Fig. 3

Radiographs of a 53-year-old female who sustained a FNF. A–D Anteroposterior (AP) X-ray radiographs and CT scan images of vertical displaced fracture, type Pauwels III and Garden IV; E AP radiograph following closed reduction and internal fixation with CBS; F–G AP radiograph and CT coronal reconstruction image revealing the nonunion with a distinctive fracture fixation loosening, medial screw migration beneath the femoral head subchondral bone in the direction of the acetabulum with slight fracture displacement; H The patient underwent a total hip arthroplasty due to the nonunion after 9 months following the primary internal fixation