The statistical distribution of members of a population around the population mean. In a gaussian distribution, 68.2% of values fall within Â± 1 standard deviation (SD); 95.4% fall within Â± 2 SD of the mean; and 99.7% fall within Â± 3 SD of the mean. Synonym(s): bell-shaped curve, normal distribution.
Located on the bony extensions of the vertebrae, the surfaces of the facet joints fit together like a three-dimensional puzzle. In the spaces between vertebrae run the nerve rootsâexits off the spinal cord's information highway.
In regards to the facet joint injections they states that the accuracy of facet joint nerve blocks is strong in the diagnosis of lumbar and cervical facet joint pain. With a minimal amount of risks, facet joint injections are considered an appropriate non surgical treatment for many patients who suffer from back pain. The associated risks with this procedure involve misplacement of the needle, either advancing the needle too deeply or positioning it incorrectly.