Table 3 Different types of radiologically detected (MRI) adjacent segment degenerative changes classified according to the Pfirmann and Metzdorf scale in relation to surgical options in the treatment of 194 follow-up patients
Group | Group A | Group B | Group C | Group D | Group E | Group F | Group G |
|---|---|---|---|---|---|---|---|
Number of patients N(%) | 31(16) | 87(45) | 6(3) | 12(6) | 9(5) | 31(16) | 18(9) |
Grade 1 | 25 | 67 | 5 | 6 | 7 | 24 | 14 |
Grade 2 | 2 | 6 | – | 1 | 1 | 3 | 2 |
Grade 3 | 1 | 4 | 1 | 2 | – | 1 | 1 |
Grade 4 | 1 | 3 | – | 1 | – | 1 | 1 |
Grade 5 | 1 | 4 | – | – | 1 | 1 | – |
Others | 1 | 3 | – | 2 | – | 1 | – |