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  • Title: Efficacy of Methylprednisolone Acetate Versus Triamcinolone Acetonide Intra-articular Knee Injection in Patients With Chronic Inflammatory Arthritis: A 24-Week Randomized Controlled Trial.
    Author: Kumar A, Dhir V, Sharma S, Sharma A, Singh S.
    Journal: Clin Ther; 2017 Jan; 39(1):150-158. PubMed ID: 28012569.
    Abstract:
    PURPOSE: Triamcinolone hexacetonide (TH), triamcinolone acetonide (TA), and methylprednisolone acetate (MPA) are commonly used intra-articular steroid preparations. Studies suggest that intra-articular TH is more efficacious than MPA and TA in chronic inflammatory arthritis. However, it is unclear which of the latter two preparations has better efficacy. Thus, we compared intra-articular knee injections of MPA and TA in patients with chronic inflammatory arthritis. METHODS: This double-blind, randomized controlled trial included patients with rheumatoid arthritis or spondyloarthritis with an acutely swollen knee joint (≥1 week, <24 weeks). They were randomly assigned (1:1) to intra-articular knee injection with MPA or TA (80 mg, 2 mL of each). Evaluations were performed at 4, 12, and 24 weeks. Primary outcome was time to relapse (Kaplan-Meier) over 24 weeks, with relapse defined as return to baseline pain or swelling ≥1 week. Secondary outcomes were change in pain and swelling (using a numerical rating scale), range of movement, and occurrence of adverse effects. Primary analysis was intention to treat, with last observation carried forward. FINDINGS: One hundred patients (89 with rheumatoid arthritis) were randomly assigned in equal numbers to the MPA and TA groups. Nine patients relapsed in each group over 24 weeks. The mean time to relapse was not significantly different between the MPA and TA groups (20.8 [95% CI, 18.8-22.7] weeks and 20.9 [95% CI, 19.0-22.8] weeks, respectively; P = 0.9; hazard ratio = 1.0 [95% CI, 0.4-2.5]). In both groups, there was a significant decline in pain and swelling scores at all visits (P < 0.001); however, there were no significant intergroup differences. At 24 weeks, mean change in pain in the MPA (-4.4 [3.1]) and TA groups (-3.9 [2.8]) was not significantly different (P = 0.46). No infection, hematoma or hypopigmentation occurred in any patient. In addition, no significant intergroup differences were found in joint swelling, range of movement, modified (28 joint) Disease Activity Score using 3 variables, or Health Assessment Questionnaire over 24 weeks. IMPLICATIONS: No significant differences were found in efficacy between intra-articular knee injections with MPA and TA in these patients with chronic inflammatory arthritis. However, results need to be extrapolated cautiously because of the small sample size. Three-quarters of the patients remained relapse free at 24 weeks. Clinical Trials Registry of India (www.ctri.nic.in) identifier: CTRI/2015/09/006187.
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