case_images: PMC11823879_01
case_images: X-ray of the patient from the year 2015 showing severe aseptic loosening of the implant which was inserted in 2007.
case_images: JOCR-15-141-g001.jpg
case_images: PMC11823879_01_JOCR-15-141-g001.jpg
case_images: F1
case_images: Unfortunately, this intervention did not prevent further complications; by 2015, the revised implant exhibited severe aseptic loosening and proximal femoral bone loss (Fig. 1).
case_images: Post-operative X-ray from the year 2015 after removal of the total hip replacement implant and replacing it with mega prosthesis implant.
case_images: JOCR-15-141-g002.jpg
case_images: PMC11823879_01_JOCR-15-141-g002.jpg
case_images: F2
case_images: Given that the cemented acetabular cup remained well-fixed, only proximal femoral resection was performed, and a tumor mega-prosthesis was applied to restore hip joint stability (Fig. 2-4).
case_images: Intraoperative image from the year 2015 showing total hip replacement implant from last surgery that has been removed.
case_images: JOCR-15-141-g003.jpg
case_images: PMC11823879_01_JOCR-15-141-g003.jpg
case_images: F3
case_images: Given that the cemented acetabular cup remained well-fixed, only proximal femoral resection was performed, and a tumor mega-prosthesis was applied to restore hip joint stability (Fig. 2-4).
case_images: Intraoperative image from the year 2015 showing mega prosthesis insertion.
case_images: JOCR-15-141-g004.jpg
case_images: PMC11823879_01_JOCR-15-141-g004.jpg
case_images: F4
case_images: Given that the cemented acetabular cup remained well-fixed, only proximal femoral resection was performed, and a tumor mega-prosthesis was applied to restore hip joint stability (Fig. 2-4).
case_images: Pre-operative X-ray from the year 2022 showing loosening of the cemented acetabular cup leading to its dislocation from the socket along with dislocation of the femoral head.
case_images: JOCR-15-141-g005.jpg
case_images: PMC11823879_01_JOCR-15-141-g005.jpg
case_images: F5
case_images: This led to proximal migration of the dislocated cup and femoral head over the ilium bone (Fig. 5-7).
case_images: Pre-operative X-ray from the year 2022 showing loosening of the cemented acetabular cup leading to its dislocation from the socket along with dislocation of the femoral head.
case_images: JOCR-15-141-g006.jpg
case_images: PMC11823879_01_JOCR-15-141-g006.jpg
case_images: F6
case_images: This led to proximal migration of the dislocated cup and femoral head over the ilium bone (Fig. 5-7).
case_images: Pre-operative computed tomography scan from the year 2022 showing loosening of the cemented acetabular cup leading to its dislocation from the socket along with dislocation of the femoral head.
case_images: JOCR-15-141-g007.jpg
case_images: PMC11823879_01_JOCR-15-141-g007.jpg
case_images: F7
case_images: This led to proximal migration of the dislocated cup and femoral head over the ilium bone (Fig. 5-7).
case_images: PMC11823879_02
case_images: Final post-operative X-ray from the year 2022.
case_images: JOCR-15-141-g008.jpg
case_images: PMC11823879_02_JOCR-15-141-g008.jpg
case_images: F8
case_images: Intra-operatively, a posterior acetabular defect (Paprosky type IIIA) was noted, which was reconstructed using tri-cortical bone grafting and a reconstruction plate (Fig. 8).
case_images: Intraoperative image from the year 2022 showing a smaller extension piece being used in the mega prosthesis implant mimicking a femoral shortening osteotomy.
case_images: JOCR-15-141-g009.jpg
case_images: PMC11823879_02_JOCR-15-141-g009.jpg
case_images: F9
case_images: The extension piece of 70 mm was reduced to 20 mm, effectively performing a femoral shortening osteotomy (Fig. 9), which made the hip joint reducible.
case_images: Intraoperative image from the year 2022 showing bipolar head being used over the mega prosthesis implant.
case_images: JOCR-15-141-g010.jpg
case_images: PMC11823879_02_JOCR-15-141-g010.jpg
case_images: F10
case_images: A new prosthetic body was then implanted over the extension piece, and a bipolar head was fitted (Fig. 10), allowing for the hip to be reduced.