Plantaris Muscle Anatomy Study
Origin: Lateral supracondylar ridge of the femur above the lateral head of the gastrocnemius.
Insertion: Medial aspect of the posterior surface of the calcaneus, medial to the Achilles tendon.
Action: Assists with flexion of the knee. Assist with plantarflexion of the foot at the ankle
Innervation: Tibial Nerve (S1,2)
Blood Supply: Popliteal Artery
- The plantaris muscle is not a prime mover and does not have a primary action
1. Assists with flexion of the knee
- Agonists: Biceps Femoris, Semitendinosus, Semimembranosus
- Antagonists: Vastus Lateralis, Vastus Medialis, Vastus Intermedius, Rectus Femoris
2. Assists with plantarflexion of the foot at the ankle
- Agonists: Gastrocnemius, Soleus
- Antagonists: Tibialis Anterior
For more information see: Plantaris Muscle: Pain Behind The Knee
Out of the scores of books in my office Basic Clinical Massage Therapy is by far the most referenced book in my library. The musculoskeletal system is overlaid on human models allowing you to learn the precise location, origin and insertions of each muscle. The models are pictured in various poses throughout the book which also helps you visualize muscles in motion and their actions relationship with the skeletal structure and other muscles. Though it is written for massage therapists, it is an excellent book for anyone who wants to learn about the muscular system. MT’s will benefit from recommended treatments for each muscle.