(HealthDay News) -- Injuries are common in the hamstring -- the muscle at the back of the thigh -- notably among athletes.
The American Academy of Orthopaedic Surgeons mentions these common symptoms of hamstring injury:
- A severe and sudden pain in the back of the thigh, particularly if running at full speed.
- Swelling of the hamstring that usually appears within a few hours of the injury.
- A discoloration of the skin that appears below the back of the knee within a few days of the injury.
- Feeling that the hamstring muscle is weak.