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Fig. 4 | Journal of Orthopaedic Surgery and Research

Fig. 4

From: Deformity angular distance ratio independently predicts intraoperative neuromonitoring alerts in spinal deformity correction

Fig. 4

A 25-year-old female with idiopathic scoliosis underwent posterior column osteotomies (PCO) at T5–T8 and posterior spinal instrumentation from T3 to T12. Intraoperative neuromonitoring (IONM) remained stable, with no new postoperative neurological deficits. (a) Preoperative anterior-posterior and (b) lateral whole-spine radiographs demonstrate a T4–T9 coronal curve measuring 52.5°, with preserved sagittal alignment. The coronal deformity angular ratio (C-DAR) was calculated as 8.8 (52.5/6), and the coronal deformity angular distance ratio (C-DADR) was calculated as 3.8 (52.5/13.9). Postoperative day 5 (c) anterior-posterior and (d) lateral radiographs show successful correction of the major curve to 13.1°

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X