Posttraumatic Proximal Radioulnar Synostosis after Closed Reduction for a Radial Neck and Olecranon Fracture

Figure 3

Left elbow radiographs three (a), four (b), and eleven (c) weeks after injury. Cast was removed at three weeks. Three-week AP and lateral radiographs (a) demonstrate a radial neck fracture with mild medial displacement and no change in alignment from prior (solid arrows in (a)) and a now-displaced olecranon fracture (hatched arrow in (a)). Four-week AP and lateral radiographs (b) demonstrate increased periosteal reaction about the radial neck fracture (solid arrows in (b)) with no change in alignment from prior and a healing olecranon fracture (hatched line in (b)). Eleven-week AP and lateral radiographs (c) demonstrate increased callus formation and synostosis about the medial aspect of the radial neck fracture (solid arrows in (c)) and a healed olecranon fracture (hatched arrow in (c)).

(a)

(b)

(c)