Key features: * Provides a clear explanation for many of the pain generators in low back pain and illuminate this perplexing and ubiquitous problem. * Addresses a gap in the existing literature, as non-specific or mechanical lumbosacral spine pain accounts for by far most chronic spinal pain sufferers’ complaints for clinicians dealing with spinal pain syndromes like general medical practitioners, and spinal specialists in various fields such as sports medicine. * Illustrates anatomical structures that can be injured and thus become responsible for causing mechanical lumbosacral spine pain, frequently, such injuries cannot be detected on sophisticated imaging such as MRI.