What Is Achilles Tendinitis?
The Achilles tendon connects the calf muscles to the heel bone and helps power walking, running, jumping, and climbing stairs. Achilles tendinitis develops when the tendon is irritated by repetitive stress or overloaded faster than it can recover. In some patients, the issue is mostly inflammation. In others, the tendon begins to show wear-and-tear changes, often called Achilles tendinopathy.
Achilles problems can affect different areas of the tendon. Non-insertional Achilles tendinitis usually affects the middle portion of the tendon and is often seen in active adults and athletes. Insertional Achilles tendinitis affects the lower portion of the tendon where it attaches to the heel bone and may be associated with calcification or a bony prominence at the back of the heel. A sudden pop, sharp pain, weakness, or inability to push off may suggest a partial or complete Achilles rupture and should be evaluated quickly.
Common Causes
Achilles tendinitis is often related to a sudden change in activity, such as increasing mileage, adding hills or sprints, returning to exercise too quickly, or training on hard surfaces. Tight calf muscles, flat feet, overpronation, worn-out shoes, high heels, poor warm-up habits, and age-related tendon changes can also increase strain on the tendon.
Symptoms
Common symptoms include pain along the back of the heel, stiffness after rest, tenderness when touching the tendon, swelling or thickening, pain that worsens with activity, and difficulty rising onto the toes. Some patients also notice a creaking or grinding sensation with ankle movement.
Treatment at DFW Foot and Ankle
Treatment depends on the severity and cause of the tendon irritation. Dr. Suh may recommend activity modification, load management, stretching, eccentric strengthening exercises, supportive footwear, custom orthotics with a heel lift, MLS laser therapy, shock wave therapy, or immobilization if the tendon needs rest. Surgery is generally reserved for severe damage, rupture, or cases that do not improve with conservative care.
Frequently Asked Questions
Is Achilles tendinitis the same as an Achilles rupture?
No. Tendinitis usually develops gradually from irritation or overuse. A rupture is a partial or complete tear that often happens suddenly and needs prompt evaluation.
Can I keep running with Achilles tendinitis?
Running through Achilles pain can make the injury worse. Dr. Suh can help determine whether activity modification, cross-training, or temporary rest is safest.
How long does it take to heal?
Mild to moderate cases may improve over several weeks, while chronic cases can take longer. Recovery depends on tendon health, activity level, footwear, and consistency with treatment.