Therapeutic Potentials of Bilateral Sacroiliac Joint Injection in Lumbar Disc Prolapse: a Prospective Study

86 Patients with lumbar disc prolapse diagnosed by either MRI or CT will be included. All of them aged > 18 years with no special condition for the duration of disc prolapse. All of them had clinical manifestations in the form of mechanical low back pain or sciatica or limited spine mobility. All participants had no or poor response to conservative treatment. Previous surgery, severe facet arthropathy, ankylosing spondylitis, sensory or motor deficit and wedge fracture were considered as exclusion criteria. Distraction, compression, thigh thrust, and sacral thrust were used to assess SIJ dysfunction only at baseline before injection. Fingertip to floor and Oswestry disability index (ODI) were used to assess mobility and function of the spine at baseline (before and after injection) and after 2 and 16 weeks. Visual Analogue Scale (VAS) was used for pain appraisal at the same intervals. Participants will be randomly assigned into active and control group using 1:1 allocation. In the active group bilateral SIJ injection will be performed under ultrasound US guidance. Under US guidance a 22G spinal needle, where 1 mL 2 % lidocaine hydrochloride (xylocaine, AstraZeneca) mixed with triamcinolone 40 milligrams (Kenacort, Bristol Myers Squip) will be injected in each SIJ.