Patient-Specific Instruments for Forearm Sarcoma Resection and Allograft Reconstruction in Children: Results in 4 Cases

Figure 2

The same patient mentioned in Figure 1. Top left and right: the segmented tumor on MRI was merged with the CT scan. The tumor is in red (there were 3 small separated tumoral areas in the proximal ulna). The picture gives the detail of the preoperative planning for the proximal section. A step cut was chosen to improve stability. The chosen margin was 5 mm in order to preserve the joint. Bottom: the green zone in the ulna is the area that is planned to be resectioned. Left: medial view and right: lateral view.