EMPLOYEE WAS LIFTING 10 LB. METAL BOWLS OUT OF GRINDING MACHINE IN LABORATORY. EE TWISTED AT THE WAIST & LEANED TOWARDS MACHINE INSTEAD OF STEPPING OVER TO IT. WHILE LIFTING THE 10 LB. BOWL WITH HIS LT. ARM, EE FELT PAIN & TIGHTNESS IN LT. SHOULDER BLADE AREA. DIAGNOSED AS LT. RHOMBOID STRAIN W/SPASM.