Marked Subchondral Bandlike Osteopenia on Radiography after Trauma and Inactivity: A Report of four Cases
Figure 4
Serial axial radiographs of the patella after screw refixation of an osteochondral flake fracture in a 17-year-old patient. Followup imaging after operation (b) shows osteopenia with a subchondral predelication, this is in clear contrast to the immediately postoperative radiograph (a).