AI Article Synopsis
- The study aimed to compare the radiological changes in femoral bones after using two different types of hip prostheses: Zweymüller and ABG-stems.
- A total of 81 patients received Zweymüller-stems while 175 patients got ABG-stems, with follow-up assessments for both clinical and radiological outcomes.
- The results showed distinct radiographic patterns for each prosthesis type, which could aid in identifying potential issues like aseptic loosening in other cementless implants.
Article Abstract
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 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.
Results: 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.
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.
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| http://dx.doi.org/10.1055/s-2007-1015544 | DOI Listing |
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