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A Monoblock Porous Tantalum Acetabular Cup Has No Osteolysis on CT at 10 Years

  • Symposium: Papers Presented at the Hip Society Meetings 2010
  • Published:
Clinical Orthopaedics and Related Research®

Abstract

Background

Aseptic osteolysis has been the single most important factor limiting the longevity of a THA. A great deal of attention has been focused on the development of implants and materials that minimize the development of osteolysis. The monoblock porous tantalum acetabular cup was designed to minimize osteolysis, but whether it does so is unclear.

Questions/purposes

We evaluated the incidence of osteolytic lesions after THA using a monoblock porous tantalum acetabular component.

Methods

We retrospectively reviewed 51 patients who had a THA using a monoblock porous tantalum acetabular cup. At a minimum of 9.6 years postoperatively (average, 10.3 years; SD, 0.2 years; range, 9.6–10.8 years), a helical CT scan of the pelvis using a metal suppression protocol was obtained. This scan was evaluated for the presence of osteolysis.

Results

We found no evidence of osteolysis on CT scan at an average of 10.3 years.

Conclusions

Osteolysis appears not to be a major problem at 10 years with this monoblock porous tantalum acetabular component, but longer term followup will be required to determine whether these findings persist.

Level of Evidence

Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.

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Acknowledgments

We thank Dr. Renee Yap for her assistance in the evaluation of the CT scans for this paper.

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, 676 N St Clair, Suite 1350, Chicago, IL, 60611, USA

    Todd C. Moen MD, Noel Salaz BA & Jason Ghodasra BA

  2. Northwestern Orthopaedic Institute, Chicago, IL, USA

    Raju Ghate MD & S. David Stulberg MD

Authors
  1. Todd C. Moen MD
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  2. Raju Ghate MD
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  3. Noel Salaz BA
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  4. Jason Ghodasra BA
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Corresponding author

Correspondence to Todd C. Moen MD.

Additional information

Each author certifies that he or she has no commercial associations (eg, consultancies, stock ownership, equity interest, patent/licensing arrangements, etc) that might pose a conflict of interest in connection with the submitted article.

Each author certifies that his or her institution approved the human protocol for this investigation, that all investigations were conducted in conformity with ethical principles of research, and that informed consent for participation in the study was obtained.

This study was performed at Northwestern Memorial Hospital and Northwestern Orthopaedic Institute.

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Moen, T.C., Ghate, R., Salaz, N. et al. A Monoblock Porous Tantalum Acetabular Cup Has No Osteolysis on CT at 10 Years. Clin Orthop Relat Res 469, 382–386 (2011). https://doi.org/10.1007/s11999-010-1500-8

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  • DOI: https://doi.org/10.1007/s11999-010-1500-8

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