Soft Tissue Problems after MoM Hip Replacements, Comparison of MRI and Ultrasound
Ultrasound and MRI are the primary imaging techniques used to detect pseudotumors and other soft tissue pathology in patients with metal-on-metal THAs. Soft tissue lesions can be difficult to detect because patients can have symptoms, such as pain and discomfort and elevated cobalt and chromium levels, or no symptoms at all. There have been several studies comparing the efficacy of the relatively low cost ultrasound, done with a variety of portable ultrasound machines and more high-end fixed devices, with the higher cost MRI but none have compared ultrasound to actual revision surgery findings. The authors of this article described the prevalence and type of pseudotumors detected with pre-revision ultrasound and compared it to revision surgery findings. They concluded that the presence of pseudotumors is well detected with ultrasound but there is a discrepancy with intraoperative findings at revision.
See Lainiala, O. et al. Good sensitivity and specificity of ultrasound for detecting pseudotumors in 83 failed metal-on-metal hip replacements, Acta Orthopaedica, 86, Epub, (2015)
Weisman, Kennedy and Berris is currently serving on the leadership of national litigation involving DePuy’s ASR and Stryker’s Rejuvenate and ABGII devices. The firm has extensive experience in handling lawsuits against orthopedic device manufacturers and has been extremely successful in obtaining just compensation for pain, suffering and lost wages of clients from across the country resulting from failed implants. If you or someone you know has experienced such a failure, attorneys at Weisman Kennedy and Berris would be happy to answer any questions you might have about available rights.