With subjects exceeding a certain workload level, a semi-standardized expert interview was performed, documenting the intensity, frequency, and duration of all spine-related exposures induced by manual materials handling, trunk inclination and twisting, and whole-body vibration for the entire working life of each subject [ 7].
After 1 week of light exposure, spine turnover and motility decreases (Tropea et al. 2010) which could represent synapse stabilization by LTP.
In addition, increases in dendritic spine density following exposure to estrogens have been observed in primary hippocampal neurons (Murphy and Segal, 1996), cortical neurons (Srivastava et al., 2008) and in cortical and hippocampal neurons of adult rats (Inagaki et al., 2012; Woolley and McEwen, 1992).
Lumbar spine surgeries require adequate exposure to visualize key structures and limited exposure can make surgery more technically difficult, thus increasing the potential for complications.
Further research is required to develop better measures of undergraduate physiotherapy training exposures, lifetime occupational and sports exposures, and a better understanding of the forces on the spine resulting from these exposures related to LBP.
This finding holds special implications for the spine surgeon, as radiation exposure in spinal surgery has been demonstrated to be 10 12 times that of other musculoskeletal surgeries and has the potential to exceed recommended yearly allowances [ 28].
The novel finding of the present study was that rapid structural changes in hippocampal spines were induced by exposure to a novel, enriched environment.
Furthermore, the length of the tail-spine increased significantly with exposure to Notonecta as compared to both the control (P <0.001; Table 1) and Triops-induced daphnids (P <0.001; Table 1).
Minimal access spinal technologies aim primarily at minimizing the trauma associated with surgical exposure of the spine.
Previous analyses of postmortem mouse brains have shown that repeated cocaine use and withdrawal changes dendritic spine density after weeks of exposure.
