case_images: PMC6218754_01
case_images: Plain radiographs showing posterior elbow dislocation with displaced radial head.
case_images: CRIOR2018-9272075.001.jpg
case_images: PMC6218754_01_CRIOR2018-9272075.001.jpg
case_images: fig1
case_images: The X-rays showed the posterior elbow dislocation with displaced radial head fracture (Figure 1).
case_images: CT scan showing the coronoid tip fracture (yellow arrow) and irreparable radial head fracture with indented articular surface (blue arrow) and deformation of the fracture ends (white arrow).
case_images: CRIOR2018-9272075.002.jpg
case_images: PMC6218754_01_CRIOR2018-9272075.002.jpg
case_images: fig2
case_images: A tip fracture of the coronoid process (Reagan-Morrey type I) was noted (Figure 2).
case_images: Preoperative planning: (a) 3D registration of the affected side with the mirrored image of the contralateral side and (b) planned level of bone resection and extent of radial head reconstruction.
case_images: CRIOR2018-9272075.003.jpg
case_images: PMC6218754_01_CRIOR2018-9272075.003.jpg
case_images: fig3
case_images: Subsequently, 3D image of the affected side was aligned with the mirrored 3D image of the contralateral bone by registration of the radial tuberosity and diaphysis to identify the correct anatomic profile of the reconstructed part (Figure 3(a)). With this technique, accurate preoperative planning for the position of additional bone resection and extent of radial neck restoration can be established (Figure 3(b)).
case_images: Photographs of titanium prosthesis with impressed mark (yellow arrowhead) to guide the rotation alignment.
case_images: CRIOR2018-9272075.004.jpg
case_images: PMC6218754_01_CRIOR2018-9272075.004.jpg
case_images: fig4
case_images: Note that the impressed mark in line with the radial tuberosity was specifically designed on the surface of the prosthesis to guide for the rotation alignment (Figure 4).
case_images: Photographs of 3D resin models of the proximal radius representing the cutting line and location of the impressed (blue arrow) for intraoperative guidance.
case_images: CRIOR2018-9272075.005.jpg
case_images: PMC6218754_01_CRIOR2018-9272075.005.jpg
case_images: fig5
case_images: The 3D resin models of the proximal radius representing the cutting line were also fabricated using the 3D printing technique for intraoperative guidance (Figure 5).
case_images: Intraoperative photograph showing the congruity of the titanium prosthesis with the sigmoid notch.
case_images: CRIOR2018-9272075.006.jpg
case_images: PMC6218754_01_CRIOR2018-9272075.006.jpg
case_images: fig6
case_images: The radial head prosthesis was introduced into the canal with the impressed mark aligned with radial tuberosity until the prosthetic neck fully seated on the cutting cortex (Figure 6).
case_images: Postoperative range of motion at 24 months after the surgery.
case_images: CRIOR2018-9272075.007.jpg
case_images: PMC6218754_01_CRIOR2018-9272075.007.jpg
case_images: fig7
case_images: At the latest follow-up, 24 months after surgery, the elbow extension was 28 , flexion was 145 , pronation was 80 , and supination was 90  (Figure 7).
case_images: Postoperative plain radiographs at the last follow-up.
case_images: CRIOR2018-9272075.008.jpg
case_images: PMC6218754_01_CRIOR2018-9272075.008.jpg
case_images: fig8
case_images: The proximal bone resorption at the radial neck and capitellar osteopenia were observed (Figure 8).