Progressive Loosening in Metal-on-Metal Total Hip Arthroplasty after Fifteen Years of Effective Function: Two Case Reports

Metallosis poses a significant risk in MoM THA, caused by wear and corrosion, leading to systemic and local tissue damage. Timely diagnosis through clinical evaluation, imaging, and serum metal ion levels is critical for intervention. Revision surgeries are effective in managing metallosis and restoring function. These cases highlight the importance of long-term monitoring and the consideration of alternative bearing surfaces in hip arthroplasty.