case_images: PMC9905948_01
case_images: Preoperative anteroposterior plain radiography of both knee joints suggesting features of arthritis.
case_images: cureus-0015-00000033523-i11.jpg
case_images: PMC9905948_01_cureus-0015-00000033523-i11.jpg
case_images: FIG11
case_images: Plain radiography revealed grade IV arthritis with a varus-aligned knee (Figures 11, 12).
case_images: Preoperative lateral view plain radiography of both knee joints suggesting features of arthritis.
case_images: cureus-0015-00000033523-i12.jpg
case_images: PMC9905948_01_cureus-0015-00000033523-i12.jpg
case_images: FIG12
case_images: Plain radiography revealed grade IV arthritis with a varus-aligned knee (Figures 11, 12).
case_images: Pigmented patellar articular cartilage.
case_images: cureus-0015-00000033523-i13.jpg
case_images: PMC9905948_01_cureus-0015-00000033523-i13.jpg
case_images: FIG13
case_images: Intraoperatively, we found darkened articular cartilages, menisci, and softened bone (Figure 13).
case_images: Postoperative radiograph of the right knee joint with good alignment and implant position.
case_images: cureus-0015-00000033523-i14.jpg
case_images: PMC9905948_01_cureus-0015-00000033523-i14.jpg
case_images: FIG14
case_images: A postoperative radiograph showed a well-aligned knee (Figures 14, 15).
case_images: Postoperative radiograph of the left knee with good alignment and implant position.
case_images: cureus-0015-00000033523-i15.jpg
case_images: PMC9905948_01_cureus-0015-00000033523-i15.jpg
case_images: FIG15
case_images: A postoperative radiograph showed a well-aligned knee (Figures 14, 15).