A tendon is a cord which connects muscle to bone or other tissue. Most tendonitis is a result of the wearing process that takes place over a period of years, much like the wearing process on the sole of a shoe which eventually splits from overuse. Tendinitis is inflammation (redness, soreness, and swelling) of a tendon. The rotator cuff and/or biceps tendon become inflamed, usually as a result of being pinched by surrounding structures.
Generally, tendinitis can be categorized as follows:
* acute tendinitis caused by excessive use.
* chronic tendinitis resulting from degenerative disease or use.