[NRD assisted Ilizarov technique in the treatment of infected bone and soft tissue defect of tibia].

Objective: To investigate the clinical effect of NRD assisted Ilizarov technique in the treatment of infected bone and soft tissue defect of tibia.

Methods: All 48 patients with infected bone and soft tissue defect of tibia were randomly divided into study group and control group from March 2013 to December 2020. There were 34 males and 14 females, aged from 24 to 55 years old with an average of (40.54±11.64) years old. There were 25 patients in the study group, including 17 males and 8 females, aged from 31 to 55 years old with an average of (41.36±9.69) years old. The study group were treated with NRD assisted with Ilizarov bone transport technique. There were 23 patients in control group, including 17 males and 6 females, aged from 24 to 53 years old with an average of(38.61±8.76) years old. The control group were treated with traditional bone transport technique. The curative rate, recurrence rate, incidence rate of pin track infection, time of using antibiotics, time of wound healing, time of carrying external fixation, time of bone transport, time of bone healing and postoperative function were used to evaluate the therapeutic effect of the two groups.

Results: The follow-up period was from 12 to 62 months with an average of (33.0±7.2) months. At the final follow-up, there was no significant difference in the curative rate between the two groups (>0.05). The recurrence rate in the study group was lower than that in the control group(<0.05). The incidence of pin track infection in the study group was lower than that in the control group (<0.05). The time of using antibiotics and wound healing in the study group was shorter than that in the control group(<0.05). There was no significant difference in the time of bone transport and carrying of external fixation between the two groups(>0.05). There was no significant difference in bone healing and postoperative function between the two groups(>0.05).

Conclusion: NRD assisted Ilizarov technique can achieve satisfactory results in the treatment of infected bone and soft tissue defect of tibia and shorten the treatment period and the time of using antibiotics. It is worthy of development in clinic.