Hamstring strain

[Monty]

A hamstring strain is a partial tear of the hamstring muscles most commonly at the musculotendinous junction.
Hamstring strains are common among runners. Athletes at risk include those with poor flexibility of the hamstring muscles, inadequate pre-participation warm-up, and previous injury. Older athletes are also at higher risk. As with any muscle strain, the amount of force that caused the muscle to tear determines the degree of injury.