Abstract:Objective To investigate the efficacy and safety of thoracoscopy assisted titanium-nickel memory alloy plate internal fixation in patients with multiple rib fractures.Methods 87 patients with multiple rib fractures from January 2018 to December 2019 were randomly divided into control group (n = 43) and observation group (n = 44); The control group was given chest plate external fixation, the observation group was given thoracoscopy-assisted titanium-nickel memory alloy steel plate internal fixation treatment; The recovery situation, lung function indexes, treatment effect and complications of the two groups were compared.Results The ICU stay time, mechanical ventilation time, hospitalization time, time to get out of bed and chest drainage time of the observation group were significantly shorter than those of the control group [(3.74 ± 0.63) d vs (5.58 ± 1.21) d, (2.68 ± 1.65) d vs (9.78 ± 2.36) d, (19.46 ± 3.27) d vs (26.85 ± 2.73) d, (10.18 ± 2.22) d vs (16.23 ± 2.42) d, (4.72 ± 1.91) d vs (7.23 ± 2.12) d], the visual analogue score (VAS) of the observation group was significantly lower than that of the control group (3.62 ± 1.21) vs (5.89 ± 1.34)] (P < 0.05). The FEV1, MVV and forced vital capacity (FVC) of the observation group were significantly better than those of the control group [(101.37 ± 18.46)% vs (88.82 ± 16.15)%, (89.21 ± 14.36) vs (68.37 ± 18.46) L/min, (94.26 ± 18.25)% vs (82.15 ± 12.67%)] (P < 0.05). The effective rate of the observation group (95.45%) was significantly higher than that of the control group (69.77%) (P < 0.05). The incidence of pulmonary infection, atelectasis and chest deformity of the observation group were significantly lower than those of the control group (13.64% vs 37.21%, 18.18% vs 39.53%, 0.00% vs 32.56%) (P < 0.05).Conclusion Thoracoscopy assisted internal fixation of titanium-nickel memory alloy steel plate can significantly improve patients' recovery and lung function, improve treatment efficiency, and reduce complications.