Outcomes in minimally invasive transforaminal lumbar interbody fusion for bilateral isthmic spondylolisthesis on lumbar spine in adolescent / 中国医师进修杂志

ABSTRACT

Objective To explore the clinical efficacy of minimally invasive transforaminal lumbar interbody fusion (MIS TLIF) for bilateral isthmic spondylolisthesis on lumbar spine in adolescents. Methods Twentyone patients with bilateral isthmic spondylolisthesis on lumbar spine who received MIS TLIF from February 2012 to April 2014 were enrolled. Fourteen male, aged from 15 to 20 years, 16.3 years on average and 7 female, aged from 14 to 20 years, 15.6 years on average. The clinical outcome after operation was analyzed according to the low back pain and leg pain after operation which analyzed by visual analog scale (VAS) and Oswestry dysfunction index (ODI). The bone fusion were also recorded after surgery by using CT scan reconstruction. Results All cases were followed up 23.7 months on average. The VAS scores of lower back pain preoperative and at the last followup was (8.4 ± 1.2) scores and (2.3 ± 0.8) scores, the scores of ODI preoperative and at the last followup was (72.6 ± 7.4) scores and (29.7 ± 5.3) scores, there were significant differences (P < 0.05). At the last followup, there was no instrument failure noted in all patients,18 patients had complete bone union, while nonfusion were 3 patients. Conclusions MIS TLIF not only have the characteristic of less invasive, but can significantly release clinical symptom and can obtain higher rate of bone union.