Abstract: Abstract:ObjectiveTo study the efficacy of minimally invasive channelassisted oblique lumbar interbody fusion（OLIF） for singlesegment lumbar instability.MethodsThe clinical data of 56 patients with singlesegment lumbar instability who presented in our hospital from June 2014 to June 2016 were analyzed retrospectively. According to surgical procedure, they were divided into OLIF group and posterior lumbar vertebral interbody fusion (PLIF) group, with 28 cases for each group, and were performed miniinvasive channelassisted OLIF and PLIF. The VAS and ODI score were recorded and compared between two groups.ResultsThe operative time was （225±35）min and （135±2）min, and the blood loss was （105±22）ml and (226±85）ml in OLIF group and PLIF group respectively. There was statistic difference in operation time and blood loss volume between two groups (P<0.01). All cases were followed up for 12 to 16 months with an average time of 13.5 months. The VAS and ODI scores were improved 12 months after the surgery than before the surgery in both OLIF group and PLIF group, and the differences between the two groups were statistically significant (P<0.05). There was no statistical difference in both VAS and ODI before the surgery between two groups (P>0.05)，while VAS and ODI of OLIF group were less than those of PLIF group in 1, 6 and 12 months after the surgery, and the differences
2018, Vol. 22 
