Primary Actions of the Plantaris Muscle
Because of its size and location, the plantaris muscle is not a primary mover.
Secondary Actions of the Plantaris Muscle
1. Assists with flexion of the knee
- Biceps Femoris
- Vastus Lateralis
- Vastus Medialis
- Vastus Intermedius
- Rectus Femoris
Gracilis, sartorius, popliteus, and gastrocnemius also assist with flexion of the knee.
2. Assists with plantarflexion of the foot at the ankle
Antagonists: Tibialis Anterior
Tibialis posterior, peroneus longus, flexor hallucis longus, and flexor digitorum longus also assist with plantarflexion of the foot at the ankle.
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