Podiatry is a branch of medicine that deals with the study, diagnosis, and treatment of foot and ankle conditions. There are various subdivisions in podiatry; biomechanics is one of them. Biomechanics is the way in which the bones, muscles, and joints of the feet and lower limb interact with each other.

Our feet play crucial roles in the way we move, and it is rare to have feet that are completely symmetrical. Common biomechanical issues include high or low arches or uneven leg heights. Excessive pronation often leads to fallen arches, or flat feet, and is a common cause of running injuries. People whose feet are over-pronated tend to have flexible and unstable feet. Pain is usually experienced during walking and running.

At times, people may be able to adapt to these abnormalities without any difficulties, but in other cases, these issues can cause a great deal of pain. This pain occurs because the joints, muscles, ligaments, and tendons are put under an excess amount of stress during movement. Common symptoms of biomechanical problems stemming from the feet include hip pain, knee pain, leg cramps, ankle pain, lower back pain, weak ankles, tripping, heel pain, Achilles pain, and shin splints.

Many biomechanical issues can be treated with orthotics. Orthotics are shoe insoles that are used to help control the way the foot operates.  They can provide relief from foot pain, heel pain, and knee pain. Depending on your specific case, you may need to purchase over-the-counter orthotics or custom orthotics to fit your feet. Your podiatrist will be able to prescribe the perfect orthotic for your feet to help you walk around with ease.

Gait is defined as the way we move our bodies from one point to another. This is usually done by either walking or running. Gait analysis is a method used to assess the way we walk or run to highlight biomechanical abnormalities. Gait analyses are a great way to take a detailed look at how you walk and how your foot moves while you walk. An examination of the feet will help your podiatrist understand why you are suffering pain in other parts of your body.

Diabetics must be wary of all wounds, regardless of depth or size. Diabetes, a chronic disease in which the body cannot properly use glucose the way it normally would, causes various complications that make wounds difficult to heal. Nerve damage or neuropathy will cause diabetics to have trouble feeling the pain of a blister or cut until the condition has significantly worsened or become infected. A diabetic’s weakened immune system can make even the most minor of wounds easily susceptible to infection. Diabetics are also more prone to developing narrow, clogged arteries, and are therefore more likely to develop wounds.

Wounds should be taken care of immediately after discovery, as even the smallest of wounds can become infected if enough bacteria build up within the wound.  To remove dirt, wounds should be first rinsed under running water only. Soap, hydrogen peroxide, or iodine can irritate the injury and should be avoided. To prevent infection, apply antibiotic ointment to the wound and cover it with a bandage. The bandage should be changed daily. The skin around the wound may be cleaned with soap.

To prevent further exacerbation, see a doctor—especially if you have diabetes. Minor skin conditions can become larger problems if not properly inspected. As the wound heals, make sure to avoid applying pressure to the affected area.

Sever’s disease, also known as calcaneal apophysitis is a common bone disorder that occurs during childhood. The disease is defined as an inflammation of the growth plate in the heel. When a child has a growth spurt, his heel bone grows faster than the muscles, tendons, and ligaments in his leg. This disease is a result of overuse. The people who are most likely to be affected by this disease are children who are in a growth spurt, especially boys who are from the ages of 5 to 13 years old. 60% of children with Sever’s disease have both heels involved.

Symptoms of this disease are heel pain that intensifies during running and jumping activities. The pain is typically localized to the posterior part of the heel. Symptoms may be severe, and they can easily interfere with daily activities. Children who play soccer, baseball, and basketball are more likely to develop Sever’s disease.

Your doctor will diagnose your child based on his or her symptoms, x-rays are generally not helpful in diagnosing this disease. Your doctor may examine both heels and ask your child questions about his or her activity level in sports. Your doctor may then use the squeeze test on your child’s heel to see if there is any pain. Nevertheless, some doctors might still use x-rays to rule out any other issues such as fractures, infections, and tumors.

Sever’s disease can be prevented by maintaining good flexibility while your child is growing. Another prevention method is to wear good-quality shoes that have firm support and a shock-absorbent sole. Sever’s disease can be treated by ceasing any activity that causes heel pain. You should apply ice to the injured heel for 20 minutes 3 times a day. Additionally, orthotics should be used for children who have high arches, flat feet, or bowed legs.

