Tendons Tears can be either Tendinitis (when the tendon is inflamed) or Tendinosis (degeneration of the tendon with tiny tears in the tissue and around the tendon). Both are generally caused by overusing the tendon over a period of time. Typically Tendon Injures can be found in the upper and lower limbs. Symptoms are pain, inflammation, weakness, stiffness, and swelling. If the Tendinitis lasts longer than a few weeks and doesn’t get better, then it is most likely diagnosis would be Tendinosis.