Foot Deformities

What is foot deformities?

Foot deformities is a broad term for any change in the normal shape, alignment or structure of the foot. The foot is made up of 26 bones, more than 30 joints and a network of muscles, tendons (cords that connect muscle to bone) and ligaments (bands that connect bone to bone). When one or more of these parts develops or shifts out of its usual position, the foot may look different, function differently, or both.

Some foot deformities are present at birth (congenital). Common examples include clubfoot, in which the foot turns inward and downward, and metatarsus adductus, in which the front of the foot curves inward. Other deformities develop later in life (acquired). These include bunions (a bony bump at the base of the big toe), hammertoe and claw toe (toes that bend abnormally at the joints), flat feet (a lowered or absent arch), high arches (pes cavus), and Charcot foot, a serious change in bone structure that can occur in people with nerve damage from diabetes.

Foot deformities affect people of all ages. Newborns may be born with them, children may develop them as they grow, and adults often acquire them through wear, footwear, injury, arthritis or other medical conditions. Many mild deformities cause no problems at all, while others can lead to pain, difficulty walking and skin damage. In a hospital setting, these conditions are usually assessed and managed by an orthopedics department, such as the Orthopedics & Joint Center at Acibadem, sometimes together with podiatry, rehabilitation and, where diabetes is involved, endocrinology teams.

Foot deformities symptoms

Foot deformities symptoms vary widely depending on the type of deformity, how severe it is and how long it has been present. Some people notice only a change in appearance. Others develop pain and difficulty with everyday activities. Common symptoms include:

• A visible change in the shape of the foot, toes or arch
• Pain in the foot, especially when standing or walking for long periods
• Difficulty finding shoes that fit comfortably
• Redness, swelling or warmth over a bony prominence
• Corns, calluses or blisters where the skin rubs against shoes
• Stiffness or reduced movement in the toes or ankle
• Changes in the way you walk, or uneven wear on the soles of shoes
• Numbness, tingling or burning if nerves are compressed
• Instability or a feeling that the foot or ankle gives way

In infants and children, symptoms are often noticed by parents or during routine checkups rather than reported by the child. A baby with clubfoot has a foot that is visibly turned inward and cannot easily be moved into a normal position. Flexible flat feet in young children are extremely common and often cause no discomfort. Foot deformities symptoms in children that deserve attention include limping, refusing to walk, tripping frequently, or complaints of pain.

In adults, bunions typically cause a bump on the side of the big toe that may become sore and red after wearing shoes. Hammertoes and claw toes often rub on the top of the shoe and form corns. Adult-acquired flat foot may cause aching along the inside of the ankle and arch. High arches may lead to pain in the ball of the foot and heel because weight is concentrated in those areas.

Symptoms also tend to change with stage. Early on, a deformity may be flexible, meaning the joint can still be moved into a normal position by hand. Over time, some deformities become rigid, meaning the joint is fixed and can no longer be corrected manually. Rigid deformities are more likely to cause persistent pain and skin problems and may require more involved treatment.

Causes and risk factors

Foot deformities causes fall into two broad groups: those present from birth and those that develop over time. In many cases more than one factor is involved, and sometimes no clear cause can be identified.

Congenital causes. Some deformities develop while a baby is still in the womb. Clubfoot and metatarsus adductus are examples. The exact reason is not always known, but genetics, the position of the baby in the womb, and certain nervous system conditions such as spina bifida may play a role. A family history of clubfoot increases the likelihood of a child being born with it.

Inherited foot structure. The shape of your bones, the length of your toes and the natural flexibility of your joints are partly inherited. People whose parents have bunions or flat feet are more likely to develop them, although lifestyle factors also matter.

Footwear. Shoes that are too narrow, too short or have high heels push the toes together and forward. Over many years this can contribute to bunions, hammertoes and other toe deformities.

Arthritis. Rheumatoid arthritis, an autoimmune condition in which the immune system attacks the joints, commonly damages the small joints of the feet and can cause toes to drift, bend and overlap. Osteoarthritis, the wear-and-tear form of arthritis, can also alter joint shape.

Nerve and muscle conditions. Conditions that affect the nerves or muscles, such as cerebral palsy, stroke, Charcot-Marie-Tooth disease (an inherited nerve disorder) and peripheral neuropathy (nerve damage in the limbs), can cause muscle imbalance. When some muscles are stronger than others, they pull the foot into an abnormal position, often producing high arches or claw toes.

Diabetes. Long-standing diabetes can damage the nerves in the feet. Loss of protective sensation, combined with changes in blood flow, can lead to Charcot foot, in which the bones weaken and collapse without the person feeling pain.

