Spinal Canal Narrowing (Cervical Stenosis)

Cervical stenosis is narrowing of the spinal canal in your neck, to the point where the spinal cord or the nerve roots branching off it get squeezed. Most cases build up gradually over decades from age-related changes (the discs thin out, the joints enlarge, bony spurs form, the ligaments inside the canal thicken). Some people are born with naturally narrow canals, which puts them at higher risk earlier.

When only the canal is narrow but the cord itself isn't being squeezed, you may have no symptoms at all for years. When the cord itself is being compressed, a condition called cervical myelopathy, symptoms include clumsy hands (dropping things, struggling with buttons), unsteady walking, and in severe cases problems with bladder or bowel control.

The tricky thing about cervical stenosis is that many people have a narrow canal and don't know it, the cord has enough room to function normally, and there are no symptoms at all. When the narrowing progresses far enough to compress the spinal cord (a condition called cervical myelopathy), the signs tend to creep in gradually and can be easy to dismiss. Your hands may feel clumsy, you fumble with buttons, have trouble texting, or keep dropping things. Your handwriting may get noticeably worse.

Walking often changes next: you feel unsteady on your feet, especially in the dark or on uneven ground, and may find yourself holding onto railings you never used to need. Some people notice a heavy or stiff feeling in their legs, or that their feet seem to "stick" to the floor. In advanced cases, bladder urgency or difficulty with bowel control can develop, those are signs that the cord compression is severe and needs urgent evaluation. If only nerve roots (not the cord) are being squeezed, the pattern looks more like cervical radiculopathy, pain, numbness, or weakness in one arm.

MRI is the definitive test, it shows exactly how narrow the canal is and whether the cord itself is being changed by the pressure. A CT myelogram (a CT scan with contrast injected around the cord) is used when you can't have an MRI, or when bone detail matters most for planning surgery. Your surgeon will also rate how much the cord compression is affecting your hands, walking, and daily function, and track that over time.

For mild stenosis without cord compression, care starts with a structured non-operative plan. The measures below are introduced in the order we usually try them, each one added on top of the ones before, not instead of.

Surgery helps only a small minority of spine patients, usually those with a specific structural problem plus a nerve issue that isn’t getting better with a structured non-operative trial. When that step is genuinely warranted, it falls outside the care OSI provides, so we refer you to a spine surgeon. OSI does not perform or coordinate spine surgery; your non-operative care stays with us.

Emergency. Sudden loss of hand dexterity, worsening balance, arm or leg weakness, or loss of bladder or bowel control can reflect spinal-cord compression, go to the nearest emergency department rather than waiting for a clinic appointment.

External patient-education references and related OSI pages for additional background:

• AAOS OrthoInfo, patient education library
• OSI glossary, orthopedic terminology in plain language