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   | [ Rotating Spine ] 
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±æÀÌ:skull Base¿¡¼ Neck°ú TrunkÀÇ Àü ±æÀ̱îÁö extend
±¸¼º:´Ù¼öÀÇ Vert.°¡ Lig.¿Í intervertebral disc¿¡ ÀÇÇØ ¿¬°á
¼ö:Child-33, Adult-26(Sacrum 5->1, Coccyx 4->1)
°¢°¢ÀÇ ¼öCervical vert.-7, Thoracic vert.-12, Lumbar vert.-5
 
ÃѼöChild 7+12+5+5+4=33 Adult 7+12+5+1+1=26
 
À¯¿¬:Flexible curved for support trunk 
        
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