Pes planus is a condition in which the arch or instep of the foot collapses and comes in contact with the ground. In some individuals, this arch never develops while they are growing. Alternative names include pes planovalgus, flat feet, fallen arches, pronation of the feet.
Over-pronation is a common biomechanical problem that occurs when the arches collapse while walking or standing. This condition hampers our natural walking pattern, causing an imbalance, and leading to wear and tear in other parts of the body with every step we take. Whether you suffer from over-pronation like most of the population, or you have a true flat foot, in both cases your poor walking pattern may contribute to a range of different complaints. As we age, poor aligment of the feet causes very common conditions such as heel pain or knee pain. Over-pronation has different causes. Obesity, pregnancy, age or repetitive pounding on a hard surface can weaken the arch, leading to over-pronation. Over-pronation is also very common with athletes, especially runners, who most of them nowadays use orthotics inside their shoes.
People will have a very heavily dropped arch and it won?t affect them at all and people will have it slightly dropped and it could cause fierce problems. It could cause things like plantar fasciitis, it could cause heel spurs, desperate ball-of-the-foot pressure, or pressure on the big toe known as the hallux which causes discomfort in the foot. It will create problems upwards to the knees, hips and the back once you?re out of line.
Flat feet are easy to identify while standing or walking. When someone with flat feet stands, their inner foot or arch flattens and their foot may roll over to the inner side. This is known as overpronation. To see whether your foot overpronates, stand on tiptoes or push your big toe back as far as possible. If the arch of your foot doesn't appear, your foot is likely to overpronate when you walk or run. It can be difficult to tell whether a child has flat feet because their arches may not fully develop until they're 10 years of age.
What does it mean when you have flat feet?
Non Surgical Treatment
Custom orthotics are specially designed insoles, which are made for your by prescription. This is done by taking a plaster cast of the foot in its neutral position and is then sent to a laboratory, with your prescription to be made to your exact specifications. The insole then correctly aligns your foot and as a result your body. This will relieve abnormal strain of tissues and structures which can cause pain. For less severe mal-alignments or for sports use a wide variety of temporary insoles.
Surgical correction is dependent on the severity of symptoms and the stage of deformity. The goals of surgery are to create a more functional and stable foot. There are multiple procedures available to the surgeon and it may take several to correct a flatfoot deformity. Stage one deformities usually respond to conservative or non-surgical therapy such as anti-inflammatory medication, casting, functional orthotics or a foot ankle orthosis called a Richie Brace. If these modalities are unsuccessful surgery is warranted. Usually surgical treatment begins with removal of inflammatory tissue and repair of the posterior tibial tendon. A tendon transfer is performed if the posterior tibial muscle is weak or the tendon is badly damaged. The most commonly used tendon is the flexor digitorum longus tendon. This tendon flexes or moves the lesser toes downward. The flexor digitorum longus tendon is utilized due to its close proximity to the posterior tibial tendon and because there are minimal side effects with its loss. The remainder of the tendon is sutured to the flexor hallucis longus tendon that flexes the big toe so that little function is loss. Stage two deformities are less responsive to conservative therapies that can be effective in mild deformities. Bone procedures are necessary at this stage in order to recreate the arch and stabilize the foot. These procedures include isolated fusion procedures, bone grafts, and/or the repositioning of bones through cuts called osteotomies. The realigned bones are generally held in place with screws, pins, plates, or staples while the bone heals. A tendon transfer may or may not be utilized depending on the condition of the posterior tibial tendon. Stage three deformities are better treated with surgical correction, in healthy patients. Patients that are unable to tolerate surgery or the prolonged healing period are better served with either arch supports known as orthotics or bracing such as the Richie Brace. Surgical correction at this stage usually requires fusion procedures such as a triple or double arthrodesis. This involves fusing the two or three major bones in the back of the foot together with screws or pins. The most common joints fused together are the subtalar joint, talonavicular joint, and the calcaneocuboid joint. By fusing the bones together the surgeon is able to correct structural deformity and alleviate arthritic pain. Tendon transfer procedures are usually not beneficial at this stage. Stage four deformities are treated similarly but with the addition of fusing the ankle joint.
Well-fitted shoes with good arch support may help prevent flat feet. Maintaining a healthy weight may also lower wear and tear on the arches.
Patients may go home the day of surgery or they may require an overnight hospital stay. The leg will be placed in a splint or cast and should be kept elevated for the first two weeks. At that point, sutures are removed. A new cast or a removable boot is then placed. It is important that patients do not put any weight on the corrected foot for six to eight weeks following the operation. Patients may begin bearing weight at eight weeks and usually progress to full weightbearing by 10 to 12 weeks. For some patients, weightbearing requires additional time. After 12 weeks, patients commonly can transition to wearing a shoe. Inserts and ankle braces are often used. Physical therapy may be recommended. There are complications that relate to surgery in general. These include the risks associated with anesthesia, infection, damage to nerves and blood vessels, and bleeding or blood clots. Complications following flatfoot surgery may include wound breakdown or nonunion (incomplete healing of the bones). These complications often can be prevented with proper wound care and rehabilitation. Occasionally, patients may notice some discomfort due to prominent hardware. Removal of hardware can be done at a later time if this is an issue. The overall complication rates for flatfoot surgery are low.