Piriformis action
- Piriformis action above 90
- Piriformis action below 90
- Piriformis action internal rotation
- Piriformis action origin insertion
- Piriformis action on hip
- Piriformis action gif
- Piriformis action and nerve supply
- Piriformis action video
- Piriformis action abduction
- Piriformis action on sacrum
- Piriformis action and innervation
- Piriformis action in flexion
- Action piriformis muscle
- Piriformis muscle action insertion and origin