Revision rate of large head diameter metal-on-metal total hip arthroplasty: long-term results
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By
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March 14, 2026
Objective:
To investigate the long-term clinical outcomes and revision rates of patients who underwent total hip arthroplasty (THA) with a specific metal-on-metal (MoM) acetabular prosthesis, with a minimum follow-up of 10 years.
Key Findings:
- A 29% incidence of adverse reactions to metal debris (ARMD) was observed, with some patients requiring revision surgery due to complications.
- Pseudotumors were identified in a significant proportion of patients, indicating a need for careful monitoring.
- High short-term failure rates were noted due to complications associated with MoM bearings.
Interpretation:
The study highlights the long-term complications associated with MoM THA, including a notable incidence of ARMD and pseudotumors, which can lead to increased revision rates and necessitate ongoing patient management.
Limitations:
- The study had a relatively small sample size and potential loss to follow-up, which may introduce bias.
- The findings may not be generalizable to all MoM THA patients due to specific implant types used.
Conclusion:
Long-term outcomes of MoM THA indicate significant risks of ARMD and pseudotumors, emphasizing the need for careful monitoring and management of patients with these implants.
