Fig. 1From: A novel animal model of osteonecrosis of the femoral head based on 3D printing technologyA 4.5Â mm intraacetabular femoral compression nails, B 4.0Â mm intraacetabular femoral compression nails, C 3.5Â mm intraacetabular femoral compression nails, D 3.0Â mm intraacetabular femoral compression nails. E Implantation fixation system for femoral head compression deviceBack to article page