PMC8650677_01
Plain X-ray images of an unhealed proximal pole fracture and a broken 2.5 headless screw.
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Plain X-ray and computed tomography (CT) images at the time of evaluation showed an unhealed proximal pole fracture and a broken headless screw (Figure 1).
Sequential follow-up images at Months 1 to 3.
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Relevant information was obtained based on the previous radiological images, which were performed in another center prior to primary surgery (Figure 2).
Headless screw that was broken came out with the help of a thin Kirschner wire attached to the reamer and turned in the opposite direction.
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The drill was, then, turned in the opposite direction and the screw was removed (Figure 3).
Postoperative images of a stable fixation with a 2.8-mm Acutrak  screw
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A more antegrade central fixation was carried out with a 2.8-mm headless screw (Acutrak ; Acumed LLC, OR, USA) after the bone grafting was completed (Figure 4). 
Plain radiographs showing new consolidated bone areas in nonunion zone at Month 3.
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At three months, there were radiographic signs of healing in the nonunion area without bone resorption (Figure 5).
Serial computed tomography images showing a bridging trabecula on axial and sagittal at Month 9.
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The bridging trabecula was found on CT scans in two planes at nine months (Figure 6).