Running may seem like a simple to do. However, running is actually a complex movement that puts stress on the ligaments, bones, and joints of the body.  Selecting the correct running shoe is important for increasing performance and avoiding risk of injury.  Running shoes should be selected based on your foot type.  Considerations such as trail versus road shoes are important. Your foot type dictates the degree of cushioning, stability and motion control you require.  The most accurate way to learn your foot type is to visit a local shop that specializes in running shoes.  Professionals can measure your arch type, stride and gait and help you with your shoe needs.

The design of running shoes is created around the idea of pronation.  Pronation is the natural rolling movement of your ankle from the outside to inside when your foot strikes the ground.  If you run properly you strike the ground on the outside of your heel and roll in the direction of your big toe before pushing off once more.  Pronation is beneficial because it assists the lower half of your body in absorbing shock and storing energy.  Those considered neutral runners pronate correctly and do not need running shoes that help correct their form.  Neutral runners can choose from a wide variety of shoes, including barefoot or minimal types.  However, those who have arch problems or who adopt an incorrect form while running may experience too much or too little pronation. They may require running shoes that offer additional support.

Those who overpronate experience an over-abundance of ankle rolling.  Even while standing, those who severely overpronate display ankles that are angled inward.  It is not uncommon for them to have flat feet or curved legs.  The tendency to overpronate may cause many injuries.  Areas that tend to become injured are the knees, ankles, and Achilles tendon.  If you find that you have a tendency to overpronate, you should look at shoes that provide extra stability and motion-control.  Motion-control shoes are straight and firm. Shoes of this type do not curve at the tip.  The restricted flexibility along the middle of the shoe prohibits the foot from rolling too far inward as your foot strikes the ground.

A less common problem is underpronation.  Underpronation, also called supination, is when the feet are unable to roll inward during landing.  Those who underpronate have feet that lack flexibility and high arches.  This prevents any kind of shock absorption, even though it does place less rotational stress on ankles and knees.  This added force can cause fractures, ligament tears, and muscle strains because the legs are trying to compensate for the impact.  Those who underpronate need shoes with more cushioning and flexibility.  If you have a tendency to underpronate, selecting stability or motion-control shoes may cause you more problems by continuing to prevent pronation.

An ingrown toenail is a toenail that grows sideways into the nail bed, causing pain and swelling. Ingrown toenails can worsen and cause drainage, turning into a serious infection.

Several factors affect whether a person is at risk from an ingrown toenail. The many causes include being overweight, diabetes, participating in sports, having a fungal infection of the toe, and cutting your nails too short. Ingrown toenails also have a genetic predisposition, causing some people to be more prone to receive the condition than others. Other causes include improperly fitting shoes and shoes that keep the feet damp.

Ingrown toenails can be preventable with certain measures. For starters, allowing your toe nails to grow slightly longer in length will help prevent them from becoming ingrown. If you have already developed an ingrown toenail, soak the affected toe in warm water. This will alleviate the pain and help prevent an infection from forming. Antibiotic soap or Epsom salts may be added to further help the relieving process and avoid infection. Placing cotton beneath the affected area is also suggested, as this may help the toenail grow upwards and not into the nail bed. Swelling and redness can be reduced by resting with your feet elevated.

A podiatrist should be seen if the pain becomes so serious that it prevents you from doing your everyday activities. If a red streak running up your leg appears or if you suspect your infection has spread, contact a podiatrist immediately. Fast treatments can be undertaken to lessen your pain and have you walking comfortably.

An ingrown toenail can be easily treated with a Band-Aid. Simply wrap the affected toe with a Band-Aid to prevent infection and keep the nail from growing out at a painful angle.

In more serious cases, your podiatrist may decide to make a small incision to remove a portion of your toenail. To prevent the nail from growing back, medication will be placed directly into the nail bed. This procedure would be performed under local anesthesia and is a faster method to alleviate discomfort from an ingrown toenail. Post-procedure directions will have you stay off the affected foot for a day. Afterwards, normal activities can be resumed.  

A bunion is an enlargement of the base joint of the toe that connects to the foot, often formed from a bony growth or a patch of swollen tissues. It is caused by the inward shifting of the bones in the big toe, toward the other toes of the foot. This shift can cause a serious amount of pain and discomfort. The area around the big toe can become inflamed, red, and painful.

Bunions are most commonly formed in people who are already genetically predisposed to them or other kinds of bone displacements. Existing bunions can be worsened by wearing improperly fitting shoes. Trying to cram your feet into high heels or running or walking in a way that causes too much stress on the feet can exacerbate bunion development. High heels not only push the big toe inward, but shift one's body weight and center of gravity towards the edge of the feet and toes, expediting bone displacement.

A podiatrist knowledgeable in foot structure and biomechanics will be able to quickly diagnose bunions. Bunions must be distinguished from gout or arthritic conditions, so blood tests may be necessary. The podiatrist may order a radiological exam to provide an image of the bone structure. If the x-ray demonstrates an enlargement of the joint near the base of the toe and a shifting toward the smaller toes, this is indicative of a bunion.

Wearing wider shoes can reduce pressure on the bunion and minimize pain, and high heeled shoes should be eliminated for a period of time. This may be enough to eliminate the pain associated with bunions; however, if pain persists, anti-inflammatory drugs may be prescribed. Severe pain may require an injection of steroids near the bunion. Orthotics for shoes may be prescribed which, by altering the pressure on the foot, can be helpful in reducing pain. These do not correct the problem; but by eliminating the pain, they can provide relief.

For cases that do not respond to these methods of treatment, surgery can be done to reposition the toe. A surgeon may do this by taking out a section of bone or by rearranging the ligaments and tendons in the toe to help keep it properly aligned. It may be necessary even after surgery to wear more comfortable shoes that avoid placing pressure on the toe, as the big toe may move back to its former orientation toward the smaller toes.