Figure 2From: Posterior short segment pedicle screw fixation and TLIF for the treatment of unstable thoracolumbar/lumbar fracture Percentage of anterior body height compression (% ABC). Percentage of anterior body height compression (% ABC) is calculated by the formula: % ABC = 100 - 2a/(b + c) 100, where a is the height of fractured vertebra; b is the height of the proximal vertebra; and c is the height of the distal vertebra (A). B is an example measured by the PACS measurement software.Back to article page