Cooled radiofrequency ablation may relieve knee pain better
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Patients treated for osteoarthritis-related knee pain with cooled radiofrequency ablation saw greater improvements in pain relief and knee function compared with patients treated with a single injection of hyaluronic acid, according to a recent study. According to the study report, outcome measures included the Numeric Rating Scale (NRS) pain score, Western Ontario, and McMaster Universities (WOMAC) osteoarthritis index, quality of life, and safety. Researchers made evaluations at 1-, 3- and 6-months after treatment.

Of the 158 patients who completed the 6-month follow-up, 76 received treatment with CRFA, and 87 received treatment with a single injection of hyaluronic acid (HA).

With a mean NRS score reduction of 4.1, 71% of the CRFA group saw a 50% or greater reduction in NRS pain score, while 38% of the HA group saw a 50% or greater reduction in NRS pain score, a mean NRS score reduction of 2.5.

Additionally, the mean WOMAC osteoarthritis index improved 68% from baseline in the CRFA group compared with 22.6% in the HA group, and quality of life scores improved in 72% of the CRFA group and 40% of the HA group. Investigators reported no adverse events associated with either treatment method.

Source: https://www.healio.com/news/orthopedics/20200908/cooled-radiofrequency-ablation-may-relieve-knee-pain-better-than-hyaluronic-acid
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