Albareeq 2015.

Trial name or title	Radiofrequency in sacroiliac arthropathy; bipolar RF 6 points vs monopolar RF at 6 and 3 points (RFSIBIMONO6)
Methods	Prospective, single‐centre, double‐blind, controlled randomised trial
Participants	Inclusion criteria Moderate to severe low back pain > 6 months with positive Patrick's and Yeoman's tests and tenderness over SI joint Pain not responding to usual medical treatment > 50% pain relief after diagnostic injection with local anaesthetic Exclusion criteria Patient refusal to do the procedure or to share in the study Focal neurological signs Significant anticoagulation, e.g. clopidogrel (low‐dose aspirin excluded) Pregnancy, breast feeding or planning on becoming pregnant during trial Infection at intended injection site
Interventions	Group 1: Six RF needles will be put between SIJ and lateral aspects of ipsilateral dorsal sacral foramina. After sensory and motor stimulation, bipolar lesion RF at 80°C for 90 seconds will be applied between successive pairs of needles Group 2: RF needle will be inserted at 6 levels in the area between SI joint and lateral aspects of ipsilateral dorsal sacral foramina. After sensory and motor stimulation, monopolar lesion RF at 80°C will be applied for 90 seconds Group 3: RF needle will be inserted at 6 levels in the upper, middle and lower parts of the area between the SIJ and lateral aspects of ipsilateral dorsal sacral foramina. After sensory and motor stimulation, monopolar lesion RF will be applied at 80°C for 90 seconds
Outcomes	Visual analogue pain scale after 2 weeks, 1 month, 3 months and 6 months
Starting date	September 2014
Contact information	ClinicalTrials.gov identifier: NCT02382289
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