An accessory navicular is an extra bone on the inner side of your foot. It's connected to the bone we call the "navicular," which helps form the foot's arch. Most people don't have an accessory navicular, and you can have one and not know it. But in some people, this extra bone causes problems.

This is a collapse of your foot's arch. It happens over time, usually in just one foot but sometimes in both. As your arch collapses, the bones of your foot may gradually shift out of alignment. This can cause pain and other problems.

This condition is an abnormally high arch of the foot that results in an excessive amount of body weight being directed to the ball and heel of the foot. Cavus foot can be congenital or acquired, may develop at any age, and can affect one or both feet.

This is a problem that some babies are born with. One or both feet are turned inward and downward. A clubfoot is hard to push into the correct position.

This is an injury of the middle part of the foot, where the metatarsal bones of the forefoot connect to the cuneiform bones of the midfoot. It can involve torn ligaments, broken bones or a combination of both. And, it can involve more than one joint.

The ball of your foot absorbs a lot of stress when you run and jump. It can become injured and sore. We call this pain "metatarsalgia." The pain can keep you from exercising and from playing sports. And it can be a problem for active people.

This condition is a thickening of the nerve sheath that surrounds a nerve in the ball of the foot. It most commonly develops between the third and fourth toes. It also commonly occurs between the second and third toes.

This condition is an injury to the navicular, one of the tarsal bones of the midfoot. This type of injury is common in athletes, particularly those who participate in high-impact sports that require jumping, sprinting and sudden directional changes. Track and field athletes are particularly susceptible.

Plantar fasciitis is an irritation of the plantar fascia. This thick band of connective tissue travels across the bottom of the foot between the toes and the heel. It supports the foot's natural arch. It stretches and becomes taut whenever the foot bears weight.

This is a problem with a tendon supporting the foot's arch. We call it the posterior tibial tendon. It connects the calf muscle to the bones on the inner side of the foot. With posterior tibial tendon dysfunction, the tendon becomes inflamed or torn. Your arch becomes unstable, and it may collapse.