case_images: PMC2821390_01
case_images: Sagittal radiograph of the knee showing dislocated patellar prosthesis.
case_images: 1752-1947-4-11-1.jpg
case_images: PMC2821390_01_1752-1947-4-11-1.jpg
case_images: F1
case_images: Radiographs taken in casualty showed that the prosthesis was dislodged and had displaced into the infrapatellar area (Figure 1).
case_images: Intraoperative picture showing dislocated patellar prosthesis in the patellar tendon.
case_images: 1752-1947-4-11-2.jpg
case_images: PMC2821390_01_1752-1947-4-11-2.jpg
case_images: F2
case_images: Intraoperatively, the prosthesis was noted to have sheared off its fixation pegs and dislocated inferiorly, thus splitting the patellar tendon and forming a pocket in it (Figures 2, 3, 4).
case_images: Extracted patellar prosthesis with cavity in the patellar tendon.
case_images: 1752-1947-4-11-3.jpg
case_images: PMC2821390_01_1752-1947-4-11-3.jpg
case_images: F3
case_images: Intraoperatively, the prosthesis was noted to have sheared off its fixation pegs and dislocated inferiorly, thus splitting the patellar tendon and forming a pocket in it (Figures 2, 3, 4).
case_images: Splitting of the patellar tendon due to dislocated patellar prosthesis.
case_images: 1752-1947-4-11-4.jpg
case_images: PMC2821390_01_1752-1947-4-11-4.jpg
case_images: F4
case_images: Intraoperatively, the prosthesis was noted to have sheared off its fixation pegs and dislocated inferiorly, thus splitting the patellar tendon and forming a pocket in it (Figures 2, 3, 4).
case_images: Postoperative sagittal radiograph of the knee after revision of the patellar component.
case_images: 1752-1947-4-11-5.jpg
case_images: PMC2821390_01_1752-1947-4-11-5.jpg
case_images: F5
case_images: The patella was cleaned and the patellar cut was revised to 16 mm and the cemented 38-mm prosthetis was reimplanted with a good patellofemoral tracking (Figure 5).