Are Patient-Reported Outcomes of Minimally Invasive Transforaminal Lumbar Interbody Fusion Influenced by Preoperative Mental Health?

Abstract

This was a retrospective review of prospectively collected data. Few studies have described the relationship between mental health and patient-reported outcome measures (PROMs) after minimally invasive spine surgery. Prior studies on open surgery included small cohorts with short follow-ups. Patients undergoing primary minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) for degenerative pathology were retrospectively reviewed and stratified by Short Form (SF-36) Mental Component Summary (MCS): low MCS (<50, n = 436) versus high MCS (≥50, n = 363). PROMs assessed were back pain, leg pain, North American Spine Society Neurogenic Symptoms, Oswestry Disability Index, SF-36 Physical Component Summary, and MCS. Satisfaction, expectation fulfilment, and return to work (RTW) rates also were recorded at 1 month, 3 months, 6 months, and 2 years. Preoperative MCS was 39.4 ± 8.6 and 58.5 ± 5.4 in the low and high MCS groups, respectively (<i>P</i> < .001). The low MCS group had significantly poorer preoperative PROMs and longer lengths of stay. Despite this, both groups achieved comparable PROMs from 3 months onward. The mean MCS was no longer significantly different by 3 months (<i>P</i> = .353). The low MCS group had poorer satisfaction (<i>P</i> = .022) and expectation fulfilment (<i>P</i> = .020) at final follow-up. RTW rates were initially lower in the low MCS group up to 3 months (<i>P</i> = .034), but the rates converged from 6 months onward. Despite poorer PROMs preoperatively, patients with poor baseline mental health still achieved comparable results from 3 months up to 2 years after MIS-TLIF. Preoperative optimization of mental health should still be pursued to improve satisfaction and prevent delayed RTW after surgery.