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Fig. 2 | BMC Surgery

Fig. 2

From: Effects of combined adjustable Halo-pelvic fixation brace on cervical spine alignment in patients with severe rigid spinal deformity

Fig. 2

Radiographic evaluation of sagittal alignment of cervical spine. A a C2L-C7L angle. b C2L-C7U angle. c C2L-C6L angle. d C2L-C6U angle. e C2L-C5L angle. B SCA: the angle is defined between the parallel line of C7 lower endplate and the straight line joining the midpoint of the C7 lower endplate and the midpoint of the sella turcica. T1 slope or C7 slope: the angle between the superior endplate of T1 or C7 and horizontal line. C2-C7 SVA: the distance from the posterior, superior corner of C7 to the vertical line from the centroid of C2. C C2-T1 Ha: draw the parallel line of C2-T1 vertebral body posterior edge and add the angle of two adjacent vertebral body posterior edge parallel lines. C0 slope: the angle between the horizontal and cranial ring of C0. C0-C2 angle: the angle between the cranial ring and C2 lower endplate

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BMC Surgery

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