What is the name of the lower back condition injury that involves a narrowing of the spinal canal?

The condition described in the question relates specifically to stenosis, which is characterized by the narrowing of the spinal canal. This narrowing can lead to increased pressure on the spinal cord and nerve roots, potentially causing pain, numbness, or weakness, particularly in the lower back and legs.

Stenosis can occur due to various factors, such as aging, arthritis, or congenital conditions. It often affects individuals as they age, leading to symptoms that can significantly impact mobility and quality of life.

For clarity, herniated discs involve the displacement of disc material which can compress nerves but are distinct from canal narrowing; spondylosis refers to degenerative changes in the spine without necessarily implying a narrow canal; and sciatica describes pain along the sciatic nerve, which can be a symptom of various underlying conditions, including stenosis, but is not a condition that specifically denotes canal narrowing itself.