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Table 3 The average von Mises stress and stiffness in each region and reduced percentage in CTT and LBT

From: Biomechanical analysis of fibular graft techniques for nontraumatic osteonecrosis of the femoral head: a finite element analysis

 

Stress (Mpa)

Stiffness (N/mm)

WB

CFH

FN

TS

JIC C1

 Preoperation

3.63

2.3

4.85

2.36

3068.48

 Post-CTT

2.32 (− 36.19%)

1.93 (− 16.19%)

3.75 (− 22.76%)

2.04 (− 13.41%)

3356.89 (+ 9.40%)

 Post-LBT

2.49 (− 31.45%)

1.95 (− 14.91%)

4.43 (− 8.65%)

2.30 (− 2.51%)

3227.45 (+ 5.18%)

JIC C2

 Preoperation

3.39

2.35

5.16

2.32

3205.67

 Post-CTT

2.59 (− 23.63%)

1.80 (− 23.48%)

4.04 (− 21.78%)

2.02 (− 12.86%)

3454.55 (+ 7.76%)

 Post-LBT

2.49 (− 26.76%)

1.99 (− 15.24%)

4.11 (− 20.43%)

2.13 (− 8.14%)

3278.12 (+ 2.26%)

  1. WB weight-bearing area, CFH central femoral head, FH femoral neck, TS trochanteric and subtrochanteric region. The value in parentheses is the relative preoperative percentage