Abstract
Chronic knee pain is a leading cause of chronic disability and its symptoms have a profound impact on the lives of those suffering from it. Current treatment modalities for chronic knee pain include pharmacologic and nonpharmacologic interventions. Genicular nerve blocks are a new therapeutic alternative that have been shown to relieve chronic knee pain and may provide significant relief in patients who are either poor surgical candidates or are unwilling to accept the risks associated with surgery. Genicular nerve blocks may provide long term pain relief for chronic knee pain and radiofrequency ablation (RFA) may not be necessary. This Institutional Review Board (IRB) approved retrospective study conducted at a single center university hospital involved 44 patients aged 43 to 87 who received genicular nerve blocks for chronic knee pain. The primary purpose of this study was to determine if genicular nerve blocks provide effective long term pain relief for patients with chronic knee pain. The numeric rating scale was used to measure the patient’s knee pain at baseline, 30, 90, and 120 days post procedure. Patients experienced a mean pain level of 7.43 out of 10 before the genicular nerve block and 4.02 afterward representing an average improvement of 42.6% in pain relief overall post procedure follow-up. A t-test revealed a statistically significant difference between the mean pain score before and after the blocks (t = 8.534, P < 0.01). Overall, the patients experienced significant pain relief of an average of 111.9 days resulting in an average of 42.6 percent pain relief post procedure follow-up. Out of the 44 patients, 15 (34.1%) underwent a RFA after receiving a genicular nerve block procedure to further manage their chronic knee pain symptoms. In conclusion, we have found statistically significant evidence that genicular nerve blocks provide effective long-term pain relief for patients with chronic knee pain. Therefore, for patients who are not surgical candidates, genicular nerve blocks represent a viable alternative treatment for knee pain. Key words: Genicular nerve blocks, chronic knee pain, genicular nerves, genicular nerve radiofrequency ablation
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