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Updated: Mar 11, 2026

Co-localizing Kelvin Probe Force Microscopy with Other Microscopies and Spectroscopies: Selected Applications in Corrosion Characterization of Alloys
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Oxidized zirconium on ceramic; Catastrophic coupling.

V E Ozden1, N Saglam2, G Dikmen1

  • 1Acibadem University, Faculty of Medicine, Acıbadem Maslak Hospital, Department of Orthopedics and Traumatology, Büyükdere Cad 40, Maslak 34457, Istanbul, Turkey.

Orthopaedics & Traumatology, Surgery & Research : OTSR
|November 23, 2016
PubMed
Summary

This study examines the consequences of using oxidized zirconium femoral heads in total hip arthroplasty (THA) in a way that is not recommended by the manufacturer. Oxidized zirconium is a material that is designed to be durable and resistant to wear, making it suitable for use in hip implants. However, the study found that when these implants were used improperly, they experienced severe wear and failure. The failures occurred when the protective ceramic-like surface of the zirconium was damaged, exposing the softer metal underneath. This exposure led to increased wear when the implant interacted with polyethylene components. The study highlights the importance of following manufacturer guidelines to avoid implant failure.

Keywords:
Hip arthroplastyOxidized zirconium on ceramicOxinium™oxidized zirconiumhip implant failuretotal hip arthroplastymedical device wear

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Area of Science:

  • Orthopedic implant materials
  • Joint replacement surgery
  • Medical device failure analysis

Background:

Orthopedic implants often use materials that balance durability and biocompatibility. Prior research has shown that polyethylene components can wear over time, leading to implant failure. This gap motivated the development of alternative materials like oxidized zirconium. No prior work had resolved the issue of catastrophic wear when these materials are misused. Established knowledge includes the benefits of ceramic-like surfaces in reducing abrasion. However, the specific failure mechanisms of oxidized zirconium in certain conditions remain unclear. This paper's contribution is the documentation of misuse leading to severe wear. The findings offer insight into material limitations under improper use.

Purpose Of The Study:

This study aimed to investigate the consequences of improper use of oxidized zirconium femoral heads in total hip arthroplasty. The specific problem is the unanticipated catastrophic wear observed in clinical settings. The motivation stems from the lack of prior documentation on such failures. The authors sought to understand how these failures occurred despite manufacturer guidelines. The study focused on three cases where misuse led to implant failure. These cases highlight the importance of proper implant use and material compatibility. The purpose was to raise awareness about the risks of deviating from recommended use. The findings contribute to safer clinical practices in orthopedic surgery.

Main Methods:

The study analyzed three clinical cases involving oxidized zirconium femoral heads used in THA. The researchers reviewed patient records and implant details to identify the misuse patterns. They examined the wear mechanisms using post-operative imaging and material analysis. The methods included assessing the damage to the oxidized zirconium surface. The study compared the observed failures with manufacturer guidelines and recommendations. The authors used clinical observations to determine the sequence of events leading to failure. No experimental procedures were conducted; the study relied on case reports and clinical data. The approach focused on documenting the misuse and its consequences.

Main Results:

The strongest finding is the catastrophic in situ wear observed in all three cases. The misuse of Oxinium™ heads led to inevitable implant failure. The damaged oxidized zirconium surface exposed the underlying soft zirconium metal. This exposure accelerated wear when the head interacted with polyethylene. The failures occurred despite the absence of manufacturer recommendations for such use. The study found no prior advice or indication supporting the misuse. The results suggest that improper use significantly increases the risk of implant failure. The findings highlight the importance of adhering to manufacturer guidelines.

Conclusions:

The authors concluded that misuse of oxidized zirconium femoral heads can result in catastrophic wear. The findings suggest that the material's protective properties are compromised when used improperly. The study emphasizes the need for strict adherence to manufacturer guidelines. The authors propose that clinicians should be aware of the risks associated with off-label use. The results indicate that the failure mechanisms are linked to material exposure and increased wear. The authors note that no prior work had resolved the issue of misuse-related failures. The conclusions align with the observed clinical outcomes in the three cases. The study underscores the importance of proper implant use in orthopedic surgery.

The main outcome is catastrophic in situ wear and inevitable implant failure, as observed in three clinical cases.

Oxidized zirconium has a ceramic-like hard surface that is resistant to abrasion, making it suitable for reducing wear in THA.

Exposure of soft zirconium metal increases wear when interacting with polyethylene, leading to implant failure.

Polyethylene accelerates wear when exposed to the underlying soft zirconium metal after surface damage.

Manufacturer guidelines are crucial as the misuse occurred despite the absence of any recommendation for such use.

The authors propose that clinicians should be aware of the risks of off-label use and adhere strictly to manufacturer guidelines.