Vertebrogenic ilio-lumbar syndrome (Ilio-lumbar muscle syndrome)

It has been established that pathological tension of the lumbosacral muscle constantly accompanies violations of the function of the thoracic spine due to organic diseases of the internal organs with lumbalgia, coccalgia and coccygodynia [3], as well as in connection with orthostatic ilio-lumbar spasm [2]. However, the clinical features and pathogenesis of this syndrome remain insufficiently studied. The iliopsoas muscle is formed from the junction of the large lumbar (ch. psoas major) and iliac (m. iliacus) muscles. The large lumbar muscle is located on the posterior abdominal wall on the sides of the spine. It originates from the transverse processes of all lumbar vertebrae, from the lateral surface of the bodies of the last thoracic and all lumbar vertebrae and from the lateral surface of the intervertebral discs of the corresponding vertebrae. To understand the function of the muscle, it is important to take into account that in its upper parts it begins from the posterior surfaces of the vertebral bodies, with the reduction of these parts of it, lumbar lordosis increases. The reduction of the bulk of the bundles attached to the anterior and lateral surfaces of the vertebral bodies provides kyphosis [1].