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. 2024 Oct;33(10):3978-3984.
doi: 10.1007/s00586-024-08392-6. Epub 2024 Sep 2.

The influence of preoperative 12-item veterans rand physical component scores on outcomes following cervical disc replacement

Fatima N Anwar  1 , Andrea M Roca  1 , Jacob C Wolf  2 , Alexandra C Loya  1 , Srinath S Medakkar  1 , Vincent P Federico  1 , Kern Singh  3
Affiliations

The influence of preoperative 12-item veterans rand physical component scores on outcomes following cervical disc replacement

Fatima N Anwar et al. Eur Spine J. 2024 Oct.

Abstract

Purpose: To evaluate the influence of preoperative VR-12 physical component scores (PCS) on outcomes following cervical disc replacement (CDR).

Methods: Patients undergoing elective CDR were retrospectively identified. Patient-reported outcomes (PROs) of interest included VR-12 PCS/VR-12 Mental Component Score (MCS)/9-Item Patient Health Questionnaire (PHQ-9)/Short Form-12 (SF-12) PCS and MCS/Patient-Reported Outcome Measurement Information System-Physical Function (PROMIS-PF)/Visual Analog Scale-Neck Pain (VAS-NP)/VAS-Arm Pain (VAS-AP)/Neck Disability Index (NDI). Baseline up to two-year postoperative scores were obtained (average follow-up: 9.2 ± 6.8months). Two cohorts were created: VR-12 PCS < 35 or VR-12 PCS ≥ 35. Improvements in scores from baseline to six weeks postoperatively and to final follow-up were calculated. Changes in scores were compared to previously reported thresholds to determine rates of minimum clinically important difference (MCID).

Results: Of 127 patients, 64 were in the worse VR-12 PCS group. Patients with better VR-12 PCS were more likely to have private insurance (p = 0.034). When accounting for insurance differences, the worse VR-12 PCS group reported inferior NDI/VAS-NP/PHQ-9/PROMIS-PF/VR-12 PCS/SF-12 PCS at six weeks and final follow-up (p ≤ 0.015, all). The worse VR-12 PCS group reported greater improvements in VAS-AP and VR-12 PCS by six weeks and in NDI/VR-12 MCS/VR-12 PCS/SF-12 PCS by final follow-up (p ≤ 0.026, all). Patients with worse VR-12 PCS reported greater MCID achievement for VR-12 MCS and SF-12 PCS (p ≤ 0.034, both).

Conclusion: Following surgery, patients with worse VR-12 PCS report greater improvements in PROs, highlighting the increased relative impact of surgery for patients with worse baseline physical function. These findings can be used to optimize patient experience perioperatively and inform postoperative expectations.

Keywords: Cervical disc replacement; Patient-reported outcomes; Physical function; VR-12 PCS.

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