Picture of Hamstring Muscle
The hamstrings are large muscles and tendons that are located behind the thighs and knees. The hollow area flanked by the hamstring tendons is called the popliteal space. A pulled hamstring is one of the most common sports injuries that can occur. The injury may occur in runners and those who play soccer and basketball.
Text References: "Hamstring Muscle Complex: An Imaging Review." RadioGraphics. "Hamstring Muscle Injuries." American Academy of Orthopaedic Surgeons.