Clinical Effect of The Lumbar Facet Joint Arthrography and Injection for Facet Joint Syndrome

Abstract

clinical application of this treatment. Objectives: This study was designed to assess the diagnostic value and clinical benefits of lumbar facet joint arthrogram & injection of long acting steriod and local anesthetics in patients with facet joint syndrome. Summary of Literature Review: The radiological relationship and the diagnostic elements of facet joint syndrome need to be analyzed and evaluated for increasing the effectiveness of lumbar injection. Materials and Methods: Fifty two patients with low back pain were enrolled in the trial and they met the following criteria: pain for more than 3 months, no root signs and no history of back surgery. The response to facet joint injection was analyzed according to the chief complaints, a provocative test, the Visual Analogue Scale(VAS), the Helbig & Lee(HL) score, the facet block procedure and the arthrogram findings. A questionnaire with a pain scale was administered immediately or the day after injection, and then after 1, 3, 6 and 12 weeks. The arthrograms were reviewed by a radiologist & orthopedic specialist. Results: One hundred sixty nine joint injections were performed in 52 patients (L 3-4, n=33; L4-5, n=64; L5-S1, n=72). Thirty one patients had a chief complain of back pain that was aggravated by extension/rotation of the trunk and the provocative test was positive in 73.1%. The rates of a good response in the study group were 69.2% after one day, 44.2% after 3 weeks and 36.5% after 12 months. Arthrograms revealed synovial cysts in 1 of these patients and 5 patients had abnormal communication with spondylolysis. Two patients had contrast extravasated into the epidural space during injection. Conclusions: Lumbar arthrography showed a low diagnostic value. Lumbar injections, as a useful procedure to diagnosis facet joint syndrome, could be a useful palliative treatment modality for treating chronic lower back pain. But strict diagnostic criteria through a scoring system is needed to achieve a higher degree of predictability and effectiveness of facet joint injection