Acta Chir Orthop Traumatol Cech. 2009; 76(2):85-89 | DOI: 10.55095/achot2009/018
A Surgical Technique for the Prevention of Femoral Lysis in Cement Total Hip ArthroplastyOriginal papers
- Department of Orthopaedic and Rehabilitation University of Miami School of Medicine, Miami, USA
Femoral bone lysis in total hip arthroplasty is thought to be primarily due to polyethylene or metal debris arising from the femoral or acetabular components. The debris appears to gradually seep into the cement/bone interface, eventually generating the chemical reaction that produces lysis. We experimented with a surgical technique that attempts to construct a proximal bony barrier preventing migration of debris. Following the injection of the acrylic cement and the insertion of the femoral component, but prior to complete polymerization of the cement, bone chips are pressed over the cement, in contact with the viable femoral cortex. The bone chips become rigidly fixed; probably regain viability from the femoral cortex, and seal the proximal femur. In this manner, debris cannot travel into the femoral canal. Although we do not have anatomical evidence that a viable bony seal has formed the absence of lysis and bone/cement radiolucent lines over a period of time ranging from three to fourteen years suggests the permanent presence of a physiological barrier. Attempts to identify the permanency of the bony seal by means of CT scans proved inconclusive.
Keywords: total hips, lysis, femoral lysis, cortical graft
Published: April 1, 2009 Show citation
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