What commonly causes tendonitis?

Tendonitis is primarily caused by excessive wear and tear or repetitive motion, which leads to inflammation of the tendon. Activities that involve repetitive movements, such as typing, playing certain sports, or performing manual labor, put stress on specific tendons over time, resulting in microtears and eventual inflammation. This repetitive strain makes the tendons more susceptible to injury and inflammation, manifesting as tendonitis.

While injury from a single traumatic event can sometimes lead to tendinous problems, it is more directly associated with acute injuries rather than the chronic condition of tendonitis. Poor nutrition can impact overall musculoskeletal health, but it is not a direct cause of tendonitis. Genetic factors can influence individual susceptibility to various conditions, but they do not typically direct cause tendonitis. Therefore, the relationship between repetitive motion and tendonitis highlights the importance of proper technique and variations in activity to prevent the condition.