Lumbar instrumented posterolateral fusion in spondylolisthetic and failed back patients: a long-term follow-up study spanning 11–13 years
European Spine Journal, 04/30/2012
Turunen V et al. – Group 1 showed the greatest improvements in Oswestry Disability Index and visual analog scale values, Group 2 the lowest and Group 3 the highest preoperative values, and Group 4 the second highest improvements. Patient satisfaction scores were 90.3, 69.7, 63.6 and 80.0 %, respectively, and unplanned reoperation rates were 6.5, 9.1, 31.8 and 20.0 %. Thus, long–term outcomes of lumbar instrumented posterolateral fusion were satisfactory for >80 % of patients, but varied among groups.