In auto accident one year ago. Initial main injury was low back pain, numbness in whole left leg (including foot). Most of numbness is gone but comes back when sitting more than 30 minutes (especially in moving vehicle). After numbness down, pain in top of left thigh, knee, shin, periodic severe pain in left foot. Only relieve is to lay on stomach with legs straight. Saw Chiropracter, Physical Therapy, Acqua Therapy, Internal Med Dr., Pain Clinic Dr. No one knows why I continue with problem or what caused original symptoms.