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Radiography is one of the main methods for diagnosing spinal diseases. In particular, an X-ray of the lumbar spine makes it possible to assess the condition of the vertebrae, the sacral area, and the intervertebral spaces, as well as to identify the consequences of injuries, degenerative changes, and other disorders.

The examination is prescribed for lower back pain, limited mobility, numbness, or weakness in the legs. In some cases, an X-ray helps to suspect such pathologies as intervertebral hernias, spinal curvature, or the consequences of traumatic injuries.

To obtain clear and informative images, it is important to prepare properly for the examination. In this article, we will consider the features of preparation for the examination, and also explain what exactly an X-ray of the lumbosacral spine can show.

What an X-ray of the lumbosacral region shows

An X-ray of the lumbosacral spine makes it possible to assess the condition of the bone structures of the lower part of the spine and identify changes that may be the cause of pain or limited mobility. During the examination, the doctor analyzes the position of the vertebrae, their shape, height, and relative arrangement.

The following can be identified on X-ray images:

  • the consequences of injuries — cracks, fractures, or compression injuries of the vertebrae;
  • spinal curvature, in particular scoliosis or pathological lordosis;
  • displacement of the vertebrae relative to each other;
  • degenerative changes that develop with osteochondrosis or age-related changes;
  • bone growths (osteophytes), which may occur due to prolonged stress on the spine.

Another important indicator is the condition of the intervertebral spaces. Their narrowing may indicate wear of the intervertebral discs or other degenerative processes. Such changes are often accompanied by lower back pain, stiffness of movement, or pain radiating to the lower limbs.

The obtained images make it possible to assess the general condition of the lumbosacral segment of the spine and determine whether there are intervertebral hernias, and whether additional examination methods are needed to clarify the diagnosis.

What is visible on an X-ray of the lumbosacral region

During the analysis of X-ray images, the doctor carefully evaluates the anatomical structure of the lumbosacral segment of the spine, the position of the vertebrae, and the features of their structure. The examination makes it possible to identify various structural changes in bone tissues.

The following may be visible on an X-ray of the lumbosacral region:

  • changes in the shape and structure of the vertebral bodies;
  • deformities or displacement of the vertebrae;
  • signs of compression injuries after trauma;
  • congenital anomalies of spinal development;
  • bone growths (osteophytes);
  • densification or other changes in bone tissue;
  • structural features of the sacral bone and the sacroiliac joints.

Such changes help the doctor assess the condition of the lumbosacral spine and determine whether additional examinations are needed to clarify the diagnosis and choose further treatment tactics.

How to prepare for an X-ray of the lumbosacral region

To obtain the clearest and most informative images, it is important to prepare properly for the examination. Preparation for an X-ray of the lumbosacral spine is usually simple, however, some recommendations help improve the accuracy of the examination.

Before the procedure, the patient needs to remove all metal objects in the area of the abdomen, waist, and pelvis. Jewelry, belts, buttons, or other metal elements may create interference on the image and affect the quality of the X-ray image.

It is also important to inform the doctor or radiologist about the presence of chronic diseases, previous spinal injuries, or prior examinations. This helps to correctly assess the obtained results and compare them with previous data.

In most cases, no special preparation is required before the examination. Following simple recommendations before the procedure helps avoid extraneous artifacts on the images and ensures a more accurate assessment of the condition of the lumbosacral spine.

How an X-ray of the lumbosacral spine is done

Before the examination begins, the patient is asked to remove clothing down to the waist and take off all metal objects in the area of the abdomen, lower back, and pelvis. Metal elements may create shadows on the images, so they must be removed before the examination.

After preparation, the patient takes a position on the X-ray table or stands near the machine — this depends on the purpose of the examination and the doctor's recommendations. Most often, images are taken in frontal and lateral projections, which makes it possible to carefully assess the structure of the lumbosacral segment of the spine.

In some cases, functional tests may be performed. Then radiography is carried out during flexion and extension of the torso in order to assess the mobility of the vertebrae and possible displacements.

During image acquisition, the patient needs to remain still. The radiation itself lasts only a few seconds, after which the image is transferred to a computer for analysis. The obtained images are evaluated by a radiologist. The results may be provided to the patient in digital format or in the form of printed X-ray images. To establish an accurate diagnosis, a doctor's consultation is necessary, during which the doctor will take into account the results of the examination, the symptoms, and the data of other examinations.