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.
Facet Joint Arthropathy. Sections. Facet joint arthropathy refers to a degenerative disease that affects the joints of the spine and the disintegration of cartilage on those joints. Understanding certain medical terms and a general anatomy of the spine is an important first step in pursuing a correct diagnosis and treatment of this condition. First, you should be aware that facet joint arthropathy can go by other names, such as facet joint arthrosis or, most commonly, facet joint osteoarthritis.