Robot-Assisted Closed Reduction and Internal Fixation for Intertrochanteric Femoral Fractures

Inclusion Criteria： * Age 18 to 80 years, inclusive. * Male or female participants. * Acute, closed intertrochanteric femoral fracture. * AO/OTA classification 31-A intertrochanteric femoral fracture. * Fracture requiring closed reduction and proximal femoral intramedullary nailing. * Injury-to-surgery interval no more than 14 days. * Participant or legally authorized representative is fully informed about the study. * Written informed consent voluntarily provided by the participant or legally authorized representative. Exclusion Criteria： * Open fracture. * Pathological fracture. * Old fracture with an injury-to-surgery interval greater than 14 days. * Multiple fractures. * Previous surgery involving the affected hip joint. * Deformity of the affected hip joint. * Severe osteoarthritis of the affected hip joint. * Significant neuromuscular disease affecting lower limb function. * Significant neuromuscular disease affecting postoperative rehabilitation. * Severe systemic comorbidity that makes the participant unable to tolerate anesthesia or surgery. * Severe organ dysfunction that makes the participant unable to tolerate anesthesia or surgery. * Pregnancy. * Lactation. * Cognitive impairment that prevents compliance with postoperative follow-up or rehabilitation protocols. * Active psychiatric illness that prevents compliance with postoperative follow-up or rehabilitation protocols. * Other condition that prevents compliance with postoperative follow-up or rehabilitation protocols. * Current participation in another clinical trial that may interfere with evaluation of this study's outcomes.