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Table 1 Assessment of postural sway of processus spinosus by way of standard deviations calculated from group of 70 subjects

From: Optimization of the examination posture in spinal curvature assessment

  

x coordinate

y coordinate

z coordinate

Processus spinosus

Posture

Comp.

Posture

Comp.

Posture

Comp.

  

A

G

G – A

A

G

G – A

A

G

G – A

  

MSD

MSD

Δ

MSD

MSD

Δ

MSD

MSD

Δ

C3

[mm]

3.5

1.1

−2.4*

5.7

1.1

−4.6*

1.1

0.8

−0.3*

C4

[mm]

3.5

0.9

−2.5*

5.3

1.1

−4.2*

1.1

0.8

−0.3*

C5

[mm]

3.5

0.8

−2.7*

5.1

1.0

−4.1*

0.9

0.6

−0.3*

C6

[mm]

3.6

0.8

−2.8*

4.8

0.9

−3.9*

0.9

0.6

−0.3*

C7

[mm]

3.7

0.7

−3.0*

5.0

0.9

−4.1*

0.8

0.6

−0.2*

T1

[mm]

3.8

0.8

−3.0*

4.9

0.9

−4.0*

0.9

0.6

−0.3*

T2

[mm]

3.6

0.7

−2.9*

4.8

0.8

−4.0*

1.0

0.6

−0.4*

T3

[mm]

3.6

0.8

−2.8*

4.7

1.0

−3.7*

1.1

0.7

−0.4*

T4

[mm]

3.7

0.7

−3.0*

4.7

1.0

−3.7*

1.1

0.7

−0.4*

T5

[mm]

3.7

0.7

−3.0*

4.5

1.0

−3.5*

1.2

0.8

−0.4*

T6

[mm]

3.6

0.8

−2.8*

4.5

1.2

−3.3*

1.2

0.8

−0.4*

T7

[mm]

3.6

0.7

−2.9*

4.6

1.2

−3.4*

1.3

0.8

−0.5*

T8

[mm]

3.3

0.7

−2.6*

4.4

1.3

−3.1*

1.3

0.9

−0.4*

T9

[mm]

3.3

0.7

−2.6*

4.4

1.3

−3.0*

1.2

0.9

−0.3*

T10

[mm]

3.3

0.7

−2.6*

4.6

1.3

−3.3*

1.3

1.0

−0.3*

T11

[mm]

3.2

0.8

−2.4*

4.6

1.3

−3.3*

1.3

0.9

−0.4*

T12

[mm]

3.1

0.8

−2.3*

4.4

1.3

−3.1*

1.2

1.0

−0.2*

L1

[mm]

3.1

0.7

−2.4*

4.3

1.3

−3.0*

1.1

1.0

−0.1

L2

[mm]

2.8

0.7

−2.1*

4.4

1.3

−3.1*

1.2

1.0

−0.2

L3

[mm]

2.8

0.7

−2.1*

4.2

1.3

−2.9*

1.2

1.0

−0.2

L4

[mm]

2.8

0.7

−2.1*

4.0

1.3

−2.7*

1.1

1.0

−0.1

L5

[mm]

2.7

0.7

−2.0*

4.0

1.2

−2.8*

1.1

0.9

−0.2*

Average

3.4

0.8

−2.6

4.6

1.1

−3.5

1.1

0.8

−0.3

  1. x – mediolateral direction.
  2. y – posterioanterior direction.
  3. z – vertical.
  4. Posture A – free standing position.
  5. Posture G – standing position supported by a fixation frame.
  6. MSD – mean of standard deviations.
  7. Δ – difference of parameters.
  8. * – statistically significant (p < 0.05, paired t-test).