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Fig. 6 | BMC Musculoskeletal Disorders

Fig. 6

From: Impact of Spinopelvic sagittal alignment on the surgical outcomes of dropped head syndrome: a multi-center study

Fig. 6

A representative case of type3. C7 plum line was drowned in each Fig. a Preoperative lateral whole-spine standing radiograph showing chin-on-chest deformity along with spinopelvic sagittal malalignment. Preoperative parameters were as follows; SVA 86 mm, PI-LL 59°, TK 17°, LL -8°, PT 52°. b Lateral whole-spine standing radiograph at 1 month after the C3-T4 combined anteroposterior corrective fusion showing improvement in chin-on-chest deformity, but the thoracolumbar malalignment remained. Postoperative parameters were as follows; SVA 85 mm, PI-LL 60°, TK 23°, LL -9°, PT 53°. c Lateral whole-spine standing radiograph at final follow up (36 months after surgery) showing deterioration of a global sagittal balance. We proposed additional thoracolumbar correction surgery for improving low back pain and the recurrence of horizontal gaze disturbance, the medical condition of the patient did not allow additional surgery. Each parameters at final follow up were as follows; SVA 150 mm, PI-LL 75°, TK 25°, LL -24°, PT 60°. SVA: sagittal vertical axis, PI-LL: pelvic incidence minus lumbar lordosis, TK: thoracic kyphosis, LL: lumbar lordosis, PT: pelvic tilt

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