Fig. 1From: Prediction and trend of tactile acuity, pain and disability in acute LBP: a six-month prospective cohort studyTime course of the vertical TPDTs over 6 months. T1: timepoint 1 (< 4 weeks), T2: timepoint 2 (3 months), T3: timepoint 3 (6 months). TPDT: Two-point discrimination threshold measured with a plastic calliper ruler in vertical and horizontal direction from 1-10 cmBack to article page