What is Bone X-ray (Radiography)?
An x-ray (radiograph) is a painless medical test that helps physicians diagnose and treat medical conditions.  Radiography involves exposing a part of the body to a small dose of ionizing radiation to produce pictures of the inside of the body. X-rays are the oldest and most frequently used form of medical imaging. A bone x-ray makes images of any bone in the body, including the hand, wrist, arm, foot, ankle, knee, leg or spine.

What are some common uses of the procedure?
A bone x-ray is used to:

• determine whether a bone has been fractured or if a joint is dislocated

• ensure that a fracture has been properly aligned and stabilized for healing following treatment

• determine whether there is a build up of fluid in the joint or around a bone

• guide orthopedic surgery, such as spinal repair, joint replacement and fracture reductions

• evaluate injury or damage from conditions such as infection, arthritis, abnormal bone growths or other bone diseases, such as osteoporosis

•  assist in the detection and diagnosis of cancerous tumors

•  locate foreign objects

• evaluate changes in bones structure

How does the procedure work?
X-rays are a form of radiation like light or radio waves.   X-rays pass through most objects, including the body.  Once it is carefully aimed at the part of the body being examined, an x-ray machine produces a small burst of radiation that passes through the body, recording an image on photographic film or a special image recording plate.
Different parts of the body absorb the x-rays in varying degrees. Dense bone absorbs much of the radiation while soft tissue, such as muscle, fat and organs, allow more of the x-rays to pass through them. As a result, bones appear white on the x-ray, soft tissue shows up in shades of gray and air appears black.
X-ray images are maintained as hard film copy (much like a photographic negative) or, more likely, as a digital image that is stored electronically. These stored images are easily accessible and are sometimes compared to current x-ray images for diagnosis and disease management.

How is the procedure performed?
The technologist, an individual specially trained to perform radiology examinations, positions the patient on the x-ray table and places the x-ray film holder or digital recording plate under the table in the area of the body being imaged. When necessary, sandbags or pillows will be used to help the patient hold the proper position. A lead apron may be placed over the patient's pelvic area to protect it from radiation.
The patient must hold very still and may be asked to keep from breathing for a few seconds while the x-ray picture is taken to reduce the possibility of a blurred image. The technologist will walk behind a wall or into the next room to activate the x-ray machine.
The patient may be repositioned for another view and the process is repeated. At least two images (from different angles) are usually captured and sometimes three images are needed.
An x-ray may also be taken of the unaffected limb, or of a child's growth plate (where new bone is forming), for comparison purposes.
When the examination is complete, the patient will be asked to wait until the technologist determines that the images are of high enough quality for the radiologist to read.
A bone x-ray examination is usually completed within 5 to 10 minutes.

What are the benefits vs. risks?
Benefits:

• Bone x-rays are the fastest and easiest way for a physician to view and assess broken bones and joint and spine injuries

• X-ray equipment is relatively inexpensive and available in all of the ROC physician offices, making it convenient for both patients and physicians.

•  Because x-ray imaging is fast and easy, it is particularly useful in timely diagnosis and treatment

•  No radiation remains in a patient's body after an x-ray examination

• X-rays usually have no side effects

Risks:

• During a single x-ray exposure, a patient is exposed to approximately 20 milliroentgens of radiation. We are all exposed to approximately 100 milliroentgens of radiation each year from sources like the ultraviolet rays of the sun and small traces of radioactive isotopes, such as uranium, in the soil

• Women should always inform their physician or x-ray technologist if there is any possibility that they are pregnant

What are the limitations of Bone X-ray?

While x-ray images are among the clearest, most detailed views of bone, they provide little information about the adjacent soft tissues. An MRI in may be more useful in identifying ligament tears and joint effusions in knee or shoulder injuries and in imaging the spine, because both the bones and the spinal cord can be evaluated. MRI can also detect a bone bruise when no crack is visible on x-ray images.