. 2019 Oct 29;11(5):762–769. doi: 10.1111/os.12543
© 2019 The Authors. Orthopaedic Surgery published by Chinese Orthopaedic Association and John Wiley & Sons Australia, Ltd.
This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Figure 3.
LL: The angle between the tangent of L1 and S1 endplate.