Posterior tibial tendon dysfunction, also known as acquired flatfoot, results when the tendon at the back of the ankle is inflamed or torn. It is a progressive condition that can eventually lead to a fallen arch or flatfoot. Advanced cases, or those that do not respond to non-surgical treatments, may require surgery. There are various surgical procedures for posterior tibial tendon dysfunction, and it is common to need more than one.
Flat Foot Symptoms
Posterior tibial tendon dysfunction most frequently develops in one foot, but it can affect both feet. Symptoms are usually progressive, meaning they get worse over time. You may first notice pain, redness and swelling along the inside of your ankle and foot. As the arch in your foot flattens, you may experience pain in your outer and midfoot, weakness and the inability to stand on your toes.