Which muscle inserts on the calcaneus and originates from the head of the fibula and tibia?

Which muscle inserts on the calcaneus and originates from the head of the fibula and tibia?

• A. Gastrocnemius
• B. Fibularis Longus
• C. Soleus
• D. Tibialis Anterior

Answer: (C)

The muscle that fits this description is the soleus. It originates from the posterior surface of the tibia and the head and posterior surface of the fibula, and it inserts into the calcaneus via the Achilles tendon. This combination—fibula and tibia head as origins with calcaneal insertion—is what identifies it. The gastrocnemius also inserts on the calcaneus, but it originates from the femur’s condyles, not from the fibula head and tibia, so it doesn’t match the stated origins. The other muscles listed have origins or insertions that lie elsewhere (fibularis longus on the fibula and foot bones, tibialis anterior on the tibia to the dorsal foot), so they don’t fit the description.

The muscle that fits this description is the soleus. It originates from the posterior surface of the tibia and the head and posterior surface of the fibula, and it inserts into the calcaneus via the Achilles tendon. This combination—fibula and tibia head as origins with calcaneal insertion—is what identifies it. The gastrocnemius also inserts on the calcaneus, but it originates from the femur’s condyles, not from the fibula head and tibia, so it doesn’t match the stated origins. The other muscles listed have origins or insertions that lie elsewhere (fibularis longus on the fibula and foot bones, tibialis anterior on the tibia to the dorsal foot), so they don’t fit the description.