The lumbar plexus is a nerve plexus (a network of intersecting nerves) in the body’s lumbar region. It is formed by the ventral branches of the first to the fourth upper lumbar nerves (L1-L4), with ...

Herniated nucleus pulposus (HNP), also referred to as a herniated disc, is a common spine pathology that occurs approximately 95% of the time at the L4-L5 or L5-S1 level (Fisher et al., 2004; Asch et ...

A pinched nerve can be very painful—no matter where it’s located in your body. If you experience one in your back, it can travel to other parts of the body and cause sharp pain, tingling, numbness, or ...

A 32 year-old man presented with progressive numbness and pain radiating from the back to the anterior and medial thigh. Schwannoma: MRI Scans of the Lumbar Spine; (Left Top) T1-weighted axial; (Left ...