Internal Oblique Muscle
Tibialis Posterior Muscle – Attachments, Actions & Innervation
Attachments of Tibialis Posterior Muscle: Origin & Insertion
Origin: (proximal attachments):
a. Lateral portion of posterior, proximal tibia.
b. Interosseous membrane.
c. Medial portion of posterior, proximal half of fibula.
Insertion: (distal attachments):
Navicular tuberosity, cuneiforms, cuboid, 2-4 metatarsals, and sustentaculum tali of calcaneus.
Actions of Tibialis Posterior Muscle on the foot:
a. Inverts foot.
b. Plantar flexes foot.
Nerve to Muscle and its Spinal Segment:
Tibial nerve (L5, S1).