Plantar Fasciitis vs Sever’s Disease

Updated On:

May

12

Joe Armeli | DPT

A title image showing the difference between Plantar Fasciitis Vs. Sever's Disease

Aspect

Plantar Fasciitis

Sever's Disease

Definition

Inflammation of the plantar fascia ligament along the bottom of the foot.

involves the inflammation of the growth plate in the heel of children and adolescents

Causes

Overuse, micro-tears from overstretched fascia.

The Achilles tendon grows faster than the heel bone

Location of Pain

Heel and arch of the foot.

Heel Bone

Contributing Factors

Overuse, poor foot alignment, tight Achilles tendon, inappropriate footwear, lifestyle factors like being overweight or extensive standing.

Adolescent Age, Active lifestyle, Calve Tightness

Diagnostic Methods

Physical exam, medical history, windlass test, occasional imaging to rule out other conditions.

Detailed history, clinical examination,

When dealing with heel pain, it's crucial to differentiate between Plantar Fasciitis and Sever's Disease. 

Although both conditions cause heel discomfort, their causes, affected age groups, and symptoms are distinct. 

Recognizing these differences can aid in effective diagnosis and treatment.

What is Plantar Fasciitis?

Showing the path in the anatomy of the plantar fascia.

Plantar Fasciitis is characterized by inflammation of the plantar fascia, the thick band of tissue that extends from the heel to the toes along the foot's bottom. This condition is primarily caused by excessive pressure and strain on the plantar fascia. 

What is Sever's Disease?

Infographic showing the anatomy of Sever's Disease

Contrastingly, Sever's Disease or calcaneal apophysitis, involves the inflammation of the growth plate in the heel of children and adolescents. This condition is linked to the rapid growth associated with puberty, where bones, muscles, and tendons develop quickly, potentially stressing the growth plate. Sever’s Disease generally affects active children between 8-14 years old.

Exploring the Causes of Plantar Fasciitis and Sever's Disease

Infographic comparing the causes of Sever's Disease and Plantar Fasciitis.

Understanding the underlying causes of Plantar Fasciitis and Sever's Disease is essential for prevention and treatment. While both conditions result in heel pain, their causes are rooted in different physiological processes relevant to distinct age groups and lifestyles.

Causes of Plantar Fasciitis

Plantar Fasciitis arises from excessive pressure and strain on the plantar fascia, a robust band of tissue that supports the arch and extends from the heel to the toes. Several factors contribute to this overuse condition:

  • Overuse from physical activities: Activities that involve repetitive impact, such as running or jumping, significantly increase the risk.
  • Being overweight: Extra weight puts additional stress on the plantar fascia, exacerbating strain with every footfall.
  • Inadequate footwear: Shoes lacking proper arch support can fail to distribute weight evenly across the foot, leading to increased pressure on the plantar fascia.
  • Tight calf muscles or Achilles tendons: Limited flexibility of the calves can pull on the heel and place more tension on the plantar fascia, leading to irritation and pain.

Causes of Sever's Disease

Sever's Disease is primarily a consequence of the rapid growth seen during the growth spurts of children and adolescents. This growth can imbalance the development of different parts of the foot:

  • Disproportionate bone growth: The heel bone may develop faster than the muscles and tendons, particularly the Achilles tendon, creating stress on the growth plate.
  • Physical activity: Children active in sports that include a lot of running or jumping experience repeated stress on the growth plate, which can lead to inflammation.
  • Tight Achilles Tendon: Similar to Plantar Fasciitis, obesity and a tight Achilles tendon also contribute to the risk of developing Sever's Disease by increasing the strain on the heel.

Summary

In summary, Plantar Fasciitis is primarily caused by overuse and excessive strain on the plantar fascia due to factors like physical activity, weight, and improper footwear. On the other hand, Sever's Disease results from the rapid growth of bones relative to muscles and tendons during adolescence, especially in physically active children. Both conditions require targeted strategies for management and prevention, tailored to the specific causal factors involved.

