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Table 6 Frequency of ASD according to Oner, Rijt, and Ramos classification in patient with multilevel spine fixation

From: Early developed ASD (adjacent segmental disease) in patients after surgical treatment of the spine due to cancer metastases

  4-level 5-level 6-level 7-level 8-level 9-level
Oner, Rijt, and Ramos
 Type 1 10 19 50 56 18 19
 Type 2 1   1 3 1 1
 Type 3    1 1 2 1
 Type 4      1  
 Type 5      1 1
 Type 6 1 2   2 1 1