Fig. 2From: Biomechanical comparison of the femoral neck system versus InterTan nail and three cannulated screws for unstable Pauwels type III femoral neck fractureDeformation of holes in the distal-to-proximal direction. A FNS hole, B InterTan nail hole; C cannulated screw holes. No significant deformation of the InterTan nail hole was seen, indicating that InterTan nail had highest stability. Slight extrusion was visible at the distal and proximal direction of the FNS holes. All three cannulated screw holes showed deformation to varying degrees, with the most pronounced deformation below the calcar femoraleBack to article page