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Extensor pollicis et indicis communis or extensor indicis radialis muscle

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Abstract

Anatomical variations of the fingers extensor tendons are not uncommon and have been described by several authors. Participation of intertendinous band of fascia in this kind of variation can change muscle functionality. However, this element is scarcely described in the literature. In this case report, we describe the finding of an accessory tendon located between the extensor digitorum communis muscle tendon, destined for the index finger, and the extensor pollicis longus tendon. In an anatomical analysis, we observed a connection between the radial portion of the accessory tendon and the ulnar portion of the extensor pollicis longus tendon by intertendinous fascia. This finding corresponds anatomically to the supernumerary muscle denominated extensor indicis radialis, but due to the fascial connections observed with the extensor pollicis longus, this muscle would behave functionally as a supernumerary muscle denominated extensor pollicis et indicis communis. This report suggests that participation of fascia in muscular variation in this anatomical segment is essential to establish the correct morpho-functional denomination of muscular variants.

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References

  • Cauldwell EW, Anson BJ, Wright RR (1943) The extensor indicis proprius muscle: a study of 263 consecutive specimens. Q Bull Northwest Univ Med School 17:267–269

    Google Scholar 

  • Celik S, Bilge O, Pinar Y, Govsa F (2008) The anatomical variations of the extensor tendons to the dorsum of the hand. Clin Anat 21:652–659

    Article  PubMed  Google Scholar 

  • De Vilhena H (1933) Le muscle surnuméraire extenseur commun du pouce et de l’index. C R Assoc Anatom 28:685–702

    Google Scholar 

  • Godwin Y, Ellis H (1992) Distribution of the extensor tendons on the dorsum of the hand. Clin Anat 5:394–403

    Article  Google Scholar 

  • Gonzalez MH, Weinzweig N, Kay T, Grindel S (1996) Anatomy of the extensor tendons to the index finger. J Hand Surg 21:988–991

    Article  CAS  Google Scholar 

  • Komiyama M, Nwe TM, Toyota N, Shimada Y (1999) Variations of the extensor indicis muscle and tendon. J Hand Surg Br 24:575–578

    Article  PubMed  CAS  Google Scholar 

  • Rubin G, Wolovelsky A, Rinott M, Rozen N (2011) Anomalous course of the extensor pollicis longus: clinical relevance. Ann Plast Surg 67:489–492

    Article  PubMed  CAS  Google Scholar 

  • Wood J (1864) On some varieties in human myology. Proc R Soc Lond 13:229–303

    Google Scholar 

  • Yoshida Y (1995) Anatomical studies on the extensor pollicis et indicis accessorius muscle and the extensor indicis radialis muscle in Japanese. Okajimas Folia Anat Jpn 71:355–363

    PubMed  CAS  Google Scholar 

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Conflict of interest

All authors have no conflicts of interest or financial ties to disclose.

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Authors and Affiliations

  1. Anatomy Unit, Biomedical Department, University of Antofagasta, Av. Universidad de Antofagasta s/n (Campus Coloso), 1240000, Antofagasta, Chile

    Daniel Casanova Martínez & Iván Valdivia Gandur

  2. Human Anatomy Unit, Laboratory of Arthroscopic and Surgical Anatomy, Department of Pathology and Experimental Therapeutics, University of Barcelona, c/Feixa Llarga s/n (Campus Bellvitge), 08907, L’Hospitalet de Llobregat, Barcelona, Spain

    Pau Golanó

  3. Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 3471 Fifth Avenue, Suite 1011, Pittsburgh, PA, 15213, USA

    Pau Golanó

Authors
  1. Daniel Casanova Martínez
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  2. Iván Valdivia Gandur
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  3. Pau Golanó
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Correspondence to Daniel Casanova Martínez.

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Casanova Martínez, D., Valdivia Gandur, I. & Golanó, P. Extensor pollicis et indicis communis or extensor indicis radialis muscle. Anat Sci Int 88, 153–155 (2013). https://doi.org/10.1007/s12565-012-0164-8

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  • DOI: https://doi.org/10.1007/s12565-012-0164-8

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