EMPLOYEE STATED A METHANE DETECTOR FELL OFF THE WORK COUNTER ONTO THE FLOOR. HE BENT OVER TO PICK UP THE DETECTOR & FELT A SHARP PAIN IN HIS LOWER BACK. HE WAS DIAGNOSED WITH A LARGE PARACENTRAL DISC PROTRUSION AT L5-S1 WITH INFERIOR MIGRATION INTO THE LEFT LATERAL RECESS OF S1. THE INTERVERTEBRAL DISCS AT L2-3, L4-5 & L5-S1 DEMONSTRATE DEGENERATIVE SIGNAL ALTERATION.