Impact of Time to Surgery for Patients Using Workers' Compensation Insurance Undergoing Minimally Invasive Transforaminal Lumbar Interbody Fusion: A Preliminary Analysis of Clinical Outcomes.

Objective: To conduct a preliminary analysis on the impact of time to surgery (TTS) and duration of symptoms (DOS) on clinical outcomes in workers' compensation patients undergoing minimally invasive transforaminal lumbar interbody fusion (MIS TLIF).

Methods: Patients using workers' compensation insurance undergoing primary, single-level MIS TLIF were identified. Patient-reported outcome measures (PROMs) were administered at preoperative/6-week/12-week/6-month postoperative time points and included visual analog scale (VAS) back/VAS leg/Oswestry Disability Index/12-Item Short-Form Physical Composite Score/12-Item Short-Form Mental Composite Score.

Influence of Preoperative 12-Item Short Form Mental Composite Score on Clinical Outcomes in an Isthmic Spondylolisthesis Population Undergoing Minimally Invasive Transforaminal Lumbar Interbody Fusion.

Objective: To determine preoperative 12-Item Short Form Health Survey (SF-12) Mental Component Summary (MCS) influence on minimally important clinical difference (MCID) and patient-reported outcome measures in patients with isthmic spondylolisthesis receiving minimally invasive transforaminal lumbar interbody fusion.

Methods: Patients with isthmic spondylolisthesis undergoing primary, single-level minimally invasive transforaminal lumbar interbody fusion at L5-S1 were retrospectively identified and divided into preoperative SF-12 MCS <50 and SF-12 MCS ≥50 groups. Visual analog scale (VAS) back/leg, Oswestry Disability Index (ODI), SF-12 Physical Composite Score (PCS), and Patient-Reported Outcome Measurement Information System physical function (PROMIS-PF) were assessed.