Table 1.
Linearity coefficients of normal and shear strain vs. percent motion completion at five regions of the disc.
Disc | Normal strain | Shear strain | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Anterior | Posterior | Left | Right | Center | Anterior | Posterior | Left | Right | Center | |
L2L3 | 0.92 | 0.97 | 0.43 | 0.54 | 0.44 | 0.84 | 0.86 | 0.83 | 0.86 | 0.86 |
L3L4 | 0.94 | 0.97 | 0.49 | 0.52 | 0.51 | 0.83 | 0.87 | 0.80 | 0.88 | 0.87 |
L4L5 | 0.97 | 0.99 | 0.78 | 0.38 | 0.69 | 0.81 | 0.84 | 0.88 | 0.79 | 0.85 |
L5S1 | 0.88 | 0.92 | 0.65 | 0.46 | 0.62 | 0.44 | 0.50 | 0.43 | 0.36 | 0.47 |
The linear R-squared coefficients were computed for each participant, segment, and disc region, and then were averaged across all participants.