Correlation Analysis between Tamoxifen and Lumbar Intervertebral Disc Degeneration: A Retrospective Case-Control Study

Figure 1

Lumbar lordosis (LL) and lumbar disc height index (DHI) measurements. (a) LL: the angle between the tangent line of the upper endplate of the L1 vertebral body and S1 vertebral body in the lateral lumbar spine. (b) DHI: (intervertebral leading-edge height + posterior edge height)/(intervertebral upper body width + lower body width) 100%, where a is the intervertebral upper body width, b is the intervertebral lower body width, c is the intervertebral anterior edge height, and d is the intervertebral posterior edge height.

(a)

(b)