Abstract: Objective To explore the influence of external fixation brace combined with lower limb rehabilitation robot system on fracture healing and function recovery in patients with traumatic lower limb fractures.Methods From June 2021 to December 2022,30 patients with traumatic lower limb fractures who were treated with external fixation brace were collected as control group.From January 2023 to June 2024,32 patients with traumatic lower limb fractures who received external fixation brace combined with lower limb rehabilitation robot system were included in observation group.The fracture healing status,pain score,lower limb function recovery [Holden functional ambulation category (FAC) grading,Berg balance scale (BBS),Fugl-Meyer lower limb motor function score scale (FMA-LL) score],knee range of motion and complications were compared between groups.Results After treatment,the lower limb weight-bearing time and fracture healing time in observation group with (35.37±5.96) days and (87.95±9.76) days were shorter compared with (39.25±6.62) days and (95.14±11.63) days in control group (P<0.05).The pain scores at 1 month and 3 months after treatment in observation group with (2.94±0.72) points and (1.23±0.29) points were lower than (3.34±0.77) points and (1.96±0.51) points in control group (P<0.05).The FAC grading,BBS score and FMA-LL score with (3.96±0.48) grade,(36.25±5.46) points and (25.17±3.28) points after treatment in observation group were higher than (3.59±0.51) grade,(32.81±5.14) points and (21.86±3.02) points in control group (P<0.05).The knee flexion and abduction in observation group with (88.22±14.25) ° and (79.37±12.23) ° were higher than 79.93±11.58) ° and (71.34±10.64) ° in control group (P<0.05).The total incidence rate of complications in observation group (3.13%) was lower compared to control group (20.00%) (P<0.05).Conclusion External fixation brace combined with lower limb rehabilitation robot system can accelerate lower limb weight-bearing,promote fracture healing,reduce pain,and enhance lower limb function,and it has few complications.

Key words: external fixation brace, lower limb rehabilitation robot system, traumatic lower limb fractures, fracture healing