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. 2018 Aug 15;12(3):362–370. doi: 10.14444/5042

Figure 3.

Figure 3

(a) Preoperative x-rays of a patient with thoracolumbar deformity from the uncompensated cervical sagittal deformity (CSD) group. Though there is lordotic alignment of the cervical spine, there is a mismatch in T1 slope and cervical lordosis (TS-CL > 17°). Cervical plumb line, TS-CL, and CTPA are elevated. (b) Postoperative x-rays of the same patient from the uncompensated group. There has been good global correction, but there has been progression of the cervical deformity with kyphotic alignment of the cervical spine, an increase in the cervical plumb line, a progression in the mismatch of T1 slope and cervical lordosis, and an increase in the cervico-thoracic pelvic angle. Abbreviations: CL, cervical lordosis; TS, T1 slope; TPA, T1 pelvic angle; CTPA, cervico-thoracic pelvic angle; C2-C7 PL, cervical plumb line; SVA, sagittal vertical axis.