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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Could screw/hook insertion at the apical vertebrae with rib head dislocation effectively retract the corresponding rib head from spinal canal in dystrophic scoliosis secondary to type 1 neurofibromatosis?

Fig. 1

Illustration of the measurements of the intraspinal rib length (IRL), the distance between the rib head tip and the most concave spot of the osseous spinal canal (DRCSSC), the rib-vertebral angle (RVA), the vertebral-sternum angle, the spinal height and the vertebral translation. A IRL (line a). B DRCSSC (line b). C RVA (α). D Vertebral-sternum angle (β). E The height of main curve (line e) and the vertebral translation (line f). c and d are the lengths of the superior endplate of the upper end vertebra of the main curve and the inferior endplate of the lower end vertebra of the main curve, respectively. Line e is defined as the height of main curve which is formed by the midpoints of line c and d. Line f is the vertebral translation presenting the centrum of vertebra with dislocated rib head translating away from line e

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