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Understanding Sprains and Strains

Sprains and strains are used interchangeably to describe everything from a twisted ankle to a pulled hamstring, but they are two specific injuries.

  • A sprain is a stretch or tear in a ligament (the bands of fibrous tissue that connect our bones at the joints).
  • A strain is also a stretch or tear, this time affecting the muscle itself or a tendon (the tissue that connect the muscles to the bones).

How Does a Sprain or Strain Occur?

Sprains usually happen when a person falls, twists, or is hit in a way that forces the body out of its normal position. The most common type of sprain is a sprained ankle; about 25,000 people sprain an ankle every day. Think of a runner who goes over a curb and catches her foot, twisting the ankle; or a baseball player who slides into home plate and twists his knee.

Wrist and thumb sprains are also common, particularly in sports like skiing, where it’s not unusual to fall and land on an outstretched palm.

Strains happen when a person twists or pulls a muscle or a tendon. Athletes in contact sports, like football, hockey, and boxing, are at particularly high risk for strains. Frequent repetitive motions, like those used in tennis, rowing, and golf, can lead to strains of the hand and forearm.

In the workplace, people at particular risk for sprains and strains are those who engage in frequent heavy lifting, which can include everyone from construction workers and laborers to warehouse workers, nurses, and physical therapists.

How Can You Detect a Sprain or Strain?

The signs of most sprains or strains are very similar: pain and inflammation, and sometimes bruising, at the injured area. Depending on the severity of the sprain or strain, the pain may be mild, moderate, or severe.

The more severe the sprain or strain, the more difficult it is to use the affected area. Someone with a mild ankle sprain may just favor that ankle slightly, while a more severe ankle sprain may cause much more pain and make it difficult or impossible to walk.

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