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What’s Causing Pain in the Back of My Knee?

Hamstring injury

A hamstring is a group of three muscles that run down from the buttock to the back of your thigh. These include;

  • Biceps femoris muscle
  • Semitendinosus muscle
  • Semimembranosus muscle

The hamstring muscles allow the bending of the knee joint. Injuring one or more of these muscles is medically termed as a hamstring strain or a pulled hamstring.

Too much stretching of the hamstring muscles cause hamstring strain, which can take months to heal. As a result, you will feel a sudden pain behind the knee joint. Injury to the biceps femoris muscle is called biceps femoris tendinopathy. It causes sharp pain in the knee. Other common symptoms include:

  • Weakness in the back of your leg
  • Swelling
  • Bruising

Hamstring injury is common in professional athletes who took part in sports like tennis, soccer, and basketball. Studies have shown that stretching the muscles before play can minimize the chances of a hamstring injury.

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