<prompt> TB spine most commonly affects?Lumbar vertebraCervicalThoracicSacral  <response>: ANSWER: C ThoracicREF: Tuberculosis of skeletol system SM tuli 3rd e p, 192Important points about skeletal TBMost commonSite: vertebralSite in vertebra: lowerthoracic or dorsolumbar Route of spread: hematogenousType: paradiscalSymptom: back pain 