Ascend Foot & Ankle Center

Patient Education

Achilles Tendon Pain Explained

Published November 2026 · 6 min read

A therapist carefully applying colorful kinesiology tape on a patient's forearm for supportive therapy.

The first steps out of bed are stiff and sore. A run that used to feel effortless now leaves the back of your heel aching for hours. Achilles tendon pain is one of the most common reasons active people and weekend walkers alike start to move less, and it tends to linger when it is ignored. The good news is that most cases respond well when they are understood and addressed early.

What the Achilles Tendon Does

The Achilles is the thick band of tissue connecting your calf muscles to your heel bone. It is the largest and strongest tendon in the body, and it carries your weight every time you walk, climb stairs, jump or push off the ground. During running, it can handle loads several times your body weight. Because it works so hard and has a limited blood supply, it can be slow to heal once irritated.

Common Causes and Types of Pain

Achilles pain generally falls into two patterns, depending on where it appears along the tendon.

  • Midportion tendinopathy: pain and thickening a few centimeters above the heel, often with morning stiffness.
  • Insertional tendinopathy: pain right where the tendon attaches to the heel bone, sometimes with a bony bump and irritation from shoe backs.

Most cases develop from overload rather than a single injury. Tendons adapt to stress slowly, so a sudden jump in activity, hill work, a new training surface, or a return to sport after time off can tip the balance. Tight calf muscles, flat or high arches, worn footwear and weak calves can add to the strain.

Most cases develop from overload rather than a single injury.

Who Is Most Affected

Runners and athletes in jumping sports are well known to develop Achilles problems, but they are far from the only group. Adults in middle age who are active only on weekends are particularly vulnerable, as tendon tissue becomes less resilient over time. Certain medications, including some fluoroquinolone antibiotics, and conditions such as inflammatory arthritis or diabetes have also been linked with tendon problems. If you fall into one of these groups, it is worth mentioning it to your doctor.

What the Research Shows

Current evidence favors active, progressive loading as the foundation of care. Studies of eccentric and heavy slow resistance calf exercises show meaningful improvements in pain and function for many people with Achilles tendinopathy, though results take patience, often twelve weeks or more. Passive rest alone usually does not rebuild the tendon's capacity. Other options, such as supportive footwear, heel lifts, activity modification and, in selected cases, additional therapies, may be added based on your situation. Surgery is rarely needed and is generally considered only after a long trial of conservative care.

Practical Steps You Can Take

  • Reduce activities that trigger pain, but keep gentle movement going rather than complete rest.
  • Increase running, hiking or sport volume gradually, no more than about 10 percent per week.
  • Wear supportive shoes and avoid going barefoot or in flat sandals on hard floors while symptoms last.
  • Use a small heel lift temporarily if it eases strain, and ask about it if you are unsure.
  • Add calf strengthening and flexibility work once pain settles enough to tolerate it.
  • Apply ice after activity if it feels soothing, and avoid stretching aggressively through sharp pain.

Warning Signs That Need Prompt Attention

A sudden sharp pain or a snap at the back of the ankle, difficulty pushing off, or inability to rise onto your toes can signal a partial or complete rupture. Significant swelling, bruising, or a gap you can feel in the tendon also warrant urgent evaluation. Do not wait these out, since timely treatment can affect the outcome.

When to See a Podiatrist

If heel or tendon pain has lasted more than a couple of weeks, keeps returning, or limits the things you enjoy, an exam can clarify what is going on and prevent a minor problem from becoming a chronic one. Deann Hofer Ogilvie, DPM, evaluates foot and ankle concerns at our Lafayette, CO office, Monday through Friday, 9am to 3pm. Call (303) 537-4714 to arrange a visit and get a plan built around your goals.

From Deann Hofer Ogilvie, DPM

This article is for general education and is not a substitute for personal medical advice.

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