Fig. 6From: A study of screw placement to obtain the optimal pull-out resistance of lumbar pedicle screws—analysis of Hounsfield units measurements based on computed tomographyComparison of HU values of L1-L5 parts in different disease types groups (a, b). There was no difference in different parts of L1-L5 for patients with lumbar spondylolisthesis and osteoporosis (c)Back to article page