Intra-articular Triamcinolone Versus Hyaluronate Injections for Low Back Pain With Symptoms Suggestive of Lumbar Zygapophyseal Joint Arthropathy: A Pragmatic, Double-Blind Randomized Controlled Trial

Objective The aim of the study was to compare hyaluronate with triamcinolone injections in treating chronic low back pain suggestive of lumbar zygopophyseal joint arthropathy. Design This was a prospective, double-blind, randomized controlled trial. Thirty subjects were randomly assigned to receive bilateral L3-S1 lumbar zygopophyseal joint injections with triamcinolone (KA) or Synvisc-One (HA). Pain (visual analog scale) and Pain Disability Questionnaire scores at 1, 3, and 6 mos were evaluated. Results No significant intergroup differences (P > 0.05) in outcomes were noted in the 30 recruited subjects. For KA/HA (baseline; 1 mo; 3 mos; 6 mos), visual analog scale scores were the following: 70 (15)/74 (10); 58 (29)/45 (25); 58 (29)/56 (25); and 59 (28)/63 (24), respectively. Pain Disability Questionnaire scores were the following: 100 (23)/102 (28); 77 (30)/74 (34); 87 (26)/74 (36); and 96 (25)/79 (25). Overall percent improvement at 6 mos for KA was 51 (35) and for HA was 42 (33) (P = 0.51). Synvisc-One group visual analog scale scores improved significantly (70 [20]–45 [25] at 1 mo, P = 0.008). Pain Disability Questionnaire scores improved at 1 mo (100 [23]–77 [30], P = 0.009) in the KA group and at all time points in the HA group (102 [28]–74 [34] at 1 mo, P = 0.002; 74 [36] at 3 mos, P = 0.037; 79 at 6 mos [median = 52–99.5], P

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