Eckardt A, Karbowski A, Schwitalle M, Herbsthofer B, Kreitner K F
Klinik für Orthopädie, Johannes Gutenberg-Universität, Mainz.
Rofo. 1997 Oct;167(4):355-60. doi: 10.1055/s-2007-1015544.
Of the study was to evaluate radiological alterations of the femoral bone after implantation of two different prostheses.
81 patients with 87 hips underwent total hip arthroplasty by using the Zweymüller-stem fixating in the medullary canal, and 175 patients with 182 ABG-stems with a proximally fixating, anatomical design were followed up clinically and radiologically.
Adaptive bone remodelling in Zweymüller-stems showed in some patients thickening of the cortex of the femur and proximal bone-stock loss; reactive lines were seen in the proximal areas surrounding the prosthesis. Radiographs of patients with ABG-stems showed these lines in the distal, smooth part of the prosthesis and cancellous densification occurred in the area of load transfer distal to the trochanteric region.
Typical x-ray findings due to various stem designs were identified and can be transferred to other cementless prostheses and should be considered if there is a suspicion of aseptic loosening.
