Tibialis posterior
Body region：Foot
Collapsed arch, pain behind the inner ankle
Function
Originates from the back of the tibia and fibula and inserts at the navicular and other bones behind the inner ankle. Supports the arch and inverts the foot.
Common causes
Flat feet, long periods of standing or running, and shoes that give poor arch support.
Massage and stretching
- Thumb pushes along the back-inner shin
- Arch-strengthening exercise
Related acupoints
- Taixi (KI3)：Depression between the inner ankle tip and the Achilles tendon
- Sanyinjiao (SP6)：About 3 cun above the inner ankle tip, on the back edge of the tibia (avoid during pregnancy)
Related meridians
Kidney Meridian of Foot-Shaoyin、Spleen Meridian of Foot-Taiyin
When to see a doctor：Swelling after an ankle injury or inability to bear weight: see a doctor.