RESUMO
OBJECTIVE: To investigate the preliminary clinical effect of closed reduction and cannulated nail internal fixation for femoral neck fracture assisted by robot navigation and positioning system. METHODS: From July 2019 to January 2020, 16 cases of femoral neck fracture ï¼navigation groupï¼ were treated with closed reduction and internal fixation guided by robot system, including 7 males and 9 females, aged 25 to 72 years old with an average of ï¼53.61±5.45ï¼ years oldï¼Garden classification of fractureï¼3 cases of typeâ , 3 cases of typeâ ¡, 8 cases of type â ¢, 2 cases of type â £. Non navigation group ï¼control groupï¼ï¼20 cases of femoral neck fracture were treated with closed reduction and hollow nail internal fixation, 8 males and 12 females, aged 46 to 70 years old with an average of ï¼55.23±4.64ï¼ years oldï¼Garden typeâ in 2 cases, typeâ ¡in 4 cases, type â ¢ in 11 cases, type â £ in 3 cases. The operation time, fluoroscopy times, guide needle drilling times, screw adjustment times, intraoperative bleeding volume and other indicators of two groups were evaluated. RESULTS: Both groups were followed up for 12 to 18 months with an average of ï¼15.6±2.8ï¼ months. The fractures of both groups were healed without delayed union and nonunion. There was no significant difference in healing time between two groupsï¼P=0.782ï¼. There was no significant difference in Harris scores between two groups at the last follow-upï¼P=0.813ï¼. There was no significant difference in operation time between two groupsï¼P>0.05ï¼. There were significant differences between two groups in fluoroscopy times, guide needle drilling times, hollow screw replacement times, and intraoperative bleeding volumeï¼P<0.05ï¼. CONCLUSION: Closed reduction and hollow screw internal fixation assisted by robot navigation system for femoral neck fracture has the advantages of minimally invasive operation, precise screw placement, and reduction of X-ray radiation damage during operation.