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Table 1 Basic characteristics of the FSUs

From: The effect of repetitive flexion and extension fatigue loading on the young porcine lumbar spine, a feasibility study of MRI and histological analyses

FSU Load Angle Level Distance from B-line
1 Flexion 10 L4–L5 10
2 Flexion 12 L2–L3 11
3 Flexion 12 L4–L5 12
4 Flexion 10 L2–L3 12
5 Flexion 10 L4–L5 13
6 Flexion 13 L2–L3 12
7 Flexion 15 L4–L5 12
8 Flexion 15 L2–L3 14
9 Extension 9 Th12–L1 10
10 Extension 10 L2–L3 10
11 Extension 10 L4–L5 10
12 Extension 9 Th12–L1 10
13 Extension 9 L2–L3 10
14 Extension 8 Th12–L1 10
15 Extension 9 Th12–L1 10
16 Extension 10 L4–L5 10
  1. Angle in degrees. FSU Functional spinal unit. Distance in mm. B-line as in Fig. 2