First lumbar vertebral segment: colon dysfunction, constipation, diarrhea, lumbago. Second lumbar vertebral segment: lower abdominal pain, lumbago, hypogonadism. Third lumbar vertebra segment: bladder, low urine, lumbar and medial knee pain and weakness. Fourth lumbar vertebra segment: lumbar pain, sciatica, difficulty urinating, frequent or scanty urination, leg pain radiating to the outside of the leg belly, hemorrhoids. Fifth lumbar vertebra: poor blood circulation in the legs, weakness of the lower limbs and fear of cold, lumbar and leg pain and numbness to the back and outside of the leg belly, menstrual disorders. Sacral vertebrae: lumbosacral joint lesions, foot root pain and numbness, bladder disease, prostatitis Caudal vertebrae: tailbone pain