Pulled Hamstring Hamstring Strain
A hamstring strain is a tear in one or more of the hamstrings muscles. there are three hamstring muscles (Semitendinosus, Semimembranosus and Biceps femoris).
That originate from the ischial tuberosity of pelvis.
And insert into the medial (inner) aspect of the tibia while the biceps femoris inserts at the head of the fibula bone.
The hamstrings helps in extending the hip and flexing the knee joints. Acute, mild to severe hamstring strains are extremely common in sprinters and hurdle jumpers and in all sports that involve sprinting activities, such as football ,cricket hockey and rugby.
During sprinting the hamstring muscles work extremely hard to decelerate the tibia as it swings out. In addition, once the foot is on the ground the hamstrings function in extending the hip back which in turn allows the other leg to move forwards. It is in this phase just before the foot strikes the ground that the hamstrings, become injured as the muscles are maximally activated and are approaching their maximum length. There are a number of factors that increase the risk of an individual to a pulled hamstring: