“This really brought a lot of folks to my office,” Dr. Troum recalled.
“Absolutely, this was big stuff,” Dr. Bergman agreed. “This became a nightmare for many of us because all of a sudden patients were scared to death about taking their NSAIDs.”
At last fall’s American College of Rheumatology meeting in San Francisco, Jeffrey B. Driban, Ph.D., of Tufts Medical Center, Boston, presented a double-blind, randomized trial of intra-articular injections of triamcinolone hexacetonide 40 mg versus saline quarterly for 2 years in 140 patients with symptomatic knee osteoarthritis with ultrasound evidence of synovitis. Participants underwent annual evaluation of periarticular bone and cartilage changes via MRI and dual-energy x-ray absorptiometry.
After 2 years, there was no difference between the two groups in terms of pain scores, walk time, or other functional measures. The injections – eight in total over 2 years – were safe, with new-onset hypertension and hyperglycemia rates of 3% in this obese population. And most important of all, there were no major differences between the two groups in terms of quantitative or semiquantitative structural endpoints; in other words, the injections didn’t increase the rate of structural disease progression. The intra-articular steroid group showed a modestly greater rate of loss of cartilage thickness, which the investigators deemed of uncertain clinical significance.
“The structural changes were minimal,” Dr. Troum noted. “This is only a 2-year study, but I can say that I now feel more comfortable giving these injections in patients who for whatever reason can’t get surgery.”
Dr. Bergman said that many orthopedic surgeons talk up the potential risk that intra-articular steroid injections will accelerate cartilage damage. They place an arbitrary limit on the number of injections a patient can receive.
“I think this study really helps us push back and say, ‘No, I think you’re fine in getting this procedure,’” the rheumatologist commented.
Dr. Bergman and Dr. Troum reported having no financial conflicts regarding their presentation.
bjancin@frontlinemedcom.com