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Article type: Case Report
Authors: Shin, Dong Jaea | Lee, Yeon Soob; * | Choi, Eunseokc | Yi, Jin-Seokd
Affiliations: [a] Department of Rehabilitation Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea | [b] Department of Radiology, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Korea | [c] Department of Rehabilitation Medicine, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Korea | [d] Department of Neurosurgery, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Korea
Correspondence: [*] Corresponding author: Yeon Soo Lee, Department of Radiology, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 64 Daeheung-ro Jung-gu, Daejeon, 34943, Korea. E-mail: yslee1074@catholic.ac.kr.
Abstract: BACKGROUND: Spinal nerve root anomaly is a rare feature that can result in unexpected outcomes in epidural steroid injections or surgical procedures. Preoperative diagnostic tools for root anomalies are limited, as they are usually found intraoperatively. OBJECTIVE: This case report aims to propose an effective diagnostic process for nerve root anomalies by introducing clinical manifestations, electrodiagnostic findings, and sophisticated imaging techniques such as coronal view magnetic resonance imaging (MRI) of the lumbosacral spine. CASE DESCRIPTION: A 43-year-old female complained of low back pain with radicular pain to the lower extremities. Based on physical examination, electrodiagnosis, and imaging studies, right L5 radiculopathy was diagnosed. Repetitive image-guided epidural steroid injections presented unsuccessful outcomes. She was then referred to a neurosurgeon for surgical decompression, which resulted in significant improvement in her radicular pain. A nerve root anomaly was found intraoperatively, and the coronal images of postoperative MRI depicted the conjoined nerve root of the lumbar spine. CONCLUSION: When proper image-guided spinal interventions for discogenic radicular pain are not effective, a clinician should be advised to consider the possibility of anatomical variation, including nerve root anomalies. Early diagnosis of nerve root anomalies by utilizing multiple diagnostic tools, especially coronal MRI, can aid in preoperative diagnosis and proper clinical decisions for symptom management.
Keywords: Nerve root anomaly, conjoined nerve root, epidural injections, low back pain, radiculopathy
DOI: 10.3233/BMR-210226
Journal: Journal of Back and Musculoskeletal Rehabilitation, vol. 35, no. 5, pp. 971-976, 2022
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