Table 4.

von Mises distribution on the surface of the weight-bearing areas of the femoral head three-dimensional finite element models (MPa)

Treatment	Osteonecrosis range
	60°	90°	120°
Simple core decompression	4.21	4.62	5.32
Silk protein rod implantation	2.68	2.72	2.93
Fibula implantation	2.67	2.62	2.82
Tantalum rod implantation	2.43	2.59	2.89