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Knee. 2018 Aug;25(4):728-731. doi: 10.1016/j.knee.2018.04.013.

Metallosis in cemented titanium alloy total knee arthroplasty without apparent metal-on-metal articulation.

Author information

1
Massachusetts General Hospital Department of Orthopaedic Surgery, United States.
2
Massachusetts General Hospital Department of Pathology, United States.
3
Massachusetts General Hospital Department of Orthopaedic Surgery, United States. Electronic address: ymkwon@mgh.harvard.edu.

Abstract

BACKGROUND:

Metallosis is an uncommon phenomenon observed in late failures of cemented total knee arthroplasty (TKA), and it is rarely seen in the absence of metal-on-metal articulation.

METHODS:

We report the case of a TKA patient with cemented titanium-alloy components and a polyethylene patella that was revised for early loosening with intra-operative severe metallosis.

RESULTS:

We found that loosening and severe metallosis were associated with methacrylate particle abrasion on titanium alloy surfaces.

CONCLUSION:

Serum titanium ion level measurement may be helpful in the workup of a painful TKA with titanium-alloy components in order to establish a diagnosis.

KEYWORDS:

Metallosis; Titanium; Total knee arthroplasty

PMID:
29776814
DOI:
10.1016/j.knee.2018.04.013
[Indexed for MEDLINE]

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