Abstract:Objective To evaluate the therapeutic effects of the HoloSight orthopedic trauma surgery robot (hereafter referred to as the HoloSight system) in tension screw fixation for patients with pelvic fragility fractures.Methods A total of 74 patients with fragility pelvic fractures admitted to our hospital from January 2021 to January 2023 were selected for the study. Patients were randomly divided into a control group and an observation group, with 37 patients in each group, using a ball-drawing method. The control group received closed reduction and manual screw placement, while the observation group underwent tension screw fixation assisted by the HoloSight visualization system. Perioperative indicators (surgery time, intraoperative blood loss, number of screw adjustments, first ambulation time, hospital stay) were recorded. Pain scores (VAS) were compared at 6, 12, 24, 48 and 72 h postoperatively. Stress indicators [angiotensin Ⅱ (Ang Ⅱ), adrenocorticotropic hormone (ACTH), cortisol (Cor) ] were compared preoperatively and 24h postoperatively. Harris hip joint function scores, majeed pelvic fracture system scores, berg balance scale scores, and bone metabolism indicators [alkaline phosphatase (ALP), osteocalcin (BGP), osteoprotegerin (OPG) ] were compared preoperatively and 6 months postoperatively.Results The operative time for the observation group was shorter than that for the control group, with less intraoperative blood loss, fewer screw adjustments, and shorter initial out-of-bed and hospitalization times (P <0.05). The postoperative VAS scores at rest at 6, 12, 24, 48, and 72 hours were compared between the observation group and the control group using repeated measures ANOVA, which showed: (1) significant differences in VAS scores at different time points (F =120.930, P =0.000); (2) significant differences in VAS scores between the observation and control groups, with lower scores observed in the observation group (F =172.400, P =0.000); (3) significant differences in the trends of VAS score changes between the two groups (F =6.002, P =0.000). The differences in Ang Ⅱ, ACTH, and Cor levels preoperatively and 24 hours postoperatively were lower in the observation group than in the control group (P <0.05). The differences in Harris, Majeed, and BBS scores preoperatively and 6 months postoperatively were higher in the observation group than in the control group (P <0.05). Similarly, the differences in ALP, BGP, and OPG levels preoperatively and 6 months postoperatively were higher in the observation group than in the control group (P <0.05). The overall incidence of complications within 6 months postoperatively was lower in the observation group compared to the control group (P <0.05)Conclusion HoloSight-assisted tension screw fixation helps reduce postoperative pain in patients with fragility pelvic fractures and promotes postoperative recovery.