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Fig. 2 | Journal of Orthopaedic Surgery and Research

Fig. 2

From: Comparison of safety and efficacy of posterior lumbar interbody fusion (PLIF) and modified transforaminal lumbar interbody fusion (M-TLIF) in the treatment of single-segment lumbar degenerative diseases

Fig. 2

Measurement of relevant data on lateral X-ray. Lumbar lordosis angle (LL) [13] refers to the angle perpendicular to two straight lines A and B, A is parallel to the endplate of L1 vertebra, and B is parallel to the endplate of S1 vertebra. The segmental lordosis angle (SL) refers to the angle perpendicular to the two straight lines C and D, C is the parallel line to the upper endplate of the vertebral body, and D is the parallel line of the superior endplate of the inferior vertebral body. The intervertebral foramen height (IFH) is the vertical line between the lower edge of the pedicle of the upper vertebral body and the upper edge of the pedicle of the lower vertebral body, that is, a yellow straight line. The height of sagittal intervertebral space (S-ISH) = (AH + MH + PH)/3. RH, MH and LH are the heights of anterior, middle and posterior intervertebral space, respectively

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X