Tendons are the tough fibers that connect muscle to the bone. Tendinitis occurs when those fibers are irritated or damaged.
Most tendon injuries occur near joints, like the knee, ankle, elbow and shoulder. Musculoskeletal ultrasound can be used to diagnose this condition.
Achilles tendinitis, or tendonosis, is a common condition among athletes affecting the tissue that connects the heel to the calf muscles. Achilles tendinitis is most often caused by overuse or repeated movements. Achilles tendon rupture is a different but related condition commonly found in performance athletes.
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