Abstract:[Objective] To compare the clinical outcomes of cemented long-stem (LS) versus standard-stem (SS) femoral components in hemiarthroplasty (HA) for unstable intertrochanteric fractures in the elderly. [Methods] A retrospective study was performed on 120 el- derly patients who received HA for unstable femoral intertrochanteric fractures in our hospital from January 2016 to January 2020. Accord- ing to the results of doctor-patient communication preoperatively, 60 patients had cemented LS used, while the remaining 60 patients re- ceived SS. The perioperative period, follow- up and imaging data were compared between the two groups. [Results] All patients in both groups had HA performed successfully without serious complications. There were no significant differences in operation time, intraoperative blood loss, intraoperative fluoroscopy times, postoperative drainage volume, incision healing grade, and hospital stay between the two groups (P>0.05) , but the LS group had significantly longer incision length than the SS group (P<0.05) , and the former resumed postopera- tive walking significantly earlier than the latter (P<0.05) . Of them, a total of 107 patients were followed up for more than 12 months, and there was no a significant difference in the time to return full weight-bearing activities between the two groups (P>0.05) . The Harris score, hip extension-flexion range of motion (ROM) and hip interna-external rotation ROM increased significantly in both groups over time (P< 0.05) , whereas which proved not significantly different between the two groups at any corresponding time points (P>0.05) . Radiographical- ly, there were no significant differences in the quality of fracture reduction, fracture healing time, and bilateral femoral length discrepancy between the two groups (P>0.05) . [Conclusion] Both long-stem and standard-stem femoral components used in hemiarthroplasty are effec- tive treatment for unstable intertrochanteric fractures in the elderly without significant difference in term of short-term outcomes, however, the consequences in long term needs to be further studied.