8/28/2023 0 Comments Hip replacement metallosis![]() ![]() However, these components ultimately were found to have significantly higher revision rates up to three times those of contemporary hip implants with a resultant significant decline in their use. There are many potential advantages to MoM articulations, including their tolerance of high-impact loading, extremely low wear rates, and increased stability provided by the larger head size. This awareness initially developed following the introduction of large diameter metal-on-metal (MoM) THAs, and hip resurfacing devices with an MoM articulation. There has been increasing recognition of local and systemic adverse events associated with the release of metal ions and nanoparticles from arthroplasty components. Total hip arthroplasty (THA) is a very common procedure to treat hip osteoarthritis, with over one million patients undergoing the procedure every year. Given the potential for significant adverse effects of large masses, the authors’ preference is to involve a multidisciplinary team to achieve a more comprehensive excision while minimizing the risk of potential complications. There remains a lack of literature to support the extensiveness of pseudotumor excision required in complex cases with significant intrapelvic or vascular involvement. The second case is that of a 64-year-old Caucasian female with a pseudotumor in close relationship to the femoral vessels following a metal-on-metal hip resurfacing, excised with a combination of vascular surgery and orthopedic surgery, with subsequent revision total hip reconstruction. Pseudotumor excision was followed by a revision total hip reconstruction in addition to an abductor mechanism reconstruction with tendo-Achilles allograft. The first case involves a 60-year-old Caucasian female with a large pseudotumor with intrapelvic and vascular involvement associated with a metal-on-polyethylene total hip arthroplasty, excised with contributions from general surgery, vascular surgery, and orthopedic surgery. As reports of pseudotumors requiring multidisciplinary excision are limited, we present two pseudotumor cases that were excised through a combined approach. These masses can result in pain, swelling, extensive destruction to surrounding hip soft-tissues, and compression syndromes on neurovascular, gastrointestinal, and genitourinary structures. Adverse local tissue reactions to metal ion debris can include periprosthetic solid and cystic masses known as pseudotumors. There has been increasing recognition of local and systemic adverse events associated with the release of metal ions and nanoparticles from hip arthroplasty components. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |