If your Achilles tendon looks “damaged” on an MRI or ultrasound, that finding may have nothing to do with why it hurts.
This trips up almost everyone with Achilles tendinopathy. Research shows that tendon abnormalities on imaging can appear in 0 to 80% of people with no symptoms at all. One study found tendon pathology in up to 46% of runners who had never experienced Achilles pain.
In other words, a thickened or disorganized-looking tendon on a scan does not automatically mean it’s the source of your pain. And a tendon that looks normal on imaging doesn’t rule out tendinopathy either.
Imaging alone can’t diagnose Achilles tendinopathy, and it shouldn’t determine your treatment plan.
Why “Fixing the Structure” Is the Wrong Goal
Many rehab approaches focus on changing what the tendon looks like on a scan. The idea is that a disorganized area needs to be regenerated or structurally repaired.
One researcher who has studied this extensively describes this as “treating the donut, not the hole.” The focus should be on building the capacity of the healthy tendon tissue surrounding the abnormal area, rather than obsessing over what the middle of the tendon looks like.
Research even suggests that a thickened tendon may be a positive adaptation. It could be the tendon adapting to maintain its ability to handle load, rather than being a sign that something is “wrong.”
Studies have also shown that people can improve their symptoms and function through exercise without measurable changes to tendon structure on imaging.
The structure was never the main problem in the first place.
So, What’s Actually Driving Your Pain?
Achilles tendinopathy develops when the intensity, frequency, and volume of load placed on the tendon exceed your ability to recover and adapt.
For an active person, this might happen after doing too much too soon. For example, you may rapidly increase your running mileage while preparing for a race.
For someone who is less active, the problem may be different. A decline in overall activity and health can reduce your capacity, making normal daily activities more demanding on the tendon.
Sleep, stress, and nutrition can also influence your ability to recover and adapt. That’s one reason two people can have the same running volume, yet only one develops Achilles pain.
What This Means for Treatment
Since imaging findings don’t directly correlate with symptoms, chasing structural changes through injections or procedures aimed at “fixing” the tendon can miss the bigger picture.
One study even found that PRP injections performed no better than a sham injection for Achilles tendinopathy.
The goal of rehab is to build your tendon’s capacity to tolerate load. This is done through structured exercise progressions, not by trying to reverse what appears on a scan.
Treatment may include:
- Isometric holds
- Heavy, slow resistance training, such as heel raises
- Progressive strengthening
- Dynamic loading, such as hopping and jumping, as your tolerance improves
The goal is to gradually expose the tendon to the demands you want it to handle.
The Bigger Picture
If you’ve been fixated on your scan results, or a provider has focused heavily on what your tendon “looks like,” it may be time to shift your focus.
Your function, your tolerance to activity, and how your symptoms respond to a structured loading program can tell you far more about your recovery than an image ever will.
Achilles tendinopathy typically takes months to improve. Progress should be measured by what you can tolerate doing, not by chasing a “normal”-looking tendon on a follow-up scan.
If you want to contact us or book an appointment, check our business profile page.
Dr. Jonny Blue is a Doctor of Physical Therapy and founder of Land and Sea Physical Therapy in Oceanside, CA. He specializes in orthopedic PT, root cause methodology, and helping active adults in North County San Diego get back to the activities they love without surgery or pain medication.