Kim YH, et al. - In this study, the long-term clinical and radiographic results, survival rates, and complication rates of an ultra-short vs a conventional length cementless anatomic femoral stem were compared. Researchers examined 759 patients (858 hips) (mean age, 56.3 ± 12.9 y) who had an ultra-short cementless anatomic stem and 759 patients (858 hips) (mean age, 54.8 ± 12.3 y) who had a conventional length cementless anatomic stem. In the research, 16.5 years was the mean follow-up (range 14-17) in the ultra-short stem group and 17.5 years (range 17-20) in the conventional stem group. The outcomes of this study demonstrated that the incidence of thigh pain and stress shielding was significantly lower in the ultra-short cementless anatomic stem, although an ultra-short cementless anatomic femoral stem confers equivalent clinical and radiographic outcomes, survival rates, and complication rates to conventional length cementless anatomic stem.