The skeletal framework of our body is made of muscles and bones. The muscles are attached to the bones at one of their ends by tough shiny white structures called tendons. The forces applied to a tendon may be more than 5 times your body weight. In some rare instances, tendons can snap or rupture. A tendon rupture can be a serious problem and may result in excruciating pain and permanent disability if untreated.
Conditions that make a rupture more likely include the injection of steroids into a tendon, certain diseases such as gout, hyperparathyroidism, tendinitis and injuries. Tendon rupture has also been associated with a class of antibiotics known as fluoroquinolones.

The 4 most common areas of tendon rupture are as follows:
Quadriceps -Often called the quads, this group of muscles is used to extend the leg at the knee and aids in walking, running, and jumping.

Achilles -This tendon is located on the back (posterior) portion of the foot just above the heel. Rotator cuff -This group of muscles functions to raise your arm out to the side, helps you rotate the arm, and keeps your shoulder from popping out of its socket. And the Biceps.

Tendon ruptures can usually be diagnosed by clinical assessment. X-rays and ultrasound are used to establish or confirm the diagnosis but MRI gives the most definitive information about the nature and extent of the rupture.

All ruptured tendons, regardless of site, follow standard RICE (Rest, Ice, Compression, and Elevation) home therapy procedure as you seek medical attention.

Resting the affected extremity. Ice application to the affected area. Compression of the affected area to minimize swelling. Elevation of the extremity if possible: Try to keep the area above the level of your heart to minimize swelling.