Abstract:Objective To investigate the safety and efficacy of minimally invasive tethered cord release in the treatment of children with tethered cord syndrome (TSC) alone.Methods A total of 82 children with TSC alone treated in our hospital from December 2017 to December 2020 were randomly divided into control group (n = 41) and observation group (n = 41). All children were treated with resection of the filum terminale only. The children in the control group were treated with traditional surgery, while the children in the observation group were treated with minimally invasive surgery. The children were followed up for 6 months after operation. The length of hospital stay, the incision size, the clinical efficacy right after operation and at the end of follow-up, changes of visual analogue scale (VAS) score and Japanese Orthopaedic Association scale (JOA) score before and after operation and after 6 months of follow-up, and postoperative complications were compared between the two groups.Results The length of hospital stay of the observation group was shorter than that of the control group (P < 0.05), and the incision size of the observation group was smaller than that of the control group (P < 0.05). There was no significant difference in the overall effective rate between the two groups after operation and at 6-month follow-up (P > 0.05). The VAS and JOA scores of the observation group and the control group were compared before operation, after operation, and after 6 months of follow-up, using repeated measures analysis of variance. The results revealed that there were differences in the VAS and JOA scores at different time points (F = 2.507 and 4.142, P = 0.014 and 0.000) and between the observation group and the control group (F = 4.913 and 2.229, P = 0.000 and 0.029), and that there were differences in the change trend of VAS and JOA scores between the two groups (F = 35.944, 144.192, 126.034 and 167.373, all P = 0.000). The overall incidence of postoperative complications in the observation group was lower than that in the control group (P < 0.05).Conclusions Minimally invasive tethered cord release exhibits great efficacy in the treatment of children with TSC alone. Specifically, it can shorten the length of hospital stay, relieve pain and improve the function of lumbar spine effectively and safely.