Achilles tendonitis is a common cause of heel and lower leg pain, particularly in active individuals, runners, and people whose work requires prolonged standing or walking. At Podiatry Associates, we take an evidence-based approach that focuses on why the Achilles tendon is overloaded, not just where it hurts.

What Is Achilles Tendonitis?

The Achilles tendon is the largest and strongest tendon in the body, connecting the calf muscles to the heel bone (calcaneus). Achilles tendonitis refers to pain and dysfunction caused by repetitive overload of this tendon.
Despite the name, most chronic cases are degenerative rather than inflammatory. For this reason, the condition is more accurately described as Achilles tendinopathy. The tendon gradually loses its ability to tolerate load, leading to pain, stiffness, and reduced function.

Types of Achilles Tendon Disorders

Non-Insertional Achilles Tendonitis

• Occurs in the mid-portion of the tendon, typically 2–6 cm above the heel

• Common in runners and active individuals

• Often associated with training errors and repetitive strain

Insertional Achilles Tendonitis

• Occurs where the Achilles tendon attaches to the heel bone

• May be associated with posterior heel spurs or calcific changes

• Often aggravated by rigid footwear and uphill walking

Understanding the type of Achilles tendon involvement is critical to selecting the appropriate treatment strategy.

What Causes Achilles Tendonitis?

Achilles tendon pain develops when the tendon is subjected to repeated mechanical overload without adequate recovery. Contributing factors may include:

• Sudden increases in activity or training intensity

• Limited ankle flexibility

• Calf muscle tightness or weakness

• Abnormal foot biomechanics

• Poor biomechanical function and subsequent load distribution

• Prolonged standing or occupational demands

Contrary to common belief, Achilles tendonitis is not usually caused by a single injury and is rarely the result of inflammation alone.

Symptoms of Achilles Tendonitis

Symptoms may vary depending on severity and chronicity but commonly include:

• Pain or stiffness along the Achilles tendon

• Discomfort that is worse with activity and improves with rest

• Morning stiffness that eases with movement

• Localized swelling or thickening of the tendon

• Tenderness at the mid-portion or insertion of the tendon

Early assessment is important, as untreated Achilles tendon pain can become chronic and more difficult to manage.

How Achilles Tendonitis Is Diagnosed

At Podiatry Associates, diagnosis begins with a detailed clinical examination, not imaging alone. We assess:

• Foot and ankle biomechanics

• Gait and load patterns

• Range of motion and calf muscle function

• Location, duration, and behavior of pain

Diagnostic imaging such as ultrasound or X-ray may be requested when indicated, particularly to assess insertional changes or associated heel spurs. Treatment decisions are based on function and symptoms, not imaging findings alone.

Achilles Tendonitis Treatment Options

Our treatment approach focuses on restoring the tendon’s ability to tolerate load while addressing the mechanical factors contributing to injury.

Conservative Treatment Options

• Custom foot orthotics to reduce or modify strain on the Achilles tendon

• Activity modification and load management

• Targeted stretching and strengthening programs

• Footwear assessment and recommendations

• Shockwave therapy for chronic Achilles tendinopathy

• Anti-inflammatory strategies when appropriate

Advanced Care

• Injection therapy in select cases

• Referral for imaging or surgical consultation when conservative care fails

Why Choose Podiatry Associates for Achilles Pain?

• Experienced chiropodists and podiatrists serving Mississauga and Brantford

• Evidence-based, biomechanics-driven treatment

• In-house prescribing of custom orthotics and manufacturing by Orthotica Labs

• Focus on long-term recovery and injury prevention

We don’t just treat Achilles pain—we identify and correct the underlying mechanical causes to reduce the risk of recurrence.

Book an Appointment for Achilles Tendonitis Treatment

If you are experiencing ongoing Achilles tendon pain, stiffness, or reduced performance, early assessment can make a significant difference. Our specialists will determine the cause of your symptoms, educate you as to the source. Together, agree upon a treatment plan that meets your needs.

Contact Podiatry Associates today to book an appointment at our Mississauga or Brantford clinic and take the first step toward lasting relief from Achilles tendon pain.