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Case report
Agenesis of the long head of the biceps brachii tendon: ignored variations of the anatomy and the next tendon to disappear?
  1. Aurélien Traverso1,2,
  2. Krzysztof Piasecki3,
  3. Nicolas Gallusser4 and
  4. Alain Farron2,4
  1. 1Department of Orthopaedics and Traumatology, EHC, Morges, Vaud, Switzerland
  2. 2University of Lausanne, Lausanne, Switzerland
  3. 3Department of Orthopaedics and Traumatology, Hôpital Neuchâtelois, Neuchatel, Switzerland
  4. 4Department of Orthopaedics and Traumatology, CHUV, Lausanne, Vaud, Switzerland
  1. Correspondence to Dr Aurélien Traverso; auremt{at}gmail.com

Abstract

Bilateral agenesis of the long head of the biceps brachial tendon (LHB) is a very rare variation of the anatomy. We report a case of an 18-year-old man with bilateral agenesis of the long head of the biceps brachii tendon. We present initial findings, radiographical examinations and the follow-up of an unusual entity. Diagnosis of agenesis of the LHB can be challenging especially in cases of traumatic shoulder pain. It is not a very known entity because of its rareness. However, it could be associated with other congenital anomalies. The absence of the LHB is easily ignored in the diagnostic process. Clinical examination should be a pitfall, radiological examination is helpful to confirm the suspicion of LHB absence. MRI is often the first choice, although ultrasonography is cheaper and much easier to access and it is an excellent tool to visualise this anatomic variation with empty or shallow intertubercular groove.

  • musculoskeletal and joint disorders
  • emergency medicine
  • trauma
  • orthopaedics
  • radiology
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Footnotes

  • Contributors AT: discuss planning and conception. KP: follow-up and writing. NG: research and corrections. AF: conception and design.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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