Article Figures & Data
Figures
- Fig. 1
Intraoperative fluoroscopic screening after patient positioning and prior to balloon inflation. Percentage anterior (A) height loss = {1-Af/[(As + Ai)/2]} × 100; and percentage posterior (P) height loss = {1-Pf/[(Ps + Pi)/2]} × 100. (C) The Cobb angle is calculated form the superior endplate of the vertebra above and the inferior endplate of the vertebrae below the fracture vertebra. In cases where two consecutive levels were fractured, a four-level Cobb angle was calculated. (D) The wedge angle was determined as the angle between the superior and inferior endplates of the collapsed index vertebral body.
- Fig. 2
Schematic representation of the Reverse Thomas Position.
- Fig. 3
Changes in anterior and posterior height, and wedge and kyphosis (Cobb) angles preoperative, intraoperatively and postoperatively. A positive Cobb angle denotes an overall kyphosis and negative denotes an overall lordosis of the lumbar spine.
- Fig. 4
Schematic representation of the additional ligamentotaxis of the anterior longitudinal ligament (ALL) achieved by pelvic anteversion. Note the attachment of the ALL to the intervertebral discs, sacral promontory, and the upper and lower edges of each vertebral body, allowing for distraction across fracture site.
Tables
Demographic Variables Percentage / Number of Fractures Gender Male 33.3 / 7 Female 66.6 / 14 Age Under 40 years old 28.6 / 6 40 to 60 years old 19 / 4 Mechanism of Injury Trauma 61.9 / 13 Metastasis 19 / 4 Insufficiency 19 / 4 Vertebral Level T11 23.8 / 5 T12 33.3 / 7 L1 42.9 / 9 Mean P Value Confidence Interval (CI) Anterior Height (Post – pre positioning) 0.07 of original height 0.15 -0.28 to 0.17 Posterior Height (Post – pre positioning) 0.04 of original height 0.014 0.009 to 0.07 Wedge Angle (Post – pre positioning) 3.6° 0.002 1.5 to 5.7 Kyphosis Angle (Post – pre positioning) 4.7° 0.004 1.6 to 7.09
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