What is a hamstring strain?
A hamstring strain refers to an injury or partial tear of the proximinal hamstring muscles. A hamstring strain is a common sports injury to athletes who are required to perform quick and hard muscular movements. Hamstring injury exercises are caused by violent muscular exertions sometimes tearing away a part of the tendinous origins of the hamstrings especially to biceps femoris from the ischial tuberosity. A hamstring injury is sometimes referred to as "pulled hamstring" which may have caused by a direct blow or accidental punched at the muscle located at the back of thigh. When this happens, there may appear contusions (bruises), swelling, tearing of some of the muscle fibers and rupture of blood vessels, producing blood clot or hematoma, with a feeling of soreness. The degree of the injury sustained can be determined by its appearance and symptoms:
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