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Spine (Phila Pa 1976). 2019 Sep 6. doi: 10.1097/BRS.0000000000003236. [Epub ahead of print]

The Influence of Preoperative Mental Health on PROMIS Physical Function Outcomes Following Minimally Invasive Transforaminal Lumbar Interbody Fusion.

Author information

1
Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL, 60612.

Abstract

STUDY DESIGN:

Retrospective OBJECTIVE.: To demonstrate whether preoperative mental health status can be predictive of postoperative functional outcomes as measured by Patient-Reported Outcome Measurement Information System Physical Function (PROMIS PF) following minimally invasive transforaminal lumbar interbody fusion (MIS TLIF).

SUMMARY OF BACKGROUND DATA:

There is a paucity of scientific investigations into the association between preoperative mental health as evaluated by a validated questionnaire such as the Short Form-12 Mental Health Composite Score (SF-12 MCS) and postoperative outcomes following MIS TLIF.

METHODS:

Patients undergoing a primary MIS TLIF were retrospectively reviewed and stratified into cohorts based on preoperative SF-12 MCS scores. The Physical Function scores of PROMIS, of which there are other domains including Pain Interference, Sexual Function, and Cognitive Function, were compared between the cohorts. In addition, the improvement in PROMIS scores based on preoperative SF-12 MCS scores following MIS TLIF were analyzed using multivariate linear regression.

RESULTS:

172 patients were included: 85 patients (49.4%) had a preoperative SF-12 MCS score <50, and 87 (50.6%) had a preoperative SF-12 MCS score ≥50. Patients with poorer mental health demonstrated significantly worse PROMIS PF scores preoperatively (33.8 vs. 36.5, p < 0.001), as well as at all postoperative timepoints: 6-weeks (35.1 vs. 38.4, p < 0.001), 3-months (38.9 vs. 42.9, p < 0.001), 6-months (41.4 vs. 45.5, p < 0.001), and 1-year (42.4 vs. 47.6, p < 0.001). However, at the 1-year timepoint, patients with worse mental health reported experiencing significantly less improvement from baseline (postoperative change of 8.6 vs. 11.1, p = 0.002).

CONCLUSION:

Patients with worse preoperative mental health not only demonstrated worse preoperative PROMIS PF scores, but also continued to have significantly worse postoperative outcomes. However, the postoperative improvement experienced by patients was similar in the short-term following surgery regardless of preoperative mental health status. Patients with poor mental health experienced significantly less postoperative improvement only at the 1-year timepoint.

LEVEL OF EVIDENCE:

3.

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