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Table 2 Variables categorized as different grades

From: The risk factors for type ii respiratory failure in patients with severe scoliosis (less than 40-year old)

 

Grade 1

Grade 2

Grade 4

Grade 5

Age of onset

≤ 5 years

> 5 years

  

Apical vertebrae

Above T5

T6-T10

T11-T12

 

Main curve

< 120

120–150

> 150

 

Kyphosis

< 90

90–120

121–150

> 150

T1-T12 distance (mm)

< 100

100–140

141–180

> 180

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X