case_images: PMC5874973_01
case_images: Left metal-on-metal THA with a pseudocyst.
case_images: CRIOR2018-6413814.001.jpg
case_images: PMC5874973_01_CRIOR2018-6413814.001.jpg
case_images: fig1
case_images: Following the onset of severe pain in the left hip, imaging (X-rays, ultrasound, and CT) revealed a calcified pseudocyst (Figure 1), a frequent complication of metal-on-metal prostheses.
case_images: Change in serum chromium and cobalt levels over time.
case_images: CRIOR2018-6413814.002.jpg
case_images: PMC5874973_01_CRIOR2018-6413814.002.jpg
case_images: fig2
case_images: The serum chromium and cobalt levels had risen to 71 nmol/L and 145 nmol/L, respectively (Figure 2), and appeared to be correlated with the patient's pain levels, although the precise cause of the pain remained unclear.
case_images: Endosteal osteolysis around the stem.
case_images: CRIOR2018-6413814.003.jpg
case_images: PMC5874973_01_CRIOR2018-6413814.003.jpg
case_images: fig3
case_images: A hip X-ray showed marked endosteal osteolysis around the stem (Figure 3).
case_images: Postoperative X-ray.
case_images: CRIOR2018-6413814.004.jpg
case_images: PMC5874973_01_CRIOR2018-6413814.004.jpg
case_images: fig4
case_images: We decided to replace the prosthesis and proceeded to implant a cementless stem and a dual mobility cup (Figure 4).