What does moderate narrowing at L4-L5 mean?

Moderate narrowing at the L4-L5 level typically refers to a decrease in the space available in the spinal canal or between the vertebrae in that area, often due to conditions like disc degeneration, bone spurs, or herniated discs. This narrowing can lead to compression of nearby nerves, which may result in symptoms such as pain, numbness, or weakness in the lower back and legs. It's important to evaluate the severity and associated symptoms to determine the appropriate treatment options.