Tendons, which connect muscles to bones, are strong, adaptable, fibrous bands of tissue. Tendonitis is the medical term for the inflammation, irritation, or tiny tearing of tendons. Tendons come in a variety of sizes, such as the delicate, minuscule bands in the hands or the thick, rope-like cords that hold the calf or thigh muscles in place. The disease typically develops for one of two reasons:
Overuse: A particular body motion is repeated too often.
Overload: When the intensity of a certain activity, like weightlifting, is abruptly raised.