Posterior Tibialis Tendon Tear

The posterior tibialis tendon is located at the back of the leg, passes underneath the inside knob of the ankle and then inserts onto a small bone in the arch of the foot, attaching the calf muscle to the bones of the inside of the foot. It gives support to the arch of the foot and stability when walking. A tear to this tendon is most common due to a sports injury or in people with poor lower limb alignment.