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Table 6 COR mean values pre- and post-op after implantation of a Prestige prosthesis compared with COR in healthy volunteers (COR-HV)

From: In cervical arthroplasty, only prosthesis with flexible biomechanical properties should be used for achieving a near-physiological motion pattern

Segment

COR-HV

COR pre-op

COR post-op

x

y

x

y

x

y

C6/7

Mean

4.9

− 1.1

7.7

− 6.9

7.7

− 2.9

SD

3.2

2.6

6.3

10.7

9.3

18.7

p

  

0.163

0.054

0.289

0.718

C5/6

Mean

4.8

− 4.0

7.6

− 5.2

6.4

− 3.3

SD

2.8

3.1

4.8

4.7

3.5

5.4

p

  

0.072

0.479

0.216

0.660

C4/5

Mean

4.8

− 3.8

7.2

− 4.7

5.6

− 7.7

SD

2.3

3.7

3.5

2.3

3.3

2.7

p

  

0.052

0.078

0.511

0.014

C3/4

Mean

4.8

− 5.8

7.6

− 4.5

5.0

− 9.4

SD

2.3

5.6

3.4

2.9

4.6

3.3

p

  

0.022

0.153

0.881

0.090