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Case Reports
Genitofemoral peripheral nerve stimulator implantation for refractory groin pain: a case report.
- Elad Dana, Himanshu Gupta, Rahul Pathak, and James S Khan.
- Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada. eladdana@gmail.com.
- Can J Anaesth. 2023 Jan 1; 70 (1): 163168163-168.
PurposeGenitofemoral neuralgia (GFN) is a chronic pain condition that may be refractory to commonly employed treatment modalities. Implantation of a peripheral nerve stimulator (PNS) may provide significant pain relief; however, few reports have described placement of and response to a GFN PNS implant.Clinical FeaturesWe implanted a StimRouter® PNS in a 42-yr-old male with severe GFN that did not respond to pharmacologic and interventional pain management modalities and impaired all aspects of his function and quality of life. The often-challenging sonographic visualization of the genitofemoral nerve was aided by intraprocedural sensory mapping using a stimulating probe. Preoperatively, the patient's average pain was rated as 7 on a 0 to 10 numeric rating scale. Following the procedure, the patient experienced over 90% pain relief after one week. At one and five months post implantation, the patient's average pain scores were 1 and 0.5, respectively. The patient also reported substantial improvement in the physical component scores on the 12-Item Short Form Survey (SF-12), which remained similar at the five-month follow-up (from 26.1 preop to 57.2 at one month and 49.7 at five months).ConclusionsPeripheral nerve stimulator implantation may be a promising intervention when other analgesic modalities fail to manage refractory GFN. Further research to verify the effectiveness of this intervention and evaluate for appropriate integration in patient care is required.© 2022. Canadian Anesthesiologists' Society.
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