Injury. Fractures, dislocations and tendon tears that heal in a poor position can leave the foot misshapen. A tear or gradual weakening of the posterior tibial tendon, which supports the arch, is a common cause of adult-acquired flat foot.

Risk factors that make foot deformities more likely include a family history, being female (bunions are more common in women), older age, obesity, occupations that involve prolonged standing, diabetes, inflammatory arthritis, neurological disease, and regularly wearing poorly fitting shoes.

Foot deformities diagnosis

Foot deformities diagnosis usually begins with a conversation and a physical examination. Your doctor will ask when you first noticed the change, whether it is getting worse, what makes symptoms better or worse, what shoes you wear, and whether you have other medical conditions such as diabetes or arthritis. A family history is also relevant.

During the physical examination, the doctor will look at your feet while you are sitting, standing and walking. They may check:

• The alignment of the toes, arch, heel and ankle
• Whether the deformity is flexible or rigid
• Range of motion in the joints
• Muscle strength and tendon function
• Skin changes such as calluses, corns or ulcers
• Sensation, using light touch or a thin filament, especially in people with diabetes
• Pulses in the foot to assess circulation
• Your gait, meaning the way you walk

Imaging is often used to confirm the diagnosis and plan treatment. X-rays taken while you are standing show the bones and joints under normal weight and allow the doctor to measure angles between bones, which helps grade the severity of conditions such as bunions and flat feet. Ultrasound or magnetic resonance imaging (MRI, a scan that uses magnetic fields to show soft tissue) may be ordered if a tendon or ligament problem is suspected. A computed tomography (CT) scan, which produces detailed cross-sectional pictures of bone, is sometimes used for complex deformities or before surgery.

In some cases, additional tests help identify an underlying cause. Blood tests can check for inflammatory arthritis or diabetes. Nerve conduction studies, which measure how well electrical signals travel along nerves, may be requested if a neurological condition is suspected. In children, a pediatric orthopedic specialist may use specific clinical scoring systems to grade the severity of clubfoot.

Congenital deformities such as clubfoot are sometimes seen on a prenatal ultrasound scan during pregnancy, but the diagnosis is confirmed after birth by examining the baby.

Foot deformities treatment options

Foot deformities treatment options depend on the type of deformity, whether it is flexible or rigid, how much it affects daily life, the person’s age and overall health, and whether there is an underlying condition driving it. Many people never need surgery. Treatment generally moves from the simplest, least invasive approaches to more involved ones only if symptoms persist.

Observation. Mild deformities that cause no pain or functional problems often need no active treatment. Flexible flat feet in young children, for example, frequently improve as the child grows and are usually monitored rather than treated. Your doctor may suggest periodic checkups to watch for change.

Footwear changes. Wide, deep shoes with a low heel and a soft upper reduce pressure on bunions and bent toes. Avoiding pointed or high-heeled shoes is one of the most commonly recommended first steps for adults with toe deformities.

Padding, splints and orthotics. Gel pads, toe spacers and protective sleeves can cushion painful areas. Orthotics are shoe inserts, either ready-made or custom-molded, that support the arch and redistribute pressure. Night splints are sometimes used to hold toes in a straighter position, although they do not correct a fixed deformity.

Medication. Over-the-counter pain relievers and anti-inflammatory medicines may ease discomfort. Where arthritis is the cause, treating the arthritis itself with disease-modifying medication may slow further joint damage. Your doctor can advise on what is appropriate for you.

Physical therapy. Stretching and strengthening exercises can improve flexibility, support the arch and help balance the muscles that control the foot. Therapy is particularly relevant where muscle imbalance or tendon weakness contributes to the problem.

Casting and bracing. For clubfoot in infants, the standard approach is a series of gentle manipulations and plaster casts, changed regularly over several weeks, often followed by a minor procedure to release a tight heel cord and a period of wearing a brace. For Charcot foot, a special cast or boot that removes weight from the foot is used to protect the bones while they heal.

Injections. A corticosteroid injection, which delivers an anti-inflammatory medicine directly into an inflamed joint or bursa (a fluid-filled cushion), may provide temporary relief in selected cases.

Surgery. Surgery is generally considered when non-surgical measures have not controlled pain, when a deformity is rigid and causing skin breakdown, or when walking is significantly affected. Procedures vary widely. They may involve cutting and realigning bone (osteotomy), fusing a joint so it no longer moves (arthrodesis), releasing or transferring tendons, or removing bony prominences. Surgery is usually followed by a period of limited weight-bearing and rehabilitation, and full recovery can take several months. As with any operation, there are risks, including infection, stiffness, nerve irritation and the possibility that the deformity returns over time. Your surgeon will explain the expected benefits and risks for your particular situation.

