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Table 1 ROM; Mean-values for maximum flexion / extension of the respective motion-segments compared to previously reported data in the literature

From: Cervical disc prostheses need a variable center of rotation for flexion / extension below disc level, plus a separate COR for lateral bending above disc level to more closely replicate in-vivo motion: MRI-based biomechanical in-vivo study

Study

ROM o (SD)

C2/C3

C3/C4

C4/C5

C5/C6

C6/C7

Aho et al. [26]

12 (5)

15 (7)

22 (4)

28 (4)

15 (4)

Bhalla and Simmons [27]

9 (1)

15 (2)

23 (1)

19 (1)

18 (3)

White and Panjabi [25]

8

13

12

17

16

Lind et al. [4]

10 (4)

14 (6)

16 (6)

15 (8)

11 (7)

Dvorak et al. [2]

10 (3)

15 (3)

19 (4)

20 (4)

19 (4)

Our study

–

11.4 (3.4)

14.9 (4.8)

12.7 (3.4)

14.4 (5.8)