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Trunnion Corrosion as a Cause of Recurrent Pseudotumor

HSS Journal Volume 11, Number 1 February, 2015

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With the introduction of second generation metal-on-metal (MM) hip implants in the mid-1990s, increased interest has arisen regarding the local biological effects of metal wear particles and ions on soft tissues, which have been grouped under the term adverse reactions to metal debris (ARMD). When these reactions constitute a soft tissue mass, they are usually referred to as a pseudotumor [15].

 Histological studies of these masses have shown the presence of features characteristic of a non-specific inflammatory reaction (macrophages and wear particles) but also the presence of perivascular infiltrates of lymphocytes that are suggestive of a hypersensitivity reaction [3, 7, 13].

The first description of a hip implant-related pseudotumor was made in 1988 with a metal-on-polyethylene (MPE) bearing. The mass was attributed to a local response to metal ion release from corrosion at the Morse taper head-neck junction [16]. In 2008, a report of a multisurgeon experience with MM hip ....

This article appears in the HSS Journal: Volume 11, Issue 1.
View the full HSS Journal at springerlink.com.

About the HSS Journal

HSS Journal, an academic peer-reviewed journal published three times a year, February, July and October. The Journal accepts and publishes peer reviewed articles from around the world that contribute to the advancement of the knowledge of musculoskeletal diseases and disorders.


Alejandro D. Zylberberg, MD

Division of Orthopedics, Hospital del Trabajador, Santiago, Chile

Isabelle Catelas, PhD

Department of Mechanical Engineering, Department of Surgery, Department of Biochemistry, Microbiology and Immunology University of Ottawa, Canada

Luca Gala, MD

Department of Surgery, University of Ottawa, Canada

Paul R. Kim, MD, FRCSC

Department of Surgery, University of Ottawa, Canada


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