Muscle injuries range from a mild strain (sometimes referred to as pulling a muscle), in which the muscle fibers are overstretched, to a complete tear.
Strains and tears often occur as a result of heavy physical work or overstrenuous activity during sports.
Almost any muscle can be strained or torn; those commonly affected include muscles in the lower back, legs, and groin. Typical symptoms may include pain in the affected muscle during use and sometimes also at rest; swelling and bruising in the affected area; and muscle spasms (painful muscle contractions).
Most cases can be treated with PRICE (Protection, Rest, Ice, Compression, Elevation) and pain relievers.
A doctor may also recommend physical therapy or immobilizing the affected area with a splint, brace, or cast. A severe injury may require surgery to repair the damaged muscle

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