EE WAS CHANGING OUT THE SCREEN CLOTH ON DECK 403-5. AS HE STEPPED DOWN ONTO THE GRATING, HIS LEFT FOOT CAUGHT THE GRATING, TWISTING HIS LEFT LEG. DIAGNOSED WITH LOW BACK PAIN AND SCIATICA. TRE ATED WITH DRUGS AND PHYSICAL THERAPY. RECEIVED CHART NOTES ON 5-21. CONSIDERED MEDICAL TREATMENT.