Sprains and Strains - Causes

SPRAIN 
A sprain occurs when a ligament, the tough band that connects one bone to another bone, is stretched too far or torn.  You can get a sprain when there is a blow to a joint, the area where two bones meet. For example, when a soccer ball hits your ankle with great force, the ankle joint is knocked out of its normal position so that the ligament in this joint is either overstretched or torn.  Sprains can occur in any joint, including the shoulder, hips, ankles, wrists, spine, knee, elbow, neck, and thumb. 

STRAIN
A strain occurs when either a muscle or a tendon, the tough tissue that connects your muscles to a bone, is stretched or torn. You can get a strain if you twist or pull a muscle or tendon. For example, if you use improper techniques when lifting heavy boxes, you can easily pull a muscle. Strains can also develop over time. For example, you may also get a strain if you move the muscles or tendons over and over again.

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