Ordinary Cannulated Compression Screws or Headless Cannulated Compression Screws? A Synthetic Bone Biomechanical Research in the Internal Fixation of Vertical Femoral Neck Fracture

Figure 3

The preparation of the models. (a, b) The guiding plates were used to obtain the accurate angle of fracture line and ideal placement of screws. (c) Two magnets were placed on the proximal and distal fragments, respectively, to record the displacement of the two fragments.

(a)

(b)

(c)