Lumbar Spine Anatomy Diagram

L4 and L5 lumbar pain refers to discomfort originating from the fourth and fifth lumbar vertebrae, often caused by conditions such as disc herniation, spinal stenosis, or degenerative disc disease. This pain can radiate to the lower back, hips, and legs, sometimes accompanied by numbness or weakness.

The lumbar spine primarily controls the lower back, hips, and legs, but the nerves branching from this region also influence bladder, bowel, and reproductive organ functions. Proper lumbar spine health is essential for mobility and maintaining control over these bodily functions.

Lumbar spine problems can be caused by various factors, including age-related degeneration, traumatic injuries, poor posture, obesity, and repetitive strain from heavy lifting or improper body mechanics. Conditions such as herniated discs, spinal stenosis, and osteoarthritis are common contributors to lumbar spine issues.