Arthroscopy Combined with 3D Printing in Treatment of Trimalleolar Fracture

An Chunyu; Liu Peilei; Li Qiang

doi:10.3969/j.issn.1004-5775.2025.09.009

Abstract：Objective:To analyze the effect of invasive arthroscopy combined three-dimensional(3D)printing model.Methods:A prospective clinical case-control study was conducted,a total of 124 patients with fresh closed and unilateral trimalleolar fracture admitted to the hospital from October 2018 to October 2020 were randomly selected as the research objects.Random number method was used to divide 124 patients into control group and observation group,with 62 cases in each group.Routine follow-up was conducted for 1 year after surgery,with 59 patients in the control group and 60 patients in the observation group completing clinical follow-up.The control group was treated with arthroscopy and preoperative CT three-dimensional reconstruction,and the observation group was treated with arthroscopy and 3D printing model.The operation related indexes between the two groups were compared,including operation time,fluoroscopy times,bleeding volume,drainage volume,complications and reduction quality,1 d,3 d and 7 d after operation pain visual analogue scale(VAS)score,rehabilitation indexes and evaluate clinical effect.Results:The operation time in observation group was shorter than that in control group,fluoroscopy time was less,complications rate was lower,and the excellent and good rate of reduction quality was higher(t=12.306,3.659;P<0.05;χ2=5.039,4.365;P<0.05).The pain VAS score after 1d and 3d in observation group were lower than control group(t=4.002,4.231;P<0.05).What's more,the complete weight-bearing time in observation group was shorter than control group(t=4.526,P<0.05).There was no difference of AOFAS score,excellent and good rate between the two groups after 1 year follow-up(t=1.102,P>0.05;χ2=0.474,P>0.05).Conclusion:Arthroscopy combined with 3D printing model for trimalleolar fracture can improve the matching degree between intraoperative internal fixation and fracture,save operation time,reduce operation trauma,improve reduction quality,reduce postoperative pain,and promote early rehabilitation,which has good clinical effect.