Why Early Treatment Matters for Tendon Pain: New Research Reveals a Critical Window for Recovery

Scott recently presented an article for our clinical discussion focused on tendon pain and it’s management. If you’ve ever experienced persistent pain in your Achilles tendon, patellar tendon (below the kneecap), or another tendon, you’ve probably heard the term tendinopathy. This common condition affects athletes, active individuals, and even people whose jobs involve repetitive movements.

For many years, we’ve understood that tendon pain changes over time, but exactly what happens during the early stages of tendinopathy has remained unclear. A recent study has provided new insights into how tendinopathy develops and, importantly, why seeking treatment early may lead to better outcomes.

Tendinopathy is a condition that affects tendons, the strong tissues that connect muscles to bones. It commonly develops when a tendon is exposed to more load than it can currently tolerate.

Common examples include:

• Achilles tendinopathy
• Patellar tendinopathy (“jumper’s knee”)
• Gluteal tendinopathy
• Tennis elbow
• Rotator cuff tendinopathy

Symptoms may include:

• Pain during activity
• Morning stiffness
• Tenderness when touching the tendon
• Reduced strength or performance
• Pain that worsens after exercise or repetitive activity

While tendinopathy is often thought of as a “wear and tear” problem, modern research shows it is actually a complex process involving changes in blood flow, tissue structure, and the body’s healing response.

Researchers compared people with:

• Early tendinopathy (less than three months of symptoms)
• Chronic tendinopathy (more than three months of symptoms)
• Healthy tendons with no symptoms

Using advanced imaging, ultrasound, microscopy, and tissue analysis techniques, the researchers examined how tendon structure and function changed as the condition progressed.

One of the most significant findings was that the earliest changes in tendinopathy appear to be:

The study found that blood flow within the tendon increased during the early stages of tendinopathy, even before major structural changes occurred. This increased blood flow appears to happen in existing blood vessels rather than through the growth of new vessels.

Researchers also observed tendon swelling early in the condition. Interestingly, pain levels were linked to tendon size, suggesting that these early physical changes may contribute to symptoms.

As tendinopathy became chronic, researchers observed:

• Growth of new blood vessels (neovascularisation)
• Changes to the tendon’s tissue structure
• Alterations in the proteins that make up the tendon matrix

These more substantial tissue changes were largely seen in the chronic stages rather than the early stages of the condition.

Perhaps the most exciting finding was the suggestion that early tendinopathy may represent a window of opportunity for treatment.

The researchers noted that previous work from their laboratory demonstrated faster treatment responses in people with a shorter duration of symptoms. Their findings suggest that during the early stages, the tendon may be more responsive to treatment because the tissue has not yet undergone the more extensive structural changes seen in chronic tendinopathy.

In simple terms:

The earlier tendon pain is identified and managed, the greater the opportunity to influence the condition before more complex changes develop.

Many people ignore tendon pain for months, hoping it will settle on its own. Unfortunately, discomfort that initially appears only after activity can gradually progress to pain during exercise, daily activities, and even at rest.

This research highlights the importance of not waiting until symptoms become severe before seeking help. Early assessment can allow treatment to begin while the tendon is undergoing its earliest changes, potentially improving recovery and reducing the risk of a long-term problem.

One of the most effective treatments for tendinopathy is a structured and progressive exercise program prescribed by a physiotherapist.

At our clinic, we assess factors that may be contributing to your tendon pain, including:

• Training loads and exercise habits
• Muscle strength deficits
• Joint mobility
• Running and movement mechanics
• Sport and occupational demands
• Recovery and lifestyle factors

Based on your assessment, we’ll develop an individualized treatment plan that may include:

• Progressive loading exercises
• Strength training
• Activity modification strategies
• Return-to-sport planning
• Education about tendon recovery
• Long-term prevention strategies

Importantly, physiotherapy aims not only to reduce pain but also to improve the tendon’s ability to tolerate the demands of everyday life, work, and sport.

The latest research suggests that the earliest stages of tendinopathy are characterized by increased blood flow and tendon swelling, while larger structural changes occur later. This may represent a valuable opportunity for early intervention and better treatment outcomes.

If you’ve recently developed tendon pain, whether in your Achilles, knee, shoulder, elbow, or hip, now is the ideal time to have it assessed.

Book an appointment with Nelson Bay Physiotherapy today. Early assessment and evidence-based treatment may help you recover faster, stay active, and prevent a short-term problem from becoming a long-term frustration.

Reference

Merkel, M. F. R., Malmgaard‐Clausen, N. M., Lendal, M., Siebner, H. R., Svensson, R. B., Dakin, S. G., Krüger, M., Schmidt, L., Agergaard, J., Yeung, C. C., Magnusson, S. P., & Kjaer, M. (2025). Increased Blood Flow and Tendon Swelling Precedes Vascular Expansion and Tissue Matrix Changes in Early Human Tendinopathy: A Potential Window for Superior Treatment Response. Advanced Science. https://doi.org/10.1002/advs.202514023