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

Figure 4

Typical radiographs with fixation failures of vertical femoral neck fractures. (a–c) Radiographs of injury, postoperation, and 6 months after operation in the OCCS group with screw loosening and FNS. (d–f) Radiographs of injury, postoperation, and 6 months after operation in the DhCCS group with screw loosening, varus deformity and FNS.

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