Triceps Surae
Muscular System
The triceps surae is the calf muscle group, made up of the two heads of the gastrocnemius and the soleus, which attach to the heel via the Achilles tendon.
Components
- Gastrocnemius: superficial, with medial and lateral heads; two-joint (knee and ankle).
- Soleus: deep and broad; single-joint, crossing only the ankle.
- Plantaris: a small muscle sometimes included in this group.
Innervation
The tibial nerve (S1 and S2); the Achilles reflex assesses the S1 root.
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