Tendonitis refers to the inflammation of a tendon, which is a band of fibrous connective tissue that attaches a muscle to a bone. Tendonitis can result from repetitive or overuse injuries and can occur during activities such as gardening, carpentry, shoveling, painting, scrubbing, tennis, golfing, skiing, and pitching. People with poor posture or those who avoid stretching before exercise are at a higher risk of developing tendonitis. Tendonitis can also affect individuals with rheumatoid arthritis, gout, psoriatic arthritis, thyroid disorders, infections, or an unusual medication reaction.
Tendons are tough cord-like tissues made up of collagen protein that connect your muscles to your bones. Tendinopathy is a breakdown of collagen in the tendon resulting in pain along with reduced range of motion and flexibility. Tendinopathy can occur in any of your tendons, but it is most common around your elbows, shoulders, wrists, heels, and knees.