Conditions

The Achilles tendon is the largest tendon in the body. It connects the upper calf muscles to the back of the heel bone. Achilles tendinitis is an injury to this tendon that causes pain in the back of the leg. Typically this injury results from inflammation of the surrounding sheath (paratenonitis), degeneration within the tendon (tendinosis), or a combination of the two.

The Achilles tendon is the largest tendon in your body. It connects the upper calf muscles to the back of the heel bone. Achilles tendinosis is a condition in which the Achilles tendon degenerates and becomes inflamed. Sometimes, it may also be called Achilles tendinitis. If you have Achilles tendinosis, your tendon can swell and become painful. This condition is common in athletes, runners, and people who have calf tightness. Achilles tendinosis may occur in the middle of the tendon (known as midsubstance Achilles tendinosis) or at the point where the tendon connects to the heel bone (known as insertional Achilles tendinosis).

Acquired adult flatfoot deformity (AAFD) is a progressive flattening of the arch of the foot that occurs as the posterior tibial tendon wears down. It has many other names such as posterior tibial tendon dysfunction, posterior tibial tendon insufficiency and dorsolateral peritalar subluxation. This problem may progress from early stages with pain along the posterior tibial tendon to advanced deformity and arthritis throughout the hindfoot (back of the foot) and ankle.

The ankle is made up of three bones:

• the tibia (shin bone), which forms the inside, front, and back of the ankle
• the fibula, which forms the outside of the ankle
• the talus, a small bone that sits between the tibia and fibula and the heel bone

The ends of these bones are called malleoli. The tibia has a medial (inside) malleoli and a posterior malleoli. The fibula forms the lateral (outside) malleoli.

An ankle sprain refers to tearing of the ligaments of the ankle. The most common ankle sprain occurs on the lateral (outside) part of the ankle. There's a good chance that while playing sports as a child or stepping on an uneven surface as an adult you sprained your ankle—some 25,000 people do it every day. It can happen in the setting of an ankle fracture (i.e., when the bones of the ankle also break). Most commonly, however, it occurs in isolation.

The pain and stiffness you feel in your feet and ankles as you age could be arthritis. If left untreated, this nagging pain can get worse over time, eventually making it difficult to walk even short distances. Severe arthritis can restrict your mobility, but with proper treatment, you can minimize the pain and maximize your quality of life.

Arthritis is a broad term for a number of conditions that destroy the workings of a normal joint. Arthritis may occur in your back, neck, hips, knees, shoulders or hands, as well as your feet and ankles. Almost half of people in their 60s and 70s have arthritis of the foot and/or ankle, but not all of them have symptoms.

Athlete’s foot (tinea pedis) is caused by several types of fungal organisms. It is quite common and usually easily treated. Two approaches, changing socks and shoes frequently and administering local medications, usually resolve infection.

If the joint that connects your big toe to your foot has a swollen, sore bump, you may have a bunion. More than one-third of women in America have bunions, a common deformity often blamed on wearing tight, narrow shoes and high heels. Bunions may be hereditary, but many are from wearing tight shoes, and 9 out of 10 bunions occur in women. Too-tight shoes also can cause foot problems such as corns, calluses, and hammertoes.

If you have a painful swollen lump on the outside of your foot near the base of your little toe, it may be a bunionette​ ("tailor's bunion"). Similar to a bunion, bunionettes can be caused by wearing shoes that are too tight. 

Chronic lateral ankle pain is recurring pain on the outer side of the ankle that often develops after an injury such as a sprained ankle. However, several other conditions also may cause chronic ankle pain.

Claw toe is a common foot deformity in which your toes bend into a claw-like position, digging down into the soles of your shoes and creating painful calluses. People often blame claw toe on wearing shoes that squeeze your toes, such as shoes that are too short or high heels. However, claw toes often are the result of nerve damage caused by diseases like diabetes or alcoholism, which can weaken the muscles in your foot. Claw toes can get worse without treatment and may become a permanent deformity over time. 

Clubfoot is an abnormal inward curving of the foot. One of the most common nonmajor birth defects, clubfoot affects a child's foot and ankle, twisting the heel and toes inward. The clubfoot, calf and leg are smaller and shorter than normal. Clubfoot is not painful, the deformity is correctable, and your baby is probably otherwise normal. Approximately one in every 1,000 newborns has clubfoot. Of those, one in three have both feet affected. Two out of three clubfoot babies are boys. Clubfoot is twice as likely if the baby’s parents or their other children also have it. Less severe infant foot problems also are common and sometimes mislabeled as clubfoot.

