Introduction

Have you ever wondered why some youngsters walk on their toes even as they grow older? While toe walking is typical in toddlers, persistent cases raise concerns about the cause. Is it possible that genetics is involved?

According to research, hereditary features may have a role in toe walking, especially if it runs in families. Some children may develop this walking style on their own, while others may have genetic variations that alter the strength of the muscles, nerve functioning, or balance. Scientists are still researching which genes may be involved and how they influence mobility.

Continue reading to learn more about how genetics may contribute to toe walking, as well as probable causes and treatments.

What is toe walking?

Toe walking is the practice of walking on one's toes or the ball of the foot rather than the heels. This means they don't do the usual heel-to-toe step. Toe walking is prevalent among young children learning to walk. They may walk this way to practice moving around. However, if a child continues to walk on his or her toes after the age of two, it may be worth noting.¹

When is it considered normal?

Toe walking is common in toddlers under the age of two as they begin to walk.² Children at this stage are working on their balance and coordination, which toe walking can help with. By the age of three, most children should have outgrown toe walking and have begun to walk heel-to-toe.

When does it suggest an underlying issue?

If a child continues to walk on their toes after the age of 3, it could be an indication of an underlying medical condition. A Short Achilles tendon, neurological conditions, and developmental disorders are all potential causes.³

Causes of toe walking

Toe walking can occur for a variety of reasons, therefore, it is essential to know what causes it. Some children outgrow it, while others could have a medical or hereditary cause. Here are a few common causes:

Idiopathic toe walking

Some children walk on their toes out of habit, even after they have learned to walk properly. Idiopathic toe walking is more common in children with a family history of the illness, indicating a potential genetic link.⁴

Neurological conditions

Toe walking can also be an indicator of neurological disease that impairs muscular control and movement.⁵ Toe walking can lead to the following conditions:

• Cerebral palsy (CP): a condition that affects muscle tone and coordination 
• Muscular dystrophy: a group of diseases that cause muscle weakness over time, leading to difficulties in walking
• Spinal cord issues: spinal cord disorders, such as tethered cord syndrome, can impair leg movement and cause toe walking

Autism spectrum disorders (ASD)

According to research, some children with autism walk on their tiptoes. This could be owing to sensory processing variations, in which they feel more at ease walking this way.⁶

Tight achilles tendon or calf muscle

If the Achilles tendon (the tendon at the back of the ankle) is excessively short or tight, it may be difficult for the heel to touch the ground when walking.⁷ This can happen naturally or gradually if a toddler constantly walks on their toes.

Genetic factors

Recent research indicates that genetics may play a role in toe walking. If a parent or close family member walked on their toes as a child, their child is likely to do the same.  

Sensory processing issues

Some children have sensory sensitivities, meaning they respond differently to touch and movement.⁸ Moreover, walking on their toes might help them feel more balanced or comfortable.

Other medical conditions

Toe walking can also be seen in conditions like:

• Charcot-Marie-Tooth Disease (CMT): a genetic disorder that affects the nerves in the legs and feet
• Dystonia: a movement disorder that causes involuntary muscle contractions

Genetic factors in toe walking

Many toddlers do toe walking when they start to walk, and this practice can occasionally be passed down through generations. This indicates that heredity may play a role.

Family history and hereditary patterns

Research suggests that genetics may play a role in toe walking, especially when it runs in families.⁹ This means that if a parent or sibling walked on their toes as a child, there is a higher chance that another family member might do the same.

Research connects genetics to idiopathic toe walking

According to research published in the Journal of Pediatric Orthopaedics, more than 60% of children with idiopathic toe walking had a family history of the condition. Toe walking, according to scientists, may be influenced by genes that affect muscular tone, coordination, or brain development. More study is needed to determine the precise genes that cause this illness.

Genetic conditions associated with toe walking

Toe walking is sometimes linked to genetic disorders that affect muscle function, nerve signals, or brain development. Some of these conditions include autism spectrum disorder (ASD), cerebral palsy, duchenne muscular dystrophy (DMD), and hereditary spastic paraplegia (HSP).¹⁰

How do genes affect muscle and nerve function?

