There are four common areas in the body where ruptured tendons generally occur. These include your:
Patellar tendon: Four large muscles in the upper leg (quadriceps) are attached to the kneecap by the patellar tendon.
Achilles tendon: Occurs where the calf muscle attaches to the heel of the foot.
Biceps tendons: Tendons that attach the biceps to the elbow and shoulder may also suffer injuries. Ripping is more common for proximal (shoulder tendon) injuries than for distal (elbow tendon) injuries.
Rotator cuff tendon: One of the most common types of tendon injuries occurs in the shoulder where four muscles converge together to make up the rotator cuff.
While these injuries affect different areas of the body, they do share some common causes. For example, direct trauma or excessive strain to the area from sports, heavy lifting, or falls and accidents can cause the tendon to rupture. Additionally, as we age, our tendons may weaken due to repetitive activities, poor blood supply to the area, and chronic inflammation of the tendons.