Occupational stress - The discomfort caused by the physical and mental state of body due to an occupation.
MRI - Magnetic Resonance Imaging. It is a diagnostic method, which uses magnetic resonance to give out the image of the scanned structure.
Ergonomics - An applied science concerned with studying the structure of a person and designing and arranging items like furniture so that these are most effectively and safe for the proper functioning of the body. (Human Engineering)
De-compression - Surgical way of removing narrowing bone and disc, that compresses the nerves of the spinal cord.