If you suspect your child has Sever’s disease, you should make an appointment with your podiatrist to have his or her foot examined. Your doctor may recommend nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen or naproxen to relieve pain. In more severe cases, your child may need a cast to rest his or her heel. Fortunately, Sever’s disease does not cause long-term foot problems. After treatment, your child should start to feel better within two weeks to two months.

Sesamoiditis is a condition that affects the joint that is just behind the big toe in the area known as the ball of the foot. It is most common in younger people and people who have just begun an exercise program. Since the sesamoid bones are like a pulley controlling the big toe, they can rub against each other and cause a gradual onset of pain. Pain may also be caused by the inflammation of tendons surrounding the bones. If ignored, sesamoiditis can lead to other, more serious problems such as severe irritation and fractures of the bones.

The cause of sesamoiditis is sudden increase in activity. The ball of your foot acts as a springboard to help you lift off when you are jogging or running. Sudden increase in the use of these bones or the tendon that controls them can cause irritation. The tendon then begins to develop inflammation and the joint begins to swell. People with smaller, bonier feet or those with a high arch are typically more susceptible to this condition.

Sesamoiditis is fairly simple to diagnose since the symptoms have a gradual onset rather than a sudden impact. The symptoms begin with slight irritation around the joint shortly after the increase in activity. The discomfort eventually turns to pain with light swelling and possibly redness. Although redness or bruising are rare, this may be a symptom. After each session of exercising, the aggravated joint becomes more irritated and increases into a very intense throbbing.

Treatment for sesamoiditis can vary depending on the severity of the situation. However, treatment is almost always approached in a noninvasive way. For a case that is just beginning the doctor may recommend a very strict rest period that will limit the activity allowed on the joint. If you must be active, a recommendation for as modified shoe or insole, along with bandaging and immobilizing the big toe will be made to ensure that pressure is not placed on the joint. For severe cases, it is typically recommended that the joint and the big toe be completely immobilized to allow adequate time to heal. Ice and an over the counter anti-inflammatory may can help with the pain and discomfort while you are at rest.

When you return to your regular exercise activities, it is recommended that you use an insole that will allow even distribution of impact to your entire foot, rather than just the balls of your foot. This will prevent further aggravation of the injury.

Each foot, on average, has about 250,000 eccrine sweat glands that produce half a pint of sweat each day. Sweating is a natural and important bodily function. It regulates the body’s temperature by cooling the skin so that it does not overheat.  In individuals with hyperhidrosis, the sympathetic nervous system works in "overdrive", producing far more sweat than what is required. People with plantar hyperhidrosis experience an excess amount of sweat on their feet. It is estimated that 2% to 3% of all Americans suffer from some form of hyperhidrosis. This condition is often caused by neurologic, endocrine, infectious, and other systemic disease. Other factors that may trigger the condition are heat and emotions.

People with hyperhidrosis may notice an overabundance of sweat on their feet, along with a strong odor. The feet may also have a wet appearance coupled with infections such as athlete’s foot or toenail fungus. The sweat may even appear in low temperatures, such as during the winter months. People with plantar hyperhidrosis often need to change their socks several times throughout the day.

The specific cause of hyperhidrosis is unknown, and many believe it may be caused by over-activity. However, others believe the condition is genetic.  Caffeine and nicotine are known to cause excitement and nervousness which are two emotions that may make the condition worse.

If you are looking to treat your hyperhidrosis the most important thing you should do is wash your feet every day.  You may even need to wash your feet twice a day, if necessary.  You should also make sure you are wearing the right socks. Wool and cotton socks are both known to be good for ventilation, meaning they allow the feet to breathe. You should avoid socks made from nylon which trap moisture and lead to sogginess. Other common treatment options are over-the-counter antiperspirants that contain a low dose of metal salt.  In some cases, prescription strength antiperspirants that contain aluminum chloride hexahydrate may be necessary. In severe cases, surgery may be required.

Untreated hyperhidrosis can easily lead to complications.  Some complications that may arise from the disorder include nail infections, warts, and bacterial infections.  Consequently, it is important that you seek treatment from your podiatrist if you suspect that you may have plantar hyperhidrosis.