Surgical and Radiologic Anatomy

, Volume 41, Issue 1, pp 97–99 | Cite as

Two accessory muscles of leg: potential source of entrapment of posterior tibial vessels

  • Satheesha B. Nayak
  • Surekha Devadasa ShettyEmail author
Anatomic Variations


Accessory muscles can be found in any part of the body. In most of the regions, they go unnoticed. However, in some cases, they become symptomatic or of cosmetic concern. In this particular case, the presence of two accessory muscle slips was observed in the flexor compartment of the leg. Among the two, the first accessory muscle belly connected the lower part of flexor hallucis longus to the tibialis posterior. The muscle crossed superficial to the posterior tibial vessels. The second accessory muscle took origin from the connective tissue around the lower part of the posterior tibial vessels and was inserted to the upper part of the lateral border of tibia near the attachment of the interosseous membrane. One of the accessory muscles crossed the posterior tibial vessels, while the other surrounded them. The above accessory muscles were supplied by the branches of tibial nerve.


Posterior tibial vessels Accessory muscle slips Flexor hallucis longus and tibialis posterior muscles 



The authors deeply acknowledge the contribution of Dr. Devadasa Shetty in drawing the schematic diagram of the variant muscles.

Author contributions

SDS drafted the manuscript. SBN dissected the cadaver and prepared the figures. He also helped in reviewing the literature, proofreading the manuscript and final approval.



Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interest.


  1. 1.
    Batista JP, Del Veccio JJ, Golano P, Vega J (2015) Flexor digitorum accessories longus: importance of posterior ankle endoscpy. Case Rep Orthop 2015:823107. CrossRefPubMedPubMedCentralGoogle Scholar
  2. 2.
    Best A, Giza E, Linklater J, Sullivan M (2005) Posterior impingement of the ankle caused by anomalous muscles. A report of four cases. J Bone Jt Surg Am 87:2075–2079CrossRefGoogle Scholar
  3. 3.
    Cheung YY, Rosenberg ZS, Colon E, Jahss M (1999) MR imaging of flexor digitorum accessorius longus. Skelet Radiol 28:130–137CrossRefGoogle Scholar
  4. 4.
    Dunn AW (1965) Anomalous muscles simulating soft-tissue tumors in the lower extremities: report of three cases. J Bone Jt Surg Am 47:1397–1400CrossRefGoogle Scholar
  5. 5.
    Frazer JE, Robbins RH (1937) Manual of practical anatomy, vol 1. Bailliere, Tindall & Cox, London, pp 624–627Google Scholar
  6. 6.
    Grant JCB, Basmajian JV (1965) Grant’s method of Anatomy. 7th edn. The Williams and Wilkin’s Company, Baltimore, pp 366–367Google Scholar
  7. 7.
    Hamilton WJ, Boyd JD, Mossman HW (1978) Cardiovascular system. In: Hamilton WJ, Mossman HW (eds) Human embryology, 4th edn. Williams Wilkins, Philadelphia, pp 271–290Google Scholar
  8. 8.
    Mellado JM, Rosenberg ZS, Beltran J, Colon E (1997) The peroneocalcaneus internus muscle: MR imaging features. AJR Am J Roentgenol 169:585–588CrossRefPubMedGoogle Scholar
  9. 9.
    Schaeffer J (1942) Morris human anatomy, 11th edn. The Blakiston Division/McGraw-Hill Book Company, New York, pp 736–740Google Scholar
  10. 10.
    Nathan H, Gloobe H, Yosipovitch Z (1975) Flexor digitorum accessorius longus. Clin Orthop Relat Res 113:158–161CrossRefGoogle Scholar
  11. 11.
    Peterson DA, Stinson W, Lairmore JR (1995) The long accessory flexor muscle: an anatomical study. Foot Ankle Int 16:637–640CrossRefPubMedGoogle Scholar
  12. 12.
    Sekiya S, Kumaki K, Yamada TK, Horiguchi M (1994) Nerve supply to the accessory soleus muscle. Acta Anat (Basel) 149(2):121–127CrossRefGoogle Scholar
  13. 13.
    Kumar UA, Sharma T (2011) Rare variation of flexor digitorum longus muscle of leg—a case report. IJAV 4:69–71Google Scholar

Copyright information

© Springer-Verlag France SAS, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Melaka Manipal Medical College (Manipal Campus)Manipal Academy of Higher EducationManipalIndia

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