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RESEARCH PRODUCT

Radiologische Veränderungen nach Implantation zweier unterschiedlicher zementfreier Hüftschaftsysteme

A. KarbowskiB. HerbsthoferK. F. KreitnerM. SchwitalleA. Eckardt

subject

medicine.medical_specialtyMedullary cavitybusiness.industrymedicine.medical_treatmentStress shieldingProsthesisSurgeryBone remodelingmedicine.anatomical_structureOrthopedic surgeryMedicineUpper limbRadiology Nuclear Medicine and imagingFemurImplantbusiness

description

PURPOSE: Of the study was to evaluate radiological alterations of the femoral bone after implantation of two different prostheses. METHODS: 81 patients with 87 hips underwent total hip arthroplasty by using the Zweymuller-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. RESULTS: Adaptive bone remodelling in Zweymuller-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. CONCLUSION: 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.

https://doi.org/10.1055/s-2007-1015544