Comparison of clinical outcomes following minimally invasive lateral interbody fusion stratified by preoperative diagnosis

Purpose Lumbar fusion has been shown to be effective in treating a variety of degenerative spinal conditions, though significant differences exist in the magnitude of clinical improvement across different surgical diagnoses. With modern, minimally disruptive approaches for fusion, diagnosis-specific differences in clinical improvement may be reduced. The purpose of this study is to report and compare interim clinical improvements in patients treated with XLIF for various degenerative lumbar conditions. Methods 160 patients underwent XLIF for either degenerative spondylolisthesis ( n = 68), degenerative disc disease ( n = 20), adjacent segment disease ( n = 26), or post-laminectomy syndrome ( n = 46). Average age was 61 years and 66 % were female. Mean BMI was 28.9 kg/m 2 . 37 % were smokers, 23 % had diabetes mellitus, 22 % had depression. Mean age was highest for ASD patients (66 years) and lowest for DDD patients (48 years) ( p