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Table 1 Absolute values of range of motion (ROM)

From: Effects of multilevel posterior ligament dissection after spinal instrumentation on adjacent segment biomechanics as a potential risk factor for proximal junctional kyphosis: a biomechanical study

Segment State Treatment group Control group
Mean (°) SD (°) Mean (°) SD (°)
L1–L2 intact_cycl 9.88 3.68 9.51 1.18
L4-L6_cycl 10.44 3.97 9.83 1.25
L3-L6_cycl 10.73 4.07 10.29 1.23
L2-L6_cycl 11.25 4.22 10.56 1.34
L2–L3 intact_cycl 10.47 2.56 11.27 1.65
L4-L6_cycl 10.97 2.74 11.64 1.69
L3-L6_cycl 11.24 2.83 12.02 1.74
L2-L6_cycl 12.50 3.47 12.25 1.70
L3–L4 intact_cycl 1.53 0.73 1.71 0.26
L4-L6_cycl 1.60 0.72 1.75 0.25
L3-L6_cycl 1.66 0.75 1.82 0.24
L2-L6_cycl 1.71 0.76 1.85 0.24
L4–L6 intact_cycl 2.58 0.81 3.16 0.84
L4-L6_cycl 2.81 0.87 3.30 0.85
L3-L6_cycl 2.87 0.89 3.43 0.83
L2-L6_cycl 2.84 0.80 3.47 0.80
  1. Absolute values of range of motion (ROM) in degrees during testing of segments L1–L2, L2–L3, L3–L4, and L4–L6 in the treatment and control groups