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Table 1 The material properties of the current finite element models

From: Biomechanical role of osteoporosis affects the incidence of adjacent segment disease after percutaneous transforaminal endoscopic discectomy

Components Young’s modulus (osteoporosis) Poisson’s ratio Cross-sectional area (mm2)
Cortical 12000 (8070) 0.3 /
Cancellous 100 (34) 0.2 /
Posterior elements 3500 (2345) 0.25 /
Endplate 1000 (670) 0.4 /
Cartilage 10 0.4 /
Capsular 26 0.3 67.5
ALL 20 0.3 60
PLL 70 0.3 21
LF 50 0.3 60
ITL 50 0.3 10
ISL 28 0.3 40
SSL 28 0.3 30
  1. Material properties of the osteoporosis model are shown in brackets
  2. ALL anterior longitudinal ligament, PLL posterior longitudinal ligament, LF ligamentum flavum, ISL interspinous ligament, SSL supraspinal ligament, ITL intertransverse ligament