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Survivorship of a Low-stiffness Extensively Porous-coated Femoral Stem at 10 Years

  • Symposium: Papers Presented at the Hip Society Meetings 2009
  • Published:
Clinical Orthopaedics and Related Research®

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Abstract

A novel low-stiffness extensively porous-coated total hip femoral component was designed to achieve stable skeletal fixation, structural durability, and reduced periprosthetic femoral stress shielding. In short- to intermediate-term clinical review, this implant achieved secure biologic fixation and preserved periprosthetic bone. We retrospectively reviewed all 102 prospectively followed patients (106 implants) with this implant to document the longer-term implant survivorship, clinical function, fixation quality, and periprosthetic bone preservation. Ninety-seven patients with 101 implants had current followup or were followed to patient death (range, 1–14 years; average, 10 years). Eighty-six living patients were followed for an average implant survivorship of 10 years. There were no known femoral implant removals. The average Harris hip score at 10-year followup was 98. Radiographs demonstrated secure implant fixation and maintenance of periprosthetic bone. These data suggest this implant design provided long-term function characterized by extensive fixation, structural durability, and radiographic appearance of maintained periprosthetic cortical thickness and density.

Level of Evidence: Level I, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.

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Acknowledgments

We thank Kimberly J. Rowe and Daniel Reyner, PhD, for their assistance in this study.

Author information

Authors and Affiliations

  1. Hartzband Center for Hip and Knee Replacement, Paramus, NJ, USA

    Mark A. Hartzband MD

  2. Orthopaedic Surgery Department, The Ohio State University, Columbus, OH, USA

    Andrew H. Glassman MD

  3. Orthopaedic Surgery Department, Case Western University, Cleveland, OH, USA

    Victor M. Goldberg MD

  4. Jordan-Young Institute, Virginia Beach, VA, USA

    Louis R. Jordan MD & Louis C. Jordan MD

  5. 40 Windcliff Drive, Asheville, NC, 28803, USA

    Roy D. Crowninshield PhD

  6. Anderson Orthopaedic Clinic, Alexandra, VA, USA

    Kevin B. Fricka MD

Authors
  1. Mark A. Hartzband MD
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  2. Andrew H. Glassman MD
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  3. Victor M. Goldberg MD
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  4. Louis R. Jordan MD
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  5. Roy D. Crowninshield PhD
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  6. Kevin B. Fricka MD
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  7. Louis C. Jordan MD
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Corresponding author

Correspondence to Roy D. Crowninshield PhD.

Additional information

One or more of the authors (MAH, AHG, VMG, LRJ, RDC) have received financial support from Zimmer, Inc, Warsaw, IN. One of more of the authors (MAH, AHG, VMG, LRJ, RDC) certifies that he or she has or may receive payments or benefits from a commercial entity related to this work.

This study has received IRB approval and was initiated as part of an FDA-approved Investigation Device Exemption. 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 conducted at Case Western University, Anderson Orthopaedic Clinic, Hartzband Center for Hip and Knee Replacement, and the Jordan-Young Institute.

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Hartzband, M.A., Glassman, A.H., Goldberg, V.M. et al. Survivorship of a Low-stiffness Extensively Porous-coated Femoral Stem at 10 Years. Clin Orthop Relat Res 468, 433–440 (2010). https://doi.org/10.1007/s11999-009-0950-3

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  • DOI: https://doi.org/10.1007/s11999-009-0950-3

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