Natsis K, Konstantinidis G A, Symeonidis P D, Totlis T, Anastasopoulos N, Stavrou P
Department of Anatomy and Surgical Anatomy, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124, Macedonia, Greece.
The Adelaide Orthosports Clinic, Level 3/143 Hutt Street, ADL, Australia.
Surg Radiol Anat. 2017 Dec;39(12):1343-1347. doi: 10.1007/s00276-017-1881-4. Epub 2017 Jun 10.
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.
拇长伸肌副腱（AT）是一种常见的解剖变异，其临床意义仍存在争议。本研究旨在调查尸体中拇长伸肌副腱的发生率和形态，并探讨其与拇外翻（HV）畸形的发生及严重程度之间是否存在关联。
我们在98例成年女性尸体足部中，研究了拇长伸肌副腱的存在与尸体年龄以及拇外翻畸形之间的任何可能关联。测量了拇外翻和跖间角（IMA），并与拇长伸肌主腱和副腱之间的相对角度以及副腱的长度进行比较。
所有足部中，拇长伸肌副腱的存在率为26.5%，拇外翻畸形的发生率为36.7%。有拇长伸肌副腱的足部中拇外翻畸形的患病率较高（65.4%），但有副腱和无副腱的足部中拇外翻角度和跖间角相似。未发现拇长伸肌副腱的形态特征与尸体年龄、拇外翻角度和跖间角之间存在显著相关性。
总之，有拇长伸肌副腱的尸体足部中拇外翻畸形的发生率较高（近2/3），但拇外翻畸形的严重程度与拇长伸肌副腱的存在或特征之间无相关性。
