Early Failure of a Modular Femoral Neck Total Hip Arthroplasty Component
A Case Report
By David A.J. Wilson, MASc, BEng, Michael J. Dunbar, MD, FRCSC, PhD, John D. Amirault, MD, FRCSC, and Zoheir Farhat, PhD, PEng
School of Biomedical Engineering (D.A.J.W. and M.J.D.) and Departments of Surgery (D.A.J.W., M.J.D., and J.D.A.) and Materials Engineering (Z.F.), QEII Health Sciences Centre
The Journal of Bone & Joint Surgery Vol. 92-a June 2010
The PROFEMUR Z modular total hip arthroplasty component (WrightMedical Technology, Arlington, Tennessee) is a primary total hip replacement system that offers surgeons the ability to alter the length and version of the femoral neck after the femoral stem has been implanted. The modularity is achieved through taper interfaces at the distal and proximal ends of the femoral neck. The proximal femoral neck taper engages with the femoral head, and the distal taper engages with the femoral stem.
In this report, we present the case of a patient who twice underwent total hip arthroplasty revision surgery. The first revision was due to a fractured ceramic femoral head. The second revision was due to a complete fracture of the modular femoral neck. This report will focus on the second revision, and, specifically, the failure of the modular femoral neck at the junction of the neck to the femoral stem. The patient was informed that data concerning the case would be submitted for publication, and he consented.
- Periprosthetic bone mineral density and fixation of the uncemented CLS stem
- Cementless Acetabular Socket Revisions Using Metasul Metal-on-Metal Bearings
- Uncemented and cemented primary total hip arthroplasty in the Swedish Hip Arthroplasty Register
- Analysis of wear of retrieved metal-on-metal hip resurfacing implants revised due to pseudotumours
- Long-Term Survival and Reason for Revision of Wagner Resurfacing Hip Arthroplasty
- The Accuracy of Digital Templating in Uncemented Total Hip Arthroplasty
- Early Failure of a Modular Femoral Neck Total Hip Arthroplasty Component