Skip to main content

Table 2 Biomechanical values (median, (Q1, Q3)) in flexion and extension in all groups

From: Biomechanical evaluation of combined short segment fixation and augmentation of incomplete osteoporotic burst fractures

Flexion NZ   EZ   sNZ   sEZ  
  [°]   [°]   [°]   [°]  
1) Intact specimen 4.5 (2.1, 4.8) 100% 6.4 (2.7, 7.3) 100% 0.32 (0.20, 0.63) 100% 1.17 (0.89, 1.67) 100%
2) Fractured 7.0 (4.3, 7.9) 157% 7.4 (5.5, 10.4) 116% 0.14 (0.12, 0.15) 44% 1.01 (0.84, 1.15) 86%
3) Biseg. instrument. 2.7 (2.2, 3.4) 61% 5.6 (4.1, 6.7) 88% 0.53 (0.34, 0.60) 165% 0.93 (0.90, 1.13) 80%
4) HA 2.3 (1.6, 4.7) 53% 5.2 (3.4, 5.5) 82% 0.60 (0.32, 0.64) 187% 1.18 (1.08, 1.48) 101%
5) VP 5.2 (4.3, 7.2) 116% 7.0 (4.6, 8.0) 111% 0.16 (0.14, 0.28) 51% 1.10 (0.99, 1.44) 94%
Extension NZ   EZ   sNZ   sEZ  
  [°]   [°]   [°]   [°]  
1) Intact specimen 4.5 (2.1, 4.8) 100% 7.6 (2.5, 9.7) 100% 0.29 (0.22, 0.62) 100% 0.89 (0.79, 2.04) 100%
2) Fractured 7.0 (4.3, 7.9) 157% 8.9 (5.2, 9.0) 117% 0.15 (0.12, 0.19) 54% 0.95 (0.84, 1.06) 107%
3) Biseg. instrument. 2.7 (2.2, 3.4) 61% 5.3 (4.5, 6.5) 70% 0.44 (0.30, 0.62) 153% 1.12 (0.94, 1.23) 126%
4) HA 2.3 (1.6, 4.7) 53% 4.8 (3.4, 7.4) 63% 0.49 (0.34, 0.57) 170% 1.23 (1.06, 1.44) 138%
5) VP 5.2 (4.3, 7.2) 116% 9.2 (6.6, 9.9) 121% 0.16 (0.14, 0.19) 55% 0.91 (0.88, 1.10) 102%
  1. In addition, all data are also presented normalized by the intact performance (as a percentage of prefractured values).