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Table 9 Statistical analysis of the incidence of ASD according to stabilization extension

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

Pfirmann and Metzdorf

Levels 4–6

Levels 7–9

P value

Grades 1 and 2

74

97

<0.05

Grades 3, 4, and 5

11

19

<0.05

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X