Origin: Anterior surface of lateral process of sacrum and gluteal surface of ilium at the margin of the greater sciatic notch
Insertion: Superior border of greater trochanter
Action: Lateral rotator of the hip joint; also helps abduct the hip if it is flexed
Innervation: Piriformis nerve (L5, S1, S2)
Arterial Supply: Superior and inferior gluteal and internal pudendal 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