The clinical effects of XLIF and OLIF in the treatm ent of degenerative scoliosis and its influence of functional recovery of patients

Objective To explore the effects of minimally invasive extreme lateral interbody fusion(XLIF) and minimally invasive oblique lateral lumbar interbody fusion(OLIF) on the functional recovery of patients with degenerative scoliosis, and to provide a reference for the choice of treatment of degenerative scoliosis. Methods Total 100 patients with degenerative scoliosis who were operated in our hospital from January 2016 to January 2019 were divided into XLIF group(56 cases) and OLIF group(44 cases). XLIF was performed in XLIF group and OLIF in OLIF group. The clinical indexes, Cobb's angle, PI-LL, functional recovery, pain and complications were compared between the two groups. Results Six month after operation, the Cobb's angle and PI-LL[(5.00±1.10)d,(13.52±2.13)°] in the OLIF group were lower than those in the XLIF group[(5.12±1.09)°,(13.68±2.15)°], with no significant difference(t=0.544, 0.371; P=0.587, 0.712).The DOI and NRS scores(8.00±0.50, 1.13±0.02) in the OLIF group were lower than those in the XLIF group(11.27±0.68, 2.49±0.10, t=26.710, 88.740, all P<0.01). The JOA score(25.66±3.58) of the OLIF group was higher than that of the XLIF group(19.68±2.46, t=9.884, P=0.001). The incidence of operative complications in the OLIF group(2.27%) was lower than that in the XLIF group(17.86%, χ²=4.625, P=0.032). Conclusion Compared with XLIF, OLIF can significantly reduce the symptoms of lumbar pain in patients with degenerative scoliosis, promote the recovery of function, and has higher safety, which is worthy of clinical application.