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This term, "paracentral extruded disc and a free fragment" refers to the condition of a spinal disc, so this is actually a diagnosis of what a doctor found after examining a patient's spine with an MRI or CT scan. The level of the spine is not identified, so there is no way to know if this problem possibly exists in the neck (cervical spine), not very likely in mid-back (thoracic spine) region where this problem is rare, or most likely in the low back (lumbar spine) because this is where most disc extrusions occur in the lumbar or low back area.

It is easy to understand the whole picture of what happened once the individual terms are explained:

  • Paracentral - this term refers to a part of the disc near the center of the spine, close to the spinal cord and spinal nerves, as opposed to outer ridge of disc that would be closer only to the spinal nerves
  • Extruded - this term means that not only has the disc been injured and torn, but inner jelly-like material of the disc (nucleus pulposus) has leaked out into the surrounding area and has left the confines of the disc
  • Free fragment - this means that when the disc tissue ruptured the rupture was so severe or extensive that pieces or portions of disc tissue broke off and are now moving about as separate pieces; this increases the degree of symptoms and complicates surgical correction of problem

In this case it could easily happen that the individual would experience at the level of the disc extrusion: extensive local pain, muscle weakness, numbness, tingling, radiating pain along the nerve, and more depending where the injury exists.

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Q: What is a paracentral extruded disc and a free fragment?
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