Chronic Pain Management
Correlation between Preoperative Pain Duration and Percutaneous Vertebroplasty Outcome
Ehteshami Rad A, Kallmes DF (Mayo Clinic, Rochester, MN) AJNR Am J Neuroradiol 32:1842-1845, 2011§
Background and Purpose
The duration of the fracture is considered by many practitioners to be an important predictor of outcome following vertebroplasty. We sought to define the impact of preprocedural pain duration on outcomes, including pain relief, improvement in function, and medication usage among patients treated with single-level vertebroplasty.
Materials and Methods
Institutional review board approval was obtained before conducting this retrospective analysis of 321 patients undergoing single-level vertebroplasty at our institution. Fractures were categorized as acute (≤6 weeks, n = 153), subacute (6–24 weeks, n = 124), and chronic (>24 weeks, n = 44). Pain NRS (0–10) scores at rest and with activity and RDS were compared among 3 groups at baseline and post-procedure. Also absolute and proportional improvement of pain NRS and RDS were compared among 3 groups by using ANOVA. Linear regression was performed between preoperative pain duration and symptom improvement for each group.