Computed tomography (CT) examination (also known as a CAT scan) is used in podiatry to help diagnose and treat foot or ankle problems. A CT is a kind of X-ray device that takes cross sectional images of a part of the body, giving the physician a three-dimensional image.
CT scans are often superior to conventional X-rays because they can more accurately pinpoint a suspected problem. Common foot problems a CT exam can help diagnose include: arthritis, deformities, flat feet, foreign bodies, fractures, infection, and tumors.
Pregnant women, especially those in their first trimester, are advised against having a CT exam or any X-ray examination because the radiaiton may harm the unborn child.
X-rays help determine whether a bone has been fractured or damaged by conditions such as an infection, arthritis, or other disease.
Other reasons for conventional X-rays on your feet are to:
Evaluate changes in the bones from infections, arthritis, or other bone disease.
Assess whether a child's bones are growing normally.
Locate foreign objects (such as pieces of glass or metal) in a wound.
Determine whether bones are properly set after treating a fracture.
Pregnant women, especially those in their first trimester, are advised against having X-rays because the radiation may harm the unborn child.
Magnetic resonance imaging (MRI) is sophisticated diagnostic equipment used to diagnose an array of health problems or conditions, including:
Injuries of the tendons, ligaments, or cartilage.
MRIs use no radiation like conventional X-rays or CT scans. They employ large magnet and radio waves to produce three-dimensional images. MRIs are very good at portraying soft tissues and bones in your feet and ankles.
People with the following conditions may not be good candidates for a MRI:
Conditions that requires a heart pacemaker.
Artificial heart valves.
Electronic inner ear implants.
Metal fragments in eyes.
Surgical clips in the head (particularly aneurysm clips).
Individuals with dental fillings or bridges, a replacement hip or knee, or tubal ligation clips are generally safe to have a MRI.
In most cases, a full exam of the foot and ankle via MRI lasts between 60 and 90 minutes.
Ultrasound is a very effective tool for diagnosing a wide variety of foot and ankle problems, particularly soft tissue problems. Ultrasound uses sound waves on the body in a way much like radar uses sound waves. The waves hit a targeted area and are bounced back to a recording device, which produces an image. Ultrasound is a completely safe, noninvasive, and painless diagnostic procedure.
Common problems for which ultrasound may be prescribed include:
Heel spurs or plantar fasciitis.
Injuries of the ligaments, tendons, or cartilage.
Presence of foreign bodies.
Soft tissue masses.
Tarsal tunnel syndrome.
Tendonitis or tears in a tendon.
Orthotics, also known as orthoses, refers to any device inserted into a shoe, ranging from felt pads to custom-made shoe inserts that correct an abnormal or irregular, walking pattern. Sometimes called arch supports, orthotics allow people to stand, walk, and run more efficiently and comfortably. While over-the-counter orthotics are available and may help people with mild symptoms, they normally cannot correct the wide range of symptoms that prescription foot orthoses can since they are not custom made to fit an individual's unique foot structure.
Orthotic devices come in many shapes, sizes, and materials and fall into three main categories: those designed to change foot function, those that are primarily protective in nature, and those that combine functional control and protection.
Rigid orthotic devices are designed to control function and are used primarily for walking or dress shoes. They are often composed of a firm material, such as plastic or carbon fiber. Rigid orthotics are made from a mold after a podiatrist takes a plaster cast or other kind of image of the foot. Rigid orthotics control motion in the two major foot joints that lie directly below the ankle joint and may improve or eliminate strains, aches, and pains in the legs, thighs, and lower back.
Soft orthotics are generally used to absorb shock, increase balance, and take pressure off uncomfortable or sore spots. They are usually effective for diabetic, arthritic, and deformed feet. Soft orthotics are typically made up of soft, cushioned materials so that they can be worn against the sole of the foot, extending from the heel past the ball of the foot, including the toes. Like rigid orthotics, soft orthotics are also made from a mold after a podiatrist takes a plaster cast or other kind of image of the foot.
Semi-rigid orthotics provide foot balance for walking or participating in sports. The typical semi-rigid orthotic is made up of layers of soft material, reinforced with more rigid materials. Semi-rigid orthotics are often prescribed for children to treat flatfoot and in-toeing or out-toeing disorders. These orthotics are also used to help athletes mitigate pain while they train and compete.
Surgery on the foot, ankle, or lower leg is usually performed by podiatric surgeons and orthopedic surgeons specializing in the foot and ankle.
Foot and ankle surgeries address a wide variety of foot problems, including:
Sprains and fractures.
Arthritis and joint disease.
Benign and malignant tumors.
Calluses and warts.
Corns and hammertoes.
Heel or toe spurs.
Neuromas (nerve tumors).
Many foot and ankle surgeries today can be performed in the doctor's office or a surgical center on an outpatient basis. They frequently can be performed using local anesthesia, in some cases combined with sedation. Most foot surgeries require a period of immobilization after the procedures with protective devices, such as a bandages, splints, surgical shoes, casts, or open sandals. Limited weight bearing, elevating and icing the foot, and keeping the area dry are commonly required for the first two weeks following surgery until sutures are removed. Most surgeons will encourage post-operative exercise of the foot and legs to speed recovery. In addition, many patients need additional therapy or treatments after surgery in order to aid in the healing and recovery process. These may include physiotherapy, orthotic devices, and special footwear. After sufficient healing time, which varies from procedure to procedure, most patients can resume wearing their usual footwear.
Athlete's Foot Treatment
Extracorporeal Shock Wave