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?

Table 4 Comparisons of correction rates of different deformity parameters in screw/hook group and non-screw/hook group (\(\overline{x }\)±s)

Correction rate (%)	Screw/hook group (n = 37)	Non-screw/hook group (n = 16)	P value
Main curve (%)	58.7 ± 16.0	30.9 ± 12.4	0.003*
Focal kyphosis (%)	49.8 ± 13.4	26.9 ± 10.4	0.148
Intraspinal rib length (%)	63.1 ± 31.3	30.1 ± 20.7	0.008*
DRCSSC (%)	-40.0 ± 26.1	-27.3 ± 17.6	0.203
Rib-vertebrae angle (%)	17.6 ± 9.7	7.2 ± 3.6	0.006*
Vertebral-sternum angle (%)	24.4 ± 11.0	11.9 ± 11.3	0.007*
Vertebral translation (%)	61.8 ± 18.8	35.1 ± 16.6	0.001*
Height of main curve (%)	16.3 ± 9.2	11.9 ± 7.7	0.363

^*Statistically significant (p value < 0.05)
DRCSSC Distance between the rib head tip and the most concave spot of the spinal canal

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