Table 2 Level distributions
Level | No. of level |
|---|---|
Arthroplasty (Total level = 21) |  |
 C3/4 | 5 (23.8 %) |
 C4/5 | 4 (19.0 %) |
 C5/6 | 10 (47.6 %) |
 C6/7 | 2 (9.5 %) |
ACDF (Total level = 25) |  |
 C3/4 | 4 (16.0 %) |
 C4/5 | 10 (40.0 %) |
 C5/6 | 8 (32.0 %) |
 C6/7 | 3 (12.0 %) |