Anomalous insertion of the pectoralis minor tendon at the greater tuberosity

  • Fernando Ruiz SantiagoEmail author
  • Amalia Ruiz Tristán
  • Pryest Butani
Case Report


We present a case of ectopic insertion of the whole tendon of the pectoralis minor muscle associated with impingement syndrome. Based on this case, we performed a review of the literature focused on the association between this ectopic tendon insertion and anterior shoulder pain.


Pectoralis minor muscle Ultrasonography Shoulder 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest to disclose.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.


  1. 1.
    Lee KW, Choi YJ, Lee HJ, Gil YC, Kim HJ, Tansatit T, Hu KS (2018) Classification of unusual insertion of the pectoralis minor muscle. Surg Radiol Anat 40(12):1357–1361. CrossRefPubMedGoogle Scholar
  2. 2.
    Schwarz GM, Hirtler L (2019) Ectopic tendons of the pectoralis minor muscle as cause for shoulder pain and motion inhibition—explaining clinically important variabilities through phylogenesis. PLoS One 14(6):e0218715. CrossRefPubMedPubMedCentralGoogle Scholar
  3. 3.
    Le Double A (1987) Traité des variations du système musculaire de l’homme et de leur signification au point de vue de l’anthropologie zoologique. Schleicher frères, ParisGoogle Scholar
  4. 4.
    Lee CB, Choi SJ, Ahn JH, Ryu DS, Park MS, Jung SM et al (2014) Ectopic insertion of the pectoralis minor tendon: inter-reader agreement and findings in the rotator interval on MRI. Korean J Radiol 15(6):764–770. CrossRefPubMedPubMedCentralGoogle Scholar
  5. 5.
    Homsi C, Rodrigues MB, Silva JJ, Stump X, Morvan G (2003) Anomalous insertion of the pectoralis minor muscle: ultrasound findings. J Radiol 84(9):1007–1011PubMedGoogle Scholar
  6. 6.
    Moineau G, Cikes A, Trojani C, Boileau P (2008) Ectopic insertion of the pectoralis minor: implication in the arthroscopic treatment of shoulder stiffness. Knee Surg Sports Traumatol Arthrosc 16(9):869–871. CrossRefPubMedGoogle Scholar
  7. 7.
    Low S, Tan S (2010) Ectopic insertion of the pectoralis minor muscle with tendinosis as a cause of shoulder pain and clicking. Clin Radiol 65(3):254–256. CrossRefPubMedGoogle Scholar
  8. 8.
    Burkhart SS, Morgan CD, Kibler WB (2003) The disabled throwing shoulder: spectrum of pathology Part III: The SICK scapula, scapular dyskinesis, the kinetic chain, and rehabilitation. Arthroscopy 19(4):404–420. CrossRefPubMedGoogle Scholar

Copyright information

© Società Italiana di Ultrasonologia in Medicina e Biologia (SIUMB) 2019

Authors and Affiliations

  1. 1.Department of Radiology, Traumatology HospitalUniversity Hospital Virgen de las NievesGranadaSpain
  2. 2.Department of PsychiatryHospital 12 de OctubreMadridSpain
  3. 3.Department of RadiologyNorth Tyne Side General HospitalNorth ShieldsUK

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