| Objective: To study the curative effect of llizarov bone transport technique in the treatment of tibial bone defect and analysis of the influencing factors of postoperative delayed healing or nonunion. Methods: From June 2016 to October 2020, 90 patients with tibial bone defect who were treated in our hospital were selected as the research objects, and all patients were treated with llizarov bone transport technique. The operation effect index and complication rate were recorded and counted. And the outpatient follow-up observation of patients, the patients with delayed healing or nonunion was counted. The patients were divided into healing group and delayed healing or nonunion group. The clinical data of the two groups were compared and analyzed. The risk factors of postoperative delayed healing or nonunion of patients were analyzed by univariate analysis and multivariate Logistic regression analysis. Results: The hospitalization time was (12.11±2.98) d, the starting weight-bearing time was (45.39±7.78) d, and the complete weight-bearing time was (76.41±11.23) d. After follow-up observation, 29 patients had postoperative delayed healing or nonunion, the incidence rate was 32.22%. The incidence of wound infection, combined soft tissue injury, combined with fibula fracture, postoperative premature activity and smoking history in the delayed healing or nonunion group were higher than those in healing group (P<0.05). Logistic multiple regression analysis showed that wound infection, soft tissue injury, combined with fibula fracture, postoperative premature activity and smoking history were risk factors for delayed healing or nonunion (P<0.05). Conclusion: Llizarov bone transport technique has a good efficacy in the treatment of tibial bone defect, with short operation time, less intraoperative blood loss, shorter hospital stay, shorter weight-bearing start time, low complication rate, and better treatment safety. However, patients are prone to delayed healing or nonunion after surgery. It may be related to wound infection, soft tissue injury, fibula fracture, premature postoperative activity and long-term smoking. |
