case_images: PMC11723723_01
case_images: Pre-operative pelvis CT scan.
case_images: JOCR-15-103-g001.jpg
case_images: PMC11723723_01_JOCR-15-103-g001.jpg
case_images: F1
case_images: The CT scan revealed a metastasis from a known renal cancer (clear cell adenocarcinoma), which involved the inferior part of the ilium, the sacroiliac joint, and the sacrum in proximity with the neuroforamina (Fig. 1).
case_images: (a) One-week post-operative 3D reconstruction from pelvis CT. (b) One-week post-operative 3D reconstruction from pelvis CT.
case_images: JOCR-15-103-g002.jpg
case_images: PMC11723723_01_JOCR-15-103-g002.jpg
case_images: F2
case_images: The patient underwent a post-operative CT (Fig. 2) and was discharged after 14 days. In addition, one radiologist measured the two diameters of the bone defect on the post-operative CT (Fig. 2).
case_images: Cutting guide designed in the computer aided design software 3-Matic 17.0 (Materialise, Leuven, Belgium).
case_images: JOCR-15-103-g003.jpg
case_images: PMC11723723_01_JOCR-15-103-g003.jpg
case_images: F3
case_images: The cutting guide was designed in the computer-aided design software 3-Matic 17.0 (Materialise, Leuven, Belgium), and the first iteration of the guide design was evaluated by the leading surgeon and the in-house engineer (Fig. 3 and 4).
case_images: Cutting guide designed in the computer aided design software 3-Matic 17.0 (Materialise, Leuven, Belgium).
case_images: JOCR-15-103-g004.jpg
case_images: PMC11723723_01_JOCR-15-103-g004.jpg
case_images: F4
case_images: The cutting guide was designed in the computer-aided design software 3-Matic 17.0 (Materialise, Leuven, Belgium), and the first iteration of the guide design was evaluated by the leading surgeon and the in-house engineer (Fig. 3 and 4).
case_images: Final design iteration of the cutting guide, which is split into two pieces.
case_images: JOCR-15-103-g005.jpg
case_images: PMC11723723_01_JOCR-15-103-g005.jpg
case_images: F5
case_images: The cutting guide was lastly split into two pieces to enable partial removal while the k-wires for screw placement could remain (Fig. 5).
case_images: (a) Cutting guide in BioMed clear after printing. (b) Cutting guide in BioMed Clear after printing.
case_images: JOCR-15-103-g006.jpg
case_images: PMC11723723_01_JOCR-15-103-g006.jpg
case_images: F6
case_images: The final design iteration of the cutting guide design was approved by the leading surgeon. The digital model was then exported to an STL file and prepared for printing in preform and printed (Fig. 6) on a Form 3B 3D printer in the biocompatible material BioMed Clear (FormLabs, Somerville, Massachusetts, US).
case_images: Picture of the printed model (tumor in red) and the first iteration of the cutting guide.
case_images: JOCR-15-103-g007.jpg
case_images: PMC11723723_01_JOCR-15-103-g007.jpg
case_images: F7
case_images: These models were for surgery preparation and visualization during surgery (Fig. 7).
case_images: Reconstructed digital model after re-scanning with the two measured axes.
case_images: JOCR-15-103-g008.jpg
case_images: PMC11723723_01_JOCR-15-103-g008.jpg
case_images: F8
case_images: Two diameters (A and B) were defined within the guide (Fig. 8).