Free scan review
  1. Home
  2. Treatments
  3. Tendonitis vs tendinosis

Tendonitis vs Tendinosis

The difference between tendonitis and tendinosis (tendinopathy) and why it changes treatment.

Medically reviewed by Dr James Bristol, MD, PhD · Updated 2026-11-15

On this pageWhy it matters for treatmentSigns of tendinopathyTreatment

Tendonitis means inflammation; tendinosis (tendinopathy) means structural change in the tendon from overload. Most long-lasting tendon pain is tendinopathy. That is why rest and anti-inflammatories often disappoint, while progressive loading helps.

TendonitisTendinopathy / tendinosis
TimingNew, acuteWeeks to years
Main problemInflammationDisorganised collagen, overload
Best treatmentShort rest, iceProgressive loading

Why it matters for treatment

If tendon pain is treated as inflammation alone, people rest and take anti-inflammatories, then flare again when they return to activity. Treating it as a load and structure problem leads to progressive strengthening and, for stubborn cases, regenerative treatment that supports tendon rebuilding.

Tendon pain for more than 3 months? Get the free guide and a doctor review of your scan.

Signs of tendinopathy

Treatment

Progressive loading for 12 weeks, plus stem cell or PRP treatment if pain persists.

Related guides

Achilles Tendon ExercisesThe 12-week heel-drop programme for Achilles tendinopathy, heavy slow resistance alternatives and how much…Cortisone Injections for TendonsWhen cortisone injections help tendon pain, when they can backfire, and…PRP for Tendon PainWhat trials show about PRP for tennis elbow, plantar fasciitis, Achilles and rotator cuff tendon…Shockwave TherapyHow shockwave therapy works for plantar fasciitis, Achilles and calcific shoulder tendinopathy, and what to…Stem Cell Treatment for TendonsWhat studies show about stem cell treatment for rotator cuff repair, tennis elbow and other tendon…When Tendon Surgery Is NeededSigns of tendon rupture and situations where tendon or shoulder surgery is the right…

Free · 30 seconds

Stuck after 3 months of rehab?

Get the 7-step recovery plan and a free doctor review of your ultrasound or MRI. Find out if shockwave, PRP or stem cells could fit your tendon.

Free guide · Step 1 of 2

Free assessment: fix your tendon without surgery

Our doctor reviews your scan free and tells you whether stem cell treatment could fix your tendon without surgery. Plus the 7-step recovery guide, on WhatsApp.

Step 2 of 2

Last step: do you have an ultrasound or MRI report?

If yes, a doctor reviews it for free and tells you whether regenerative or other non-surgical options could suit you.

WhatsApp opens with your message ready. Tap send, then tap the paperclip to attach your report or photos.

Get my recovery plan →