Table 2. Function and neck pain following multi-level C-ADR and multilevel ACDF.*.
| NDI Mean score (% change from preop) | VAS neck painMean score (% change from preop) | |||||
|---|---|---|---|---|---|---|
| C-ADR | ACDF | P | C-ADR | ACDF | P | |
| Preop | ||||||
| Cheng et al 1 (2009) | 50 | 51 | NS | 7.3 | 7.1 | NS |
| Kim et al 2(2009) | 26.4 | 26.2 | NS | 8.8 | 8.1 | NR |
| 1 year | ||||||
| Cheng et al 1 (2009) | 12 (76.0) | 18 (64.7) | .03 | 1.9 (74.0) | 2.5 (64.8) | NR |
| 2 years | ||||||
| Cheng et al 1 (2009) | 11 (78.0) | 19 (62.7) | .02 | 1.5 (79.5) | 2.6 (63.4) | .01 |
| Kim et al 2 (2009) | 7.8 (70.5) | 8.0 (69.5) | NS | 3.3 (62.5) | 3.4 (58.0) | NS |
*
C-ADR indicates cervical artificial disc replacement; ACDF, anterior cervical discectomy and fusion; NDI, Neck Disability Index; VAS, Visual Analog Scale; preop, preoperative; NR, not reported; and NS, not statistically significant.