Table 3 RoM comparison of six models under six different working conditions
RoM of C3–4 (°) | ||||||
|---|---|---|---|---|---|---|
Working condition | NLCS | NLCS + C4–6 ACDF | LCSHD | LCSHD + C4–6 ACDF | LCSHD + C4–6 ACDF + C4–6 PWA 6° | LCSHD + C4–6 ACDF + C4–6 PWA 10° |
Forward flexion | 3.94 | 11.10 | 9.81 | 16.85 | 17.92 | 19.02 |
Backward extension | 3.67 | 6.31 | 5.88 | 7.71 | 8.49 | 9.56 |
Left bending | 9.22 | 14.55 | 15.22 | 17.77 | 19.48 | 20.32 |
Right bending | 9.48 | 14.67 | 16.56 | 18.97 | 20.65 | 22.47 |
Left rotation | 5.29 | 10.10 | 10.39 | 13.12 | 17.17 | 17.56 |
Right rotation | 5.34 | 10.53 | 12.10 | 15.86 | 17.75 | 18.06 |
RoM of C4–5 (°) | RoM of C5–6 (°) | |||||
|---|---|---|---|---|---|---|
Working condition | NLCS | NLCS + C5–7 ACDF | LCSHD | LCSHD + C5–7 ACDF | NLCS° | LCSHD |
Forward flexion | 5.64 | 7.04 | 6.16 | 8.38 | 5.63 | 5.83 |
Backward extension | 4.12 | 4.53 | 4.30 | 5.35 | 3.36 | 3.41 |
Left bending | 9.31 | 10.34 | 9.73 | 11.35 | 6.85 | 7.30 |
Right bending | 9.54 | 10.44 | 9.82 | 11.48 | 7.26 | 7.82 |
Left rotation | 6.51 | 7.46 | 6.76 | 8.47 | 5.10 | 5.59 |
Right rotation | 6.43 | 7.41 | 6.77 | 8.33 | 5.00 | 5.31 |
RoM of C6–7 (°) | ||||||
|---|---|---|---|---|---|---|
Working condition | NLCS | NLCS + C4–6 ACDF | LCSHD | LCSHD + C4–6 ACDF | LCSHD + C4–6 ACDF + C4–6 PWA 6° | LCSHD + C4–6 ACDF + C4–6 PWA 10° |
Forward flexion | 3.17 | 5.41 | 3.43 | 5.70 | 6.52 | 7.02 |
Backward extension | 3.18 | 3.72 | 3.66 | 3.97 | 4.56 | 4.63 |
Left bending | 4.72 | 6.68 | 5.51 | 6.91 | 7.14 | 8.32 |
Right bending | 4.74 | 6.66 | 5.31 | 6.84 | 7.23 | 8.47 |
Left rotation | 2.70 | 3.96 | 3.06 | 4.50 | 5.07 | 6.56 |
Right rotation | 2.70 | 4.23 | 2.87 | 4.75 | 4.80 | 6.06 |