Every day, the average person spends several hours on their feet and takes several thousand steps. Walking puts pressure on your feet that's equivalent to one-and-a-half times your body weight. No wonder your feet hurt!

Actually, most foot problems can be blamed not on walking but on your shoes. Corns, for example, are calluses that form on the toes because the bones push up against the shoe and put pressure on the skin. The surface layer of the skin thickens and builds up, irritating the tissues underneath. Hard corns usually are located on the top of the toes or on the side of the small toe. Soft corns may resemble open sores and develop between the toes as they rub against each other.

A hammertoe is a deformity of the second, third, or fourth toe. In this condition, the toe is bent at the middle joint, so that it resembles a hammer. Hammertoes typically start as a flexible deformity but if left untreated could potentially develop into a fixed/rigid deformity that may require more aggressive surgery to correct.

Every mile you walk puts tons of stress on each foot. Your feet can handle a heavy load, but too much stress pushes them over their limits. When you pound your feet on hard surfaces playing sports or wear shoes that irritate sensitive tissues, you may develop heel pain, the most common problem affecting the foot and ankle.

A sore heel will usually get better on its own without surgery if you give it enough rest. However, many people ignore the early signs of heel pain and keep on doing the activities that caused it. When you continue to walk on a sore heel, it will only get worse and could become a chronic condition leading to more problems.

The high ankle ligaments are located above the ankle, as opposed to the more commonly injured ligaments on the outside of the ankle. These high ankle ligaments connect the tibia to the fibula. It is important to have stability between the tibia and fibula at this level because walking and running place a tremendous amount of force at this junction.

A high ankle sprain occurs when there is tearing and damage to the high ankle ligaments. These injuries are much less common than a traditional ankle sprain. 

An ingrown toenail (onychocryptosis) is a common condition, usually of the big toe, where the nail cuts into the surrounding nail bed causing an infection and pain. 

If you trim your toenails too short, particularly on the sides of your big toes, you may set the stage for an ingrown toenail. Like many people, when you trim your toenails, you may taper the corners so that the nail curves with the shape of your toe. But this technique can cause your toenail to grow into the skin of your toe. The sides of the nail curl down and dig into your skin. An ingrown toenail also can happen if you wear shoes that are too tight or too short. Any of your toenails can get ingrown, but it's most likely with your big toes.

Insertional Achilles tendinitis is a degeneration of the fibers of the Achilles tendon directly at its insertion into the heel bone. It may be associated with inflammation of a bursa or tendon sheath in the same area. 

Intoeing means that the feet curve inward instead of pointing straight ahead when walking or running. If your young child has intoeing, he or she probably will outgrow the condition naturally. You don't need special shoes, stretching exercises or other treatments. By age two most children walk with their feet pointing in the direction they are heading.

A Lisfranc injury involves the joints and/or the ligaments of the middle of the foot. The Lisfranc ligament is a ligament of the foot that runs between two bones called the medial cuneiform and the second metatarsal. The name comes from French surgeon Jacques Lisfranc de St. Martin (1790-1847), who was the first physician to describe injuries to this ligament.

There are a variety of causes for this injury such as a car accident, sports injury, or a simple slip and fall. Sometimes the injury can be mistaken for a foot sprain when X-rays do not show any broken bones. Delaying treatment can sometimes lead to more significant problems. The key for the treatment of a Lisfranc injury is proper diagnosis.

Pain in the ball of your foot, the area between your arch and the toes, is called metatarsalgia (MET-ah-tar-SAL-gee-ah). The pain usually centers on one or more of the five bones (metatarsals) in this area under the toes.

Morton's neuroma is a thickening of the tissue that surrounds the small nerve leading to the toes. It occurs as the nerve passes under the ligament connecting metatarsal bones in the forefoot. 

Morton's neuroma most frequently develops between the third and fourth toes. It often occurs in response to irritation, trauma, or excessive pressure, and is more common in women.

Osteochondral lesions, sometimes called osteochondritis dessicans or osteochondral fractures, are injuries to the talus (the bottom bone of the ankle joint) that involve both the bone and the overlying cartilage. These injuries may include softening of the cartilage layers, cyst-like lesions within the bone below the cartilage, or fracture of the cartilage and bone layers. Throughout this article, these injuries will be referred to as osteochondral lesions of the talus (OLT).

