Whats the difference between tendonitis and tendonopathy?

Tension patchy: Tension patchy is probably the better term as it implies and problem related to the tendon. When a term ends in "itis" it means inflammation. However most things we call tendinitis like jumpers knee, cuff problems, tennis elbow, are actually collagen fiber breakdown and not tendinitis. Tendinopathy is a better and more universal term.

Tendinitis!: Tendinitis specifically refers to tendon inflammation, either insertional or within the tendon itself. Tendinopathy means something is pathologically wrong with the tendon, and it does not imply inflammation, but includes infallamation! bascially, an "i don't know" diagnosis!

One is Inflammation: Tendonitis refers to inflammation of the tendon. Tendonopathy is not a term commonly used, it is nonspecific. It can refer to any problem of the tendon.

Acute vs Chronic: Tendonitis is an acute injury of the tendon areas resulting in inflammation and irritation noted on imaging studies. Tendonopathy is a chronic condition in which inflammation is not the issue but micro tearing and lack of healing taking place in the tendon. Consider PRP or stem cell therapy for either condition to use your own body's healing and anti-inflammatory factors to regenerate tissue.