Genes influence how our muscles and nerves operate. They contain instructions for making proteins that aid in muscle development, contraction, and repair. Nerve cells (neurons) use genetic instructions to send messages from the brain to the muscles.¹¹

Genes' role in muscle development

Several genes, including myostatin (which governs muscle growth), dystrophin (which helps to maintain strong muscles), and ACTN3 (which aids in forceful muscular contractions), play a role in muscle growth and function.^12,13

Genetic mutations that affect balance and coordination

Muscles and nerves work together to provide balance and coordination. Mutations in the genes responsible for these functions can cause mobility issues. CACNA1A (which aids nerve cell communication), KIF1A (which aids in the transfer of vital components within nerve cells), and SLC1A3 (which controls brain signals) are some of the key genes involved.¹⁴

Mutations in these genes can cause communication between the brain and muscles to be delayed or disturbed, making normal walking, standing, and movement difficult.

Inherited neurological disorders

Some nerve illnesses are passed down via families due to defective genes. These disorders impair mobility and muscle control. Examples include:

• Charcot-Marie-Tooth disease (CMT) damages the nerves in the hands and feet, causing muscle weakness and balance issues¹⁵
• Hereditary spastic paraplegia (HSP) causes stiffness and weakening in the leg muscles, making it difficult to walk
• Spinocerebellar ataxia (SCA) impairs balance and coordination by destroying nerve cells in the brain 

Diagnosis and genetic testing

How doctors assess toe walking

Doctors begin by asking about the child's medical history, including birth history, developmental milestones, and any family history of neurological or genetic conditions. They then conduct a physical exam to check muscle strength, reflexes, and walking patterns. 

When genetic testing may be recommended

Genetic testing is usually suggested when toe walking occurs with other symptoms, such as muscle weakness, developmental delays, or a family history of similar walking patterns. If doctors suspect an underlying genetic disorder, they may order tests to identify mutations, such as whole-exome sequencing or specific gene panels.

Other diagnostic tools

If the cause of toe walking is unclear, additional tests, such as MRI (magnetic resonance), EMG (electromyography), or gait analysis, may be needed. These diagnostic tools help doctors determine whether toe walking is due to a medical condition or if it is idiopathic (without an underlying cause). 

Treatment and management

The treatment of toe walking depends on its cause. If it happens due to an underlying medical condition, treating that condition is the first step. But if it's idiopathic (without a known cause), different approaches can help manage and correct the walking pattern. The following are how to walking can be treated and managed:

Physical therapy

Physical therapy is often the first line of treatment. Stretching exercises help loosen tight calf muscles, making it easier for the heel to touch the ground. Therapists may also use special techniques, such as gait training, to encourage normal walking patterns.

Bracing and orthotics

In some cases, doctors recommend ankle-foot orthoses (AFOs) or braces. These devices keep the foot in a neutral position, preventing toe walking.¹⁶

Casting

If the calf muscles are very tight, doctors may suggest serial casting. This involves wearing a series of casts that slowly stretch the muscles over several weeks. 

Botox injections

Botulinum toxin (Botox) injections are sometimes used for children with severe muscle tightness. Botox temporarily weakens the tight muscles, making stretching exercises more effective.¹⁷

Surgery

Surgery is considered when other treatments do not work, especially if the Achilles tendon is very short or tight. A procedure called Achilles tendon lengthening helps restore normal foot movement. 

Behavioural and sensory approaches

For children with sensory processing issues, like those with autism, sensory integration therapy may be helpful. This therapy focuses on reducing sensory sensitivities and improving body awareness to encourage heel-to-toe walking.

Conclusion

Toe walking may be due to habit, medical issues, or genetics. While some children outgrow it, others require therapy to prevent consequences. Research indicates a genetic relationship, particularly in families with a history of toe walking, but additional research is needed.

Early detection facilitates successful management. If toe walking persists, seek medical advice. Many children can develop a normal gait with the proper intervention, such as therapy, braces, or treatment. Ongoing study may reveal other genetic variables and improve future treatments.

FAQ’s

How can I stop my toddler from toe walking?

Toe walking in children may be a habit or a sign of tight calf muscles. Stretching exercises and supportive shoes can help promote flat-footed walking. If it lasts longer than 2 years or creates balance problems, see a paediatrician or physical therapist. Early treatments can help to avoid long-term muscle tension and walking issues.

Summary

Toe walking is typical in toddlers, but if it persists until the age of three, it could signal an underlying problem. The causes vary from habitual walking to neurological diseases, tight achilles tendons, sensory processing issues, and genetics. Research reveals a genetic relationship, particularly in families with a history of toe walking, although the specific genes involved are currently being investigated.

Medical history, physical tests, and, on occasion, genetic testing are used to provide a diagnosis. Treatment varies according to the cause and may include physical therapy, braces, casting, botox injections, or surgery. Early intervention is critical for managing toe walking efficiently and avoiding problems.