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Table 4 The average von Mises stress and stiffness of patient-specific models

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
Patient 1
 Preoperation 2.60 1.97 10.85 6.62 555.94
 Post-LBT 2.54 (− 2.48%) 1.70 (− 13.62%) 9.36 (− 13.76%) 5.84 (− 11.82%) 672.55 (+ 20.98%)
Patient 2
 Preoperation 2.17 2.09 11.91 7.67 433.43
 Post-LBT 2.04 (− 6.00%) 1.57 (− 24.90%) 9.6 (− 19.40%) 6.16 (− 19.69%) 555.8 (+ 28.23%)
  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