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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).