The spine is the bone in mid-line of back. it is not single bone - many pieces stacked on each other. In between pieces, there is disc. If disc becomes weak, bone may slip.
The spinal cord
is inside the spine. Nerves go out between the pieces.
So slip may press the cord or the nerve. The nerve may become weak. Pressure on cord can cause paralysis
So you have to see nerve specialist - to prevent or treat.