Symptoms of Plantar Fasciitis and Sever's Disease

Identifying the symptoms of Plantar Fasciitis and Sever's Disease is crucial for early diagnosis and effective management of these conditions. Both can cause heel pain, but the nature of the pain and associated symptoms can help differentiate between them.

Symptoms of Plantar Fasciitis

Plantar Fasciitis is primarily known for its distinct pain pattern and additional discomfort in the foot:

  • Pain at the bottom of the heel: This is typically the most intense when first stepping out of bed in the morning or standing up after a prolonged period of sitting. The pain is often described as a sharp, piercing ache.
  • Improvement with activity: After the initial pain upon waking or standing, the discomfort generally eases with 10-15 minutes of movement as the foot "warms up."
  • Stiffness and inflammation: The foot may feel stiff and inflamed, especially around the heel and arch area.
  • Pain exacerbation by physical activities: Activities that involve walking, jumping, or running can trigger or worsen the pain throughout the day after periods of rest.

Symptoms of Sever's Disease

Sever's Disease, affecting a younger demographic, presents symptoms related to growth and physical activity:

  • Pain and tenderness at the heel: Unlike Plantar Fasciitis, the pain in Sever's Disease is located either at the back or the bottom of the heel and increases with physical activity. The pain typically subsides with rest.
  • Swelling and redness: The heel may appear swollen and red due to inflammation of the growth plate.
  • Foot discomfort and stiffness: General discomfort or stiffness in the foot may be noted, particularly after waking or after intense activities.
  • Limping: Children may limp, especially after engaging in activities that involve running, indicating the severity of discomfort.

Summary

In summary, the main symptom of Plantar Fasciitis is heel pain that can surprisingly improves with some activity, whereas Sever's Disease is characterized by pain that worsens with activity. Additionally, Sever’s Disease often includes symptoms like swelling, redness, and limping in children. Recognizing these symptoms early can lead to quicker, more targeted treatment and relief for sufferers of either condition.

Diagnosing Plantar Fasciitis and Sever's Disease

Accurate diagnosis of Plantar Fasciitis and Sever's Disease is essential for developing an effective treatment plan. Both conditions are primarily diagnosed through physical examinations and patient history, but there are specific methods and considerations unique to each.

Diagnosing Plantar Fasciitis

The diagnosis of Plantar Fasciitis typically involves the following steps:

  • Physical examination: A healthcare provider will examine the foot, particularly applying firm pressure to the bottom of the heel to identify pain and assess the extent of inflammation in the plantar fascia.
  • Biomechanical assessment: The provider may evaluate the patient's biomechanics, checking for issues like tight calf muscles or Achilles tendons, which can contribute to the stress on the plantar fascia.
  • Imaging: Imaging may be used if your plantar fasciitis is not improving to rule out other conditions. 

Diagnosing Sever's Disease

For Sever's Disease, diagnosis primarily focuses on clinical evaluation and the patient's demographic and activity profile:

  • Physical examination: Similar to Plantar Fasciitis but distinct in approach, the exam for Sever's Disease involves squeezing the sides of the heel to check for pain and tenderness along the growth plate, a key indicator of this condition.
  • Patient age and activity level: The healthcare provider will consider the patient's age—typically between 8 and 14 years old—and their involvement in sports, particularly those that include running and jumping.
  • Symptom assessment: Key symptoms such as heel pain that worsens with physical activity and improves with rest are crucial diagnostic indicators.

Summary

In summary, both conditions require a thorough physical examination by a healthcare provider. The provider will take into account the patient’s age, activity level, and specific symptoms. For Plantar Fasciitis, additional diagnostic tools like an ultrasound can help confirm the inflammation of the plantar fascia. Understanding these diagnostic processes can help individuals seek timely medical advice and appropriate treatment options.

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About the author, Joe Armeli DPT

I'm Joe Armeli, a Doctor of Physical Therapy, Certified Athletic Trainer and Certified Strength and Conditioning Specialist, a movement enthusiast, and a fellow runner. I'm here to help you achieve your physical health and performance goals, whether you're just starting to run or are a seasoned vet. For questions or concerns, email me at [email protected]. Look forward to hearing from you!

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