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Tibialis Posterior Muscle – Attachments, Actions & Innervation

image descriptionTibialis Posterior Muscle

Tibialis Posterior Muscle attached to the lower limb with other muscles
Tibialis Posterior Muscle attached to the lower limb with other muscles
Tibialis Posterior Muscle attached to the lower limb with other muscles
Tibialis Posterior Muscle attached to the lower limb alone
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image descriptionAttachments 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.

Tibialis Posterior Muscle attached to the lower limb with other muscles
Tibialis Posterior Muscle attached to the lower limb alone
Tibialis Posterior Muscle - Origin and Insertion
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Actions of Tibialis Posterior Muscle on the foot:

a. image descriptionInverts foot.

Foot inversion1
Foot inversion2
Foot inversion3
Foot inversion4
Foot inversion5

b. image descriptionPlantar flexes foot.

Plantar Flexion (1)
Plantar Flexion (2)
Plantar Flexion (3)
Plantar Flexion (4)
Plantar Flexion (5)

Nerve to Muscle and its Spinal Segment:

Tibial nerve (L5, S1).

Overview:

Tibialis Posterior Muscle - Test yourself
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Test yourself while observing the Tibialis Posterior Muscle
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