Fig. 2From: Mechanical study of the application of compression screw nails in the cross-inverted triangular pattern for internal fixation of femoral neck fracturesDiagram of inverted triangle and cross-inverted triangle implantation nails a: Inverted triangle implanted nails; b ~ c: Front view and top view of cross-inverted triangle implanted nails. The solid line is the inverted triangle, and the dashed line is the cross-inverted triangle. d: Cross-inverted triangle implanted nailsBack to article page