Editing Schmorl's nodes (section)

==Causes==
Schmorl's nodes are fairly common, especially with minor degeneration of the aging spine, but they are also seen in younger spines. Schmorl's nodes often cause no symptoms, but may simply reflect that "wear and tear" of the spine has occurred over time; they may also reflect that bone strength was at one time somewhat compromised, perhaps due to a vitamin D deficiency although this has yet to be confirmed with studies, or if heavy lifting is done at a young age before the vertebral bodies are completely ossified such as in young farm workers. There is also a strong heritability of Schmorl's Nodes (>70%).<ref name="Williams" /> While often non-complicating, Schmorl's nodes also tend to occur more often in cases of spinal deformity, specifically [[Scheuermann's disease]]. These defects are caused when the vertebra loses its normal function and is not moving/hypomobile/subluxated.  During this time the forces normally distributed by the nucleus pulposus (the incompressible gelatinous center of the intervertebral disc) are concentrated in a certain area causing endplates to deform in a concave manner.{{cn|date=November 2022}}