Tibialis posterior muscle in human body

It is the deepest muscle of the deep posterior compartment of the lower leg.

Origin – posterior tibia, fibula, and interosseous membrane

Insertion - navicular and adjacent tarsals and metatarsals on the plantar surface.

Nerve supply – tibial nerve(l5,s1)

Blood supply- posterior tibial artery

Action- inversion of the foot, assist plantarflexion of the ankle

Palpation- tendon palpated on medial malleolus during active inversion of the foot.belly is deep to triceps sural and cannot be palpated.

“it is the key stabilizing muscle of the lower leg"

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