Achilles (uh-KILL-eez) tendon rupture is an injury that affects the back of your lower leg. It mainly occurs in people playing recreational sports, but it can happen to anyone.

One of the most common knee injuries is an anterior cruciate ligament sprain or tear. 
Athletes who participate in high demand sports like soccer, football, and basketball are more likely to injure their anterior cruciate ligaments.

Ankle injuries can happen to anyone at any age. However, men between 15 and 24 years old have higher rates of ankle sprain, compared to women older than age 30 who have higher rates than men. Half of all ankle sprains occur during an athletic activity. Every day in the U.S., 25,000 people sprain their ankle. And more than 1 million people visit emergency rooms each year because of ankle injuries. The most common ankle injuries are sprains and fractures, which involve ligaments and bones in the ankle. But you can also tear or strain a tendon.

The most common and least serious type of traumatic brain injury is called a concussion. The word comes from the Latin concutere, which means “to shake violently.

A shoulder dislocation occurs when the round ball at the top of the upper arm bone, or humerus, leaves the socket in the shoulder blade, or scapula. That means the ball and socket bones of the shoulder are separated, with the ball of the humerus out of position.

Medial epicondylitis (golfer’s elbow) is a condition in which the bony bump at the inside of the elbow is painful and tender. The elbow joint is made up of the humerus bone in the upper arm and the ulna in the lower arm. The bony bumps at the bottom of the humerus are called epicondyles. Overuse of the muscles and tendons of the forearm and elbow are the most common reason people develop medial epicondylitis. Repeating some types of activities over and over again can put too much strain on the elbow tendons. Shoveling, hammering and gardening can all cause golfer’s elbow. In some cases, the symptoms of medial epicondylitis are due to inflammation.

A groin pull is an injury to the muscles (a muscle strain) of the inner thigh. The groin muscles, called the adductor muscle group, consists of six muscles that span the distance from the inner pelvis to the inner part of the femur (thigh bone).

Unfortunately, hamstring strains are both common and painful. They strike athletes of all sorts — including runners, skaters, and football, soccer, and basketball players.

A head injury is any trauma to the scalp, skull, or brain. The injury may be only a minor bump on the skull or a serious brain injury.

Muscle strain, muscle pull, or even a muscle tear refers to damage to a muscle or its attaching tendons. You can put undue pressure on muscles during the course of normal daily activities, with sudden heavy lifting, during sports, or while performing work tasks.