The L2-L4 spinal segments are part of the lumbar region of the spine, located in the lower back. These segments consist of the second, third, and fourth lumbar vertebrae, which are numbered L2, L3, and L4. They play a crucial role in supporting the upper body and allowing for movement, such as bending and twisting. These spinal segments also house important nerves that branch out to the lower limbs and pelvic region. The lumbar plexus, formed by these nerves, is responsible for motor and sensory functions in the legs, making the L2-L4 segments vital for mobility and coordination.