Anatomy and Cell Biology

Korean Association of Anatomists (대한해부학회)
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Concomitant variations of the tibialis anterior, and extensor hallucis longus, and extensor hallucis brevis muscles

  • Jenilkumar Patel (Tulane University School of Medicine) ;
  • Graham Dupont (Tulane University School of Medicine) ;
  • Joho Katsuta (Katsuta Osteopathic Clinic) ;
  • Joe Iwanaga (Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine) ;
  • Lukasz Olewnik (Department of Anatomical Dissection and Donation, Medical University of Lodz) ;
  • R. Shane Tubbs (Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine)
  • Received : 2022.01.12
  • Accepted : 2022.07.07
  • Published : 2023.03.31
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Abstract

Tibialis anterior (TA) muscle originates from the lateral surface of tibia and its tendon attaches to the medial cuneiform and base of the first metatarsal. The TA muscle is responsible for both dorsiflexion and inversion of the foot. We present a case of bilateral TA muscle variations that diverge slightly from the current classification systems of this muscle. Recognizing variations such as these may be important for anatomists, surgeons, podiatrists, and physicians. Following routine dissection, an accessory tendon of the TA muscle was found on both sides. Accessory tendons of the extensor hallucis longus and extensor hallucis brevis joined to form a common tendon on both sides. We believe that this unique case will help further the classification systems for the tendons of the TA and also be informative for clinical anatomists as well as physicians treating patients with pathology in this region.

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Acknowledgement

The authors sincerely thank those who donated their bodies to science so that anatomical research could be performed. Results from such research can potentially increase mankind's overall knowledge that can then improve patient care. Therefore, these donors and their families deserve our highest gratitude.

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