Rehabilitation. After casting or surgery, a rehabilitation program helps restore movement, strength and normal walking patterns. Consistent follow-through with exercises and footwear advice is an important part of maintaining any correction that has been achieved.

Living with foot deformities and outlook

The outlook for foot deformities varies a great deal. Many people with mild bunions, flat feet or minor toe changes live comfortably for years with sensible footwear and occasional adjustments. Deformities do not always progress, but some do worsen gradually, particularly if the contributing factors, such as tight shoes or untreated arthritis, continue.

Clubfoot that is treated early in infancy with casting and bracing often results in a foot that functions well, although the affected foot may remain slightly smaller and less flexible than the other, and long-term follow-up is usually recommended. Deformities linked to neurological conditions may change over time as the underlying condition evolves.

People with diabetes and any foot deformity need particular care, because altered pressure points combined with reduced sensation raise the risk of ulcers that heal slowly. Daily foot inspection, protective footwear and regular checks by a healthcare professional are generally advised.

Practical steps that may help day to day include choosing shoes with a wide toe box and good support, keeping to a healthy weight to reduce load on the feet, looking after skin and nails, using prescribed inserts or braces consistently, and reporting new pain or skin changes promptly rather than waiting. Surgery, where it is needed, can relieve pain and improve function for many people, but results cannot be guaranteed, and some deformities may recur.

Frequently asked questions

What is foot deformities in simple terms?

Foot deformities are changes in the normal shape or alignment of the foot, toes, arch or ankle. They can be present from birth, such as clubfoot, or develop later in life, such as bunions, hammertoes or flat feet. Some cause no problems, while others lead to pain, difficulty walking or skin damage.

What are the most common foot deformities symptoms?

The most common symptoms are a visible change in foot shape, pain when standing or walking, trouble fitting into shoes, and corns or calluses where the skin rubs. Redness and swelling over a bony bump, stiffness, and changes in the way you walk are also frequent. Symptoms depend on the type and stage of the deformity, and some people have no symptoms at all.

What are the main foot deformities causes?

Causes include inherited foot structure, conditions present at birth, arthritis, nerve and muscle disorders, diabetes-related nerve damage, injuries that heal poorly, and years of wearing narrow or high-heeled shoes. In many cases several factors act together, and sometimes no single cause can be identified.

How is foot deformities diagnosis made?

Diagnosis is usually based on a physical examination of the foot while sitting, standing and walking, combined with standing X-rays that show bone alignment and allow angles to be measured. Depending on the situation, your doctor may also order MRI or ultrasound to look at tendons, blood tests to check for arthritis or diabetes, or nerve studies if a neurological cause is suspected.

What are the foot deformities treatment options without surgery?

Non-surgical options include wearing wider, supportive shoes, using pads, toe spacers or orthotic inserts, taking pain-relieving or anti-inflammatory medication, and doing physical therapy exercises. For infants with clubfoot, serial casting and bracing is the standard approach. Many people find these measures control symptoms well, although they do not straighten a fixed deformity.

Can foot deformities be corrected in adults?

Some deformities can be improved or corrected in adults, most often through surgery that realigns bone, fuses a joint or adjusts tendons. Whether surgery is appropriate depends on the type of deformity, the level of pain, general health and how much daily life is affected. Non-surgical treatment aims to relieve symptoms rather than change the shape of the foot.

Do foot deformities get worse with age?

Some do and some do not. Bunions and adult flat foot may gradually progress, especially if contributing factors continue. Others remain stable for many years. Regular review with a healthcare professional can help track any change and adjust treatment as needed.

When to see a doctor

It is reasonable to see a doctor whenever a change in foot shape causes pain, affects your walking or makes it hard to find comfortable shoes. Parents should have a child assessed if a foot looks turned or curved, if the child limps or trips often, or if the child complains of foot pain. Seek medical attention promptly, or urgently where indicated, if you notice any of the following:

• Sudden, severe foot pain or swelling, especially after an injury
• An open sore, blister or ulcer on the foot that is not healing, particularly if you have diabetes
• Redness, warmth and swelling in a foot that is numb or has reduced sensation, which can be an early sign of Charcot foot or infection
• Signs of infection such as spreading redness, pus, fever or chills
• A foot that suddenly changes shape or collapses
• New numbness, tingling or weakness in the foot or leg
• A foot that becomes pale, blue or cold, which may indicate a problem with blood flow
• Inability to bear weight on the foot

These warning signs do not necessarily mean something serious is happening, but they should be checked by a healthcare professional without delay.