Comparison Canal Filling Ratio And Femoral Bone Density Change Between Wedge Taper And Anatomical Stem Design

Abstract

AbstractPurposecomparative the outcome of proximal femoral bone density change in follow-up x-ray film and proximal filling ratio of stem between anatomical and double taper wedge cementless stem designMethodspost-operative follow film of up to 1 year of patients who had undergone Total hip arthroplasty between 2552-2563, which is match inclusion criteria, was obtained from the radiology department. The measurement of Canal filling ratio (Lesser trochanter, 2 cm above LT and 7 cm below LT) and Femoral bone density change using optimal densitometry method to compare between Anatomical and double wedge taper stem type.Result92 patients,76% female, and 24% male, were match the inclusion criteria for this study. The mean age was 53.86±13.00 years old. The canal filling ratio in the double wedge taper group (Accolade II) was significantly higher than the anatomical stem group (ABGII) (p<0.001, p<0.001, p=0.013) in all levels of measurement. There were no significant differences between both types of the stem in femoral bone density change in zone 1,4. However. There were significant differences in femoral bone change, in which bone loss was higher in the anatomical stem group, in zone 7 (−25 VS −17, P= 0.010)ConclusionDouble taper wedge stem design had a significantly higher canal filling ratio than the Anatomical stem at all levels and less femoral bone density loss in follow-up post-operative film at Zone 7. However, in zone 1,4, There was no significant difference in femoral bone density loss.