The peroneal tendons run on the outside of the ankle just behind the bone called the fibula. Peroneal tendinosis is enlargement and thickening with swelling of these tendons. This usually occurs with overuse, such as a repetitive activity that irritates the tendon over long periods of time. 

The tibia (shin bone) and the fibula are the bones of the lower leg. Pilon fractures are injuries that occur at the lower end of the tibia and involve the weightbearing surface of the ankle joint. The fibula also may be broken. These injuries were first described more than 100 years ago and remain one of the most challenging problems for orthopaedic surgeons to treat. Common causes of pilon fractures are falls from a height and car accidents.

If your first few steps out of bed in the morning cause severe pain in the heel of your foot, you may have plantar fasciitis, an overuse injury that affects the sole of the foot. A diagnosis of plantar fasciitis means you have inflamed the tough, fibrous band of tissue (fascia) connecting your heel bone to the base of your toes.

A plantar fibroma is a benign (non-cancerous) nodule that grows in the arch of the foot and usually appears between ages 20 and 60. It usually is slow-growing and often less than one inch in size. Some can grow faster and are considered plantar fibromatosis. A plantar fibroma or fibromatosis is a disease of the fibrous tissue that grows between the skin and the underlying fascia.

Plantar warts are a common viral skin infection on the bottom (plantar) side of your foot. About 10 percent of teenagers have plantar warts. Using a public shower or walking around a locker room in bare feet increase your risk for developing plantar warts.

Tendons connect muscles to bones and stretch across joints, enabling you to bend those joints. One of the most important tendons in the lower leg is the posterior tibial tendon. This tendon starts in the calf, stretches down behind the inside of the ankle, and attaches to bones in the middle of the foot. 

The posterior tibial tendon helps hold up your arch and provides support as you step off on your toes when walking. If this tendon becomes inflamed, overstretched, or torn, you may experience pain on the inner ankle and gradually lose the inner arch on the bottom of your foot, leading to flatfoot. 

Rheumatoid arthritis (RA) is a systemic disease that attacks multiple joints throughout the body. About 90 percent of people with RA eventually develop symptoms related to the foot or ankle. Usually symptoms appear in the toes and forefeet first, then in the middle and back of the foot, and finally in the ankles. Other inflammatory types of arthritis that affect the foot and ankle include gout, ankylosing spondylitis, psoriatic arthritis, and Reiter's syndrome.

The exact cause of RA is unknown but there are several theories. Some people may be more likely to develop RA because of their genes. However, it usually takes a chemical or environmental trigger to activate the disease. In RA, the body's immune system turns against itself. Instead of protecting the joints, the body produces substances that attack and inflame the joints.

Sesamoids are bones that develop within a tendon. The one most people are familiar with is in the kneecap, however they most commonly occur in the foot and hand. Two sesamoids, each about the size of a corn kernel, typically are found near the underside of the big toe.

A stress fracture is a small crack in a bone. These fractures most often are a result of overuse and can occur with an increase in activity. Stress fractures most commonly occur in the weight­bearing bones of the legs. When a bone is subjected to a new stress, such as a new exercise routine, it may not be prepared for the increased workload, and as a result, may develop a stress fracture.

A talus fracture is a broken ankle bone. The talus is the bone in the back of the foot that connects the leg and the foot. It joins with the two leg bones (tibia and fibula) to form the ankle joint and allows for upward and downward motion of the ankle.

The talus (ankle bone) sits within the ankle mortise or hinge, which is made up of the two leg bones, the tibia and fibula. There are three joints:

• the ankle, which allows the up-and-down motion of the foot with the leg
• the subtalar joint, which allows for side-to-side movement
• the talonavicular joint, which has a complicated biomechanical function that controls flexibility of the foot and the arch of the foot.

The talus has no muscular attachments and is mostly covered with cartilage, which makes injuries difficult to heal.

Nearly one-fourth of all the bones in your body are in your feet, which provide you with both support and movement. A broken (fractured) bone in your forefoot (metatarsals) or in one of your toes (phalanges) often is painful but rarely disabling. Most of the time, these injuries heal without surgery. A dislocation can be mistaken for a toe fracture, therefore obtaining X-rays to ensure a correct diagnosis is important.

Toenail fungus (onychomycosis) is an infection of the nail and sometimes surrounding tissue. It is extremely common with 20 percent of the general population and 75 percent of people over 60-years-old affected. Often, the problem is cosmetic, but many patients also experience pain. Sometimes toenail fungus can lead to more serious infections.