Comparison of Diagnostic and Therapeutic Efficacy of Periarticular and/or Intraarticular Lidocaine Injections Under Ultrasound Guidance in Sacroiliac Joint Dysfunction

The sacroiliac joint (SIJ) is a joint with unique features, including both hyaline and fibrocartilage, and a discontinuous posterior capsule that enhances stability while minimizing movement. Its innervation is complex and has been a subject of debate, with various studies suggesting that it may be supplied by branches from the lumbosacral plexus, dorsal rami of S1 and S2, and the superior gluteal nerve. Recent studies have confirmed the presence of sensory nerve fibers within the joint capsule and ligaments, indicating that the SI joint is involved in pain and proprioception. Various injury mechanisms, including falls, motor vehicle accidents, and conditions like spondylolisthesis, can lead to SIJ pain. Diagnosis of sacroiliac joint pain involves physical tests, such as the thigh thrust test and compression test, while imaging techniques like scintigraphy have limited value. Provocation tests, particularly when combined, can help identify the source of pain. The primary aim of this study is to evaluate diagnostic interventions for SI joint dysfunction, while secondary aims focus on assessing factors that may affect the quality and generalizability of research on this topic.