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 3 Distributions of the patients, the dislocated rib heads and the screw/hook types in screw/hook group and non-screw/hook group

	Single level	Double levels	Triple levels	Total
Screw/hook group
Patients	15	10	2	27
Dislocated rib heads	15	20	6	41
Screws	12	14	2	28
convexity	3	3	0	6
concavity	9	11	2	22
Hooks	3	4	2	9
Non-screw/hook group
Patients	8	2	0	10
Dislocated rib heads	8	4	0	12

ISSN: 1471-2474