Common Peroneal Nerve Entrapment Masked by Acute Lumbar Disc Herniation: Integrated Korean Medicine Treatment with Ultrasound-Guided Pharmacopuncture

Abstract

The symptoms of common peroneal nerve (CPN) entrapment are similar to the symptoms of lumbar herniated intervertebral disc. We present the successful treatment of CPN entrapment masked by acute lumbar disc herniation. A 49-year-old man presented with low back pain and numbness in his left leg. Following admission, patient history, physical examination, and radiology findings, the patient received integrated Korean medicine (KM) treatment (acupuncture, pharmacopuncture, ultrasound-guided pharmacopuncture, moxibustion and cupping, herbal medicine, and chuna therapy) for lumbar disc herniation. Outcome measures included the numeric rating scale, the European quality of life five dimensions, and the Oswestry disability index. Symptoms persisted, and CPN compression was consequently suspected. On Day 12 of 23, in addition to KM treatment, an ultrasound-guided Shinbaro2 pharmacopuncture (4 mL) was performed on the CPN entrapment site. Significant symptom relief resulted after CPN treatment on Day 12. Improvement was particularly evident in the lower leg and ankle, areas where the pain had previously been misattributed to symptoms of lumbar disc herniation. His low back pain and radiating pain to the back of the left femur started to improve from Day 20 and were mild at discharge. This case highlights the importance of considering peripheral nerve entrapment in patients presenting with symptoms similar to lumbar disc herniation. It also suggests that combining traditional KM with modern diagnostic techniques such as ultrasonography, may be beneficial in the precise location for pharmacopuncture treatment. Further studies are recommended to validate these findings and explore the broader applicability of this approach.