Origin
Tibia, fibula.
Insertion
Medial cuneiform and navicular bones.
Blood supply
Posterior tibial artery.
Nerve supply
Tibial nerve.
Action
It helps to move the foot in the inward direction (adduction) and also helps to bend the foot in downward direction (extension).
Disease/Injury
If this muscle does not work properly it may cause flat foot in adults. Football players are at more risk of getting their tibialis posterior injured due to direct blow to the muscle.
Muscle Exercise
To strengthen the tibialis posterior muscle, you can do inner ankle lift, ankle flexion, ankle circles, heel raise, or calf raise exercises.
Interesting facts
Insoles help to reduce the strain on the tibialis posterior muscle.
