Health A-Z


Clinical Definition

Tendinitis is the inflammatory response or microscopic tearing of fibrosis tissue, which connects the muscle to bone. This condition is often due to repetitive motions, and is a common cause of soft tissue pain and strain.

In Our Own Words

Tendinitis is the irritation or inflammation of any tendon in the body, and the most common cause is overuse or injury. Tendons are the flexible tissues that connect bones to muscles. As you perform the same motion repeatedly, strain and stress is placed on the tendon connections, and over time, they become irritated and inflamed. Although tendinitis can affect any tendon in the body, common sites of tendinitis include the elbows, wrists, knees and heels. Tendinitis is more common as you age since the tendons lose elasticity.

Symptoms and Side Effects

  • Pain outside a joint
  • Mild swelling
  • Site tenderness
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