A posture analyzer for analyzing a patient's spine having an upright standard secured to a base resting on a floor. A rectangular frame has one side frame member secured to the upright standard at a selected height. The frame member supports a markable panel, which panel includes an orthogonal grid pattern and a normal spine depiction on the panel. A bar holder is slidably secured to a second side frame member. The bar holder is moveable in the vertical direction along the second side frame member. The bar holder includes means for slidably holding a bar which extends in a horizontal direction parallel to the planar surface of the panel. A roller is secured to an end of the bar for rolling up and down a patient's spine, and a pen is secured to the opposite end of the bar for marking on the planar surface of the panel. When the roller is moved vertically and horizontally along a patient's spine, the pen makes a corresponding tracking mark on the panel.