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Table 3 Comparison of cage strain (Mean ± S.D. μE) for all constructs

From: Biomechanical effects of polyaxial pedicle screw fixation on the lumbosacral segments with an anterior interbody cage support

Testing Contour Monoaxial screws Polyaxial screws
Compression 16.9 ± 8.20 † 120 ± 13†
  69.8 ± 19.4 * 129 ± 8*
  14° 141 ± 13 137 ± 14
  21° 32 ± 7.3‡ 126 ± 9‡
Flexion 6.30 ± 0.32 † 46.3 ± 4.67†
  32.1 ± 2.44 * 44.1 ± 1.85*
  14° 68.4 ± 4.42 # 45.4 ± 5.65#
  21° 27.3 ± 14.7 ‡ 50.8 ± 5.32‡
Lateral Bending 5.71 ± 0.08 † 58.3 ± 3.50†
  32.1 ± 2.00 * 55.4 ± 3.76*
  14° 50.5 ± 6.48 53.0 ± 6.05
  21° 7.18 ± 1.81‡ 59.7 ± 2.73‡
  1. † Significant difference between monoaxial screws group and polyaxial screws group (p < 0.05).
  2. * Significant difference between monoaxial screws group and polyaxial screws group (p < 0.05).
  3. # Significant difference between monoaxial screws group and polyaxial screws group (p < 0.05).
  4. ‡ Significant difference between monoaxial screws group and polyaxial screws group (p < 0.05).