Hamstring injuries are common among active and athletic individuals, especially those involved in high-speed running, distance
running, or sports requiring sudden directional changes. Acute hamstring strains often occur as an eccentric strain during running or astretch-type injury caused by simultaneous hip flexion and knee extension. Proximal hamstring tendinopathy is an overuse injury of the
hamstring tendon as a result of chronic cicatrization of the musculotendinous unit