Left Calcaneal Tendon (Achilles Tendon) (Tendo calcaneus sinister)
Educational content only — not medical advice.
Anatomy
The left calcaneal tendon (Achilles tendon) is the thickest and strongest tendon in the human body, formed by the union of the terminal aponeuroses of the gastrocnemius and soleus muscles (triceps surae). Descending down the lower posterior calf, it inserts into the middle facet of the posterior calcaneal tuberosity, separated from the bone by the retrocalcaneal bursa.
Clinical notes
Achilles tendon rupture occurs predominantly 2–6 cm above the calcaneal insertion within a hypovascular watershed zone; patients report a sensation of being kicked in the calf, accompanied by a palpable defect and an absent plantarflexion response on the Thompson calf squeeze test.
Related structures
Educational references
FAQ
What is the role of the Left Calcaneal Tendon (Achilles Tendon)?
The left calcaneal tendon (Achilles tendon) is the thickest and strongest tendon in the human body, formed by the union of the terminal aponeuroses of the gastrocnemius and soleus muscles (triceps surae). Descending down the lower posterior calf, it inserts into the middle facet of the posterior calcaneal tuberosity, separated from the bone by the retrocalcaneal bursa.
Why is the Left Calcaneal Tendon (Achilles Tendon) clinically important?
Achilles tendon rupture occurs predominantly 2–6 cm above the calcaneal insertion within a hypovascular watershed zone; patients report a sensation of being kicked in the calf, accompanied by a palpable defect and an absent plantarflexion response on the Thompson calf squeeze test.
Source & license
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