Anat Biol Anthropol.  2021 Jun;34(2):53-56. 10.11637/aba.2021.34.2.53.

Variations for Incomplete Formation of the Plantaris Muscle: A Case Report

  • 1Department of Anatomy, Keimyung University School of Medicine
  • 2Department of Orthopedic Surgery, Chuncheon Sacred Heart Hospital, Hallym University of Medicine
  • 3Department of Anatomy & Cell Biology, Graduate School of Medicine, Kangwon National University


We present a case of variation of origin and tendon disappearance in a 58-year-old Korean male cadaveric specimen in our routine dissections. First, the origin of the plantaris muscle is slightly medial above the lateral articular eminence of the lateral head of the gastrocnemius muscle. That is, compared to the normal origin, it started from the infero-medially side. Second, we observed a variation in which the tendon thins and disappears without being fused to the gastrocnemius or soleus muscle at the proximal 1/3 of the calf during the normal course. The disappearance of the plantaris tendon during the course is extremely rare. It would be an anatomical basic data that could be applied during tendon transplantation clinically or that can find the developmental sequence of plantaris muscle.


Plantaris muscle; Origin; Variation; Korean
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