Comparison of Ordinary Cannulated Compression Screw and Double-Head Cannulated Compression Screw Fixation in Vertical Femoral Neck Fractures

Figure 5

Typical radiographs with nonunion of vertical femoral neck fractures. (a–d) Radiographs of injury, postoperation, and 9 months after operation in the OCCS group with screw with nonunion. (e–h) Radiographs of injury, postoperation, and 9 months after operation in the DhCCS group with nonunion.

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