• Pain physician · Mar 2021

    Randomized Controlled Trial Comparative Study

    Comparative Effectiveness of Parasagittal Interlaminar and Transforaminal Cervical Epidural Steroid Injection in Patients with Cervical Radicular Pain: A Randomized Clinical Trial.

    • Ji Hoon Sim, Han Park, Yujin Kim, Jin-Woo Shin, Jeong-Gil Leem, Hyun-Seok Cho, and Seong-Soo Choi.
    • Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
    • Pain Physician. 2021 Mar 1; 24 (2): 117-125.

    BackgroundCervical epidural steroid injections (ESI) are performed either by interlaminar (IL) or transforaminal (TF) approaches; however, there is controversy over which is better for safety and efficacy.ObjectivesThis clinical trial aimed to compare the effectiveness of the parasagittal IL and TF approaches for cervical ESI in patients who were suffering from cervical radicular pain.Study DesignA prospective randomized assessor-blind study.SettingThe study took place at a single pain clinic within a tertiary medical center in Seoul, Republic of Korea.MethodsThis prospective randomized, assessor-blind trial included 80 patients with cervical radicular pain. We randomly assigned patients to the TF or parasagittal IL approach for cervical ESI. The effectiveness of the 2 groups was compared based on pain intensity using the Numeric Rating Scale (NRS-11) at 1 and 3 months. The Neck Disability Index (NDI), Medication Quantification Scale (MQS), and responders at 1 and 3 months between the 2 groups were compared.ResultsThe pain intensity of both groups significantly reduced after 1 and 3 months after each procedure (P < 0.001). Two-way repeated measures of analysis of variance showed no significant interaction between group and time for cervical radicular pain (P = 0.266), although NRS-11 pain score was lower in the TF group than the parasagittal IL group after 1 month (P = 0.010). NDI, MQS, and successful responders were not different between the 2 groups at 1 and 3 months after the procedure. We observed 7 cases (18.4%) of vascular visualization in the TF group, although no serious complications were found in either group.LimitationsThis study had no placebo control group and limited follow-up time.ConclusionsParasagittal IL ESI may be recommended over the TF ESI in reducing cervical radicular pain, considering both clinical effectiveness and safety.

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