health ScienceAristotle University of ThessalonikiMacedoniaGreece

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