Objective: to develop standardized methods for performing diagnostic blockades increasing their effectiveness in lumbosacral ligamentoses. Material and methods. The study included the results of sonographically controlled blockades of the iliolumbar (66 patients), posterior long sacroiliac (126 patients), and sacrotuberal ligaments (25 patients). All of the patients had manifestations of low back pain syndrome. Results. The use of the standardized method of therapeutic and diagnostic blockades

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... n all the patients with ligament-induced low back pain syndrome led to a marked decrease in the intensity of the pain syndrome and allowed verification of its cause. Conclusion. Sonographically controlled blockade of the iliolumbar, posterior long sacroiliac, and sacrotuberal ligaments is an effective way to verify and treat low back pain syndrome in lumbosacral ligamentoses.