Achilles tendonitis is a term that is somewhat misleading, because with Achilles tendon pain, there is frequently no inflammation of the Achilles tendon. Most attempts to fix Achilles tendon pain involve treatment directly to the Achilles tendon. But treating the Achilles tendon usually does not fix the problem, because there is often nothing wrong with the Achilles tendon. The Achilles pain is just a symptom. In fact, medical researches don't even call it tendonitis anymore -- it's called a tendinopathy -- which means "it hurts, but we really don't know what's wrong."