A simple method for restoring the femoral head center in hip arthroplasty: a 3-dimensional analysis in the Chinese population

Abstract

Background Various authors have successfully demonstrated that the distance from the greater trochanter to the femoral head center (GTFHC) and the distance from the lesser trochanter to the femoral head center (LTFHC) can be used as parameters to determine the recovery of the femoral head center (FHC) during hip arthroplasty. It is necessary to undertake an anatomical study concerning the correlations between the greater trochanter (GT), the lesser trochanter (LT), and the FHC using data obtained from the 3D-CT reconstruction method. Methods The study comprised 293 patients (151 males and 142 females), with an average age of 65.06 years. The femoral head diameter(FHD), the linear distance from FHC to GT (GTFHC), and the linear distance from FHC to LT(LTFHC) were all measured and recorded data. The correlation between FHD with LTFHC and GTFHC was assessed using Pearson correlation coefficients, and the ratio of LTFHC and GTFHC to FHD was calculated from this ratio. All measured parameters were compared between the left and right sides and the sexes of the participants. Results The average ratios of GTFHC/FHD and LTFHC/FHD were 0.99 and 0.95, respectively .96% of the LTFHC had absolute lateral differences of < 4 mm . 92% of the GTFHC had absolute lateral differences of < 4 mm. Conclusion LTFHC and GTFHC are reliable reference parameters for preoperative planning and reconstruction of FHC of hip arthroplasty. The ratio displayed in this research may yield insight into a practical and straightforward method for orthopedic surgeons to perform hip arthroplasty in patients with femoral neck fractures. Ratios from studies based on the same race may be desirable for future work.

Do Cementless Stems Match Any Hip? A Description of Anthropometric Measurements of the Proximal Femur in Colombia

“…Tian et al. [ 18 ] assessed the relationship between the ATD and the femoral head diameter and determined that the difference between male and female patients was also statistically significant. And similar to what was observed in our study, Wang et al.…”

“…Another limitation of this study was that we did not include measurements for the neck-shaft angle [ 27 ] or the femoral offset, which are also very important anatomical and mechanical parameters to consider during THA [ 28 ]. Furthermore, given the use of the ATD has been debated [ 10 , 17 , 29 ], recent studies conclude that it is a reliable parameter for preoperative planning and recommend templating hips to match the contralateral ATD [ 18 , 21 ]. As it was observed in this study, differences between sides are not statistically significant.…”