case_images: PMC10823804_01
case_images: Pre-operative photograph of the knee joint showing swelling and suprapatellar fullness.
case_images: JOCR-14-58-g001.jpg
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case_images: F1
case_images: Physical examination revealed a deformed right knee with anteroposterior (AP) enlargement and fullness in the suprapatellar pouch (Fig. 1).
case_images: Pre-operative active knee flexion up to 110 .
case_images: JOCR-14-58-g002.jpg
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case_images: F2
case_images: Range of motion included a passive hyperextension of 20  and active flexion up to 110  (Fig. 2).
case_images: Pre-operative anteroposterior and lateral radiographs.
case_images: JOCR-14-58-g003.jpg
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case_images: F3
case_images: On radiological examination, the right knee AP X-ray revealed a dislocated knee with secondary osteoarthritic changes (Fig. 3).
case_images: Knee joint reduced after giving posterior drawer force.
case_images: JOCR-14-58-g004.jpg
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case_images: F4
case_images: On giving a posterior drawer force, it is seen that the knee gets reduced proving the instability of the knee joint (Fig. 4).
case_images: Pre-operative scanogram.
case_images: JOCR-14-58-g005.jpg
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case_images: F5
case_images: Additional pre-operative scanogram is taken to measure the limb alignment (Fig. 5).
case_images: Loss of articular cartilage with tibial bony defect posteriorly examined after joint arthrotomy.
case_images: JOCR-14-58-g006.jpg
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case_images: F6
case_images: Tibial posterior condyles had huge bony defects more in the posteromedial condyle (Fig. 6).
case_images: After taking standard femoral and tibial cuts with metaphyseal sleeve preparation for tibia. Posteromedial bony defect in tibia visualized.
case_images: JOCR-14-58-g007.jpg
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case_images: F7
case_images: The posteromedial tibial defect was reconstructed with bone grafts and cement (Fig. 7).
case_images: Post-final implantation of prosthesis components.
case_images: JOCR-14-58-g008.jpg
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case_images: F8
case_images: Sigma TC3 (Depuy Synthes, Warsaw, Indiana) cemented femoral component with distal augments and a 14 x 125 mm PFC  Sigma  fluted femoral stem, a DePuy MBT Revision Tibial Tray Rotating platform Cemented with 29-mm MBT Revision Cemented Metaphyseal Sleeve and 13 x 30 mm cemented modular stem. Stability was achieved using Sigma  Rotating platform TC3 Tibial Insert of size 17.5 mm (Fig. 8).
case_images: Post-operative radiographs - Lateral and anteroposterior views of right knee.
case_images: JOCR-14-58-g009.jpg
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case_images: F9
case_images: The post-operative radiograph revealed a well-aligned and well-fixed prosthesis (Fig. 9).
case_images: Clinical photographs at 3rd-month follow-up.
case_images: JOCR-14-58-g010.jpg
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case_images: F10
case_images: At the latest 3rd-month follow-up, the patient has a stable knee with a good range of motion of 0-110  (Fig. 10). 3rd-month radiographs show a well-fixed prosthesis (Fig. 11).
case_images: Radiographs at post-operative 3rd month.
case_images: JOCR-14-58-g011.jpg
case_images: PMC10823804_01_JOCR-14-58-g011.jpg
case_images: F11
case_images: At the latest 3rd-month follow-up, the patient has a stable knee with a good range of motion of 0-110  (Fig. 10). 3rd-month radiographs show a well-fixed prosthesis (Fig. 11).