Table 2.

Overview of possible diagnoses in the algorithm

Buttock	Lumbar spine	Thoracic spine	Cervical spine	Whole spine
Iliosacral joint block Sacroilitis	Ankylosing spondylitis Facet joint arthritis Herniated disc Low back pain Spondylodiscitis Osteoporotic vertebra fracture Spinal stenosis Spondylolisthesis	Ankylosing spondylitis Osteoporotic vertebra fracture Spondylodiscitis Thoracic block	Cervicocephalic syndrome Herniated disc Myelogelosis Spinal stenosis	Fibromyalgia Psychologically induced back pain