Strains, Muscle

Strains often occur in muscles that move two joints, for example, the hamstring muscles that flex the knee and extend the hip joint. These are caused by overstretching or eccentric overload and are located in the muscle-tendon junction. These ruptures occur as a result of the intrinsic force generated in the athlete's muscles, often in the change between eccentric and concentric traction, which is common in high-speed sports and accounts for 10% to 40% of injuries in soccer, Australian Rules football, and American football. When the demand made on ...

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