Origin: Posterior aspect of fibular head, upper 1/4 - 1/3 of posterior surface of fibula, middle 1/3 of medial border of tibial shaft, and from posterior surface of a tendinous arch spanning the two sites of bone origin
Insertion: Eventually unites with the gastrocnemius aponeurosis to form the Achilles tendon, inserting on the middle 1/3 of the posterior calcaneal surface
Action: Powerful plantar flexor of ankle
Innervation: Tibial nerve (S1, S2)
Arterial Supply: Posterior tibial, peroneal, and sural arteries
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Lower Extremity
- Adductor Brevis
- Adductor Longus
- Adductor Magnus
- Biceps Femoris – Long Head
- Biceps Femoris – Short Head
- Extensor Digitorum Longus
- Extensor Hallucis Longus
- Flexor Digitorum Longus
- Flexor Hallucis Longus
- Gastrocnemius
- Gluteus Maximus
- Gluteus Medius
- Gluteus Minimus
- Gracilis
- Iliacus
- Inferior Gemellus
- Obturator Externus
- Obturator Internus
- Pectineus
- Peroneus Brevis
- Peroneus Longus
- Peroneus Tertius
- Piriformis
- Plantaris
- Popliteus
- Psoas
- Quadratus Femoris
- Rectus Femoris
- Sartorius
- Semimembranosus
- Semitendinosus
- Soleus
- Superior Gemellus
- Tensor Fascia Lata
- Tibialis Anterior
- Tibialis Posterior
- Vastus Intermedius
- Vastus Lateralis
- Vastus Medialis