• Sei Fukui, Narihito Iwashita, Kazuhito Nitta, Hisashi Tomie, and Shuichi Nosaka.
• Pain Management Clinic, Department of Anesthesiology, Shiga University of Medical Science Hospital, Otsu, Shiga, Japan. sei@belle.shiga-med.ac.jp
• Pain Med. 2012 Jun 1;13(6):762-8.

ObjectivesIntradiscal high-pressure injection of saline (IDHP) is a noninvasive procedure for a lumbar intervertebral disc extrusion and an alternative treatment to surgery, such as microendoscopic discectomy (MED). The purpose of this study was to compare the representative outcomes of IDHP with MED in terms of pain relief, reduction of disability, and risk of complications.MethodsForty-five patients with primarily radicular pain due to an extrusion type disc herniation who underwent either IDHP (N = 24) or MED (N = 21) were enrolled in the study. The visual analog pain scale (VAS) and the Japanese Orthopedic Association (JOA) scoring system for the treatment of low-back disorders were assessed at pretreatment, 2 weeks posttreatment, and JOA was again taken 3 months posttreatment. Patients were asked to choose their satisfaction from four alternatives, "excellent,"good,"fair," and "poor," 3 months after treatment.ResultsMean VAS decreased from 65.1 to 18.8 mm in the IDHP group, and from 80.6 to 16.5 in the MED group. Mean JOA recovery rates at 3 months posttreatment were 67.2 and 75.2, and patients with "excellent" or "good" results were 73.7% and 78.6% in the IDHP and in MED, respectively.ConclusionsIDHP produced significant effects on patients with radicular pain, leading to the improvement of VAS and JOA. Although IDHP displayed slightly less efficacy than MED, IDHP appears to be an alternative as a nonoperative treatment for a lumbar intervertebral disc extrusion.Wiley Periodicals, Inc.

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