Elevated Titanium Levels After Revision Total Hip Caused by Previously Unreported Mechanism.

Introduction: Metallosis from total hip arthroplasty is usually due to trunnionosis and is associated with elevated serum cobalt and chromium levels. Titanium levels usually remain normal.

Methods: Here, we report two rare cases of elevated titanium levels, both with the same mechanism, which is a previously unreported cause of titanium metallosis.