x-ray review questions

Explain how a modern x-ray is able to create an image of bone and tissues.

-send electron beams through the soft tissue of the body and are blocked by denser bone and tissues -What is left after the electron beam passes through the body is captured on a film, or more commonly a receiver, that creates a digital x-ray. -X-rays are able to pass through the human body but are slowed down by denser material, like the calcium in bones.

What are the differences between closed/simple and open/compound fractures?

A closed or simple fracture stays within the skin, while an open or compound fracture breaks through the skin surface.

What are the differences between a displaced and a non-displaced fractures?

A displaced fracture occurs when the bone breaks and the ends no longer line up straight, while in a non-displaced fracture the bones still line up straight.

What is a dislocation?

Dislocation is the displacement of bones at the joint, and is often caused by impact trauma to that joint.

Why can they sometimes be more damaging than a fracture?

Dislocations can often be more damaging and painful than fractures, since damage of the joint capsule and surrounding ligaments and tendons often take much longer to heal than bone tissue due to lack of vascularization.

What is a fracture?

Fractures are a common occurrence and result when a physical force that is greater than the strength of the bone is exerted

Who discovered x-ray technology? When?

Wilhelm Roentgen, 1895

Give three examples of the medical uses of x-rays.

X-rays are primarily used to diagnose injury or disease to bones, joints, and internal organs.

A weightlifter has pain in his hamstring after trying to deadlift 600 lbs:

avulsion

A man's leg is crushed between two cars:

comminuted

A woman gets her foot caught in a gopher hole and twists when she falls:

oblique