Pulled Hamstring (cont.)
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Pulled Hamstring (Hamstring Injury) Causes
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A pulled hamstring is a common term that refers to a strain of one or more of the hamstring muscles. Muscle fibers of the hamstring can become strained or torn during running, kicking, or even walking down steps. When a hamstring muscle is pulled, the muscle fibers are abruptly stretched. Depending on the severity of the strain injury, the muscle can actually tear and many people can hear and feel an audible "pop" when the muscle is damaged.
The hamstring pull may occur anywhere along the muscle tendon anatomy, however it most commonly occurs in the middle of the hamstring muscle.
As people age, the tendon can be injured where it inserts into the ischial tuberosity in the pelvis and cause groin or hip symptoms. On occasion, the tendon injury can avulse or pull a small part of bone away from that insertion point.
Avulsion injuries often occur with a quick muscle contraction when a burst of speed is needed. This occurs in activities like ice skating, weightlifting, or skiing. Otherwise, it is the muscle body that tends to be injured in a noncontact activity.
There are a variety of potential risk factors for hamstring injuries.
Medically Reviewed by a Doctor on 11/5/2014
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