Cervical myelopathy, unlike conditions such as a cervical herniated disc that compresses a nerve root on one side, involves compression of the spinal cord itself and can lead to reduced hand function and gait disturbance. Changes in everyday functions—such as buttoning a shirt, opening a bottle cap, writing, and walking—are key warning signs that can determine the right timing for treatment.
The Story of Ms. A: When the Problem Isn't in the Hand
Ms. A, a woman in her 70s living in Busan, noticed a sudden, frustrating change in her morning routine. Buttoning her shirt had become agonizingly slow, and she repeatedly missed the buttonhole. Twisting open bottle caps was no longer as easy as it once was, and she occasionally felt a persistent tingling in her fingertips.
Seeking help, she visited several clinics. One suspected carpal tunnel syndrome, while another suggested a cervical herniated disc. A third hospital even mentioned ossification of the posterior longitudinal ligament (OPLL). The conflicting diagnoses left her confused, but the underlying issue remained unaddressed.
Spinal Cord Compression: The Central Highway Under Pressure
A spine specialist finally ordered an MRI and CT scan, revealing that the problem wasn't in her hands at all. "The spinal canal inside your cervical vertebrae has narrowed due to multiple degenerative changes," the specialist explained. The spinal cord passing through her neck was being compressed.
Ms. A was diagnosed with Degenerative Cervical Myelopathy (DCM), caused by a combination of disc protrusion and ligament changes. While the previous mentions of "cervical disc disease" or "OPLL" weren't entirely wrong, they failed to capture the full picture of the central nervous system being squeezed.
"While a herniated disc often causes arm pain by pressing a single nerve root, cervical myelopathy is a condition where the spinal cord—the central nervous system connected to the brain—is compressed," explains Dr. Jong-cheol Jeong, Director of Busan Big Hospital. "It can lead to reduced hand function, gait disturbance, and in severe cases, an inability to maintain balance or even quadriplegia."
The Great Mimicker: Why Diagnosis Is Often Delayed
Cervical myelopathy is notoriously difficult to identify because its initial symptoms are ambiguous. If neck pain is not severe, both patients and doctors often assume it is a different condition. It easily overlaps with other issues common in seniors:
Hand tingling is often mistaken for carpal tunnel syndrome.
Arm pain is frequently dismissed as a shoulder issue or a simple disc problem.
Unsteady walking is often blamed on low-back issues or general aging.
A recent meta-analysis reported that it can take, on average, more than a year from the onset of symptoms to reach a diagnosis. Dr. Jeong compares it to a wire: "Just as repeatedly bending a wire causes the copper strands inside to break one by one, the spinal cord can be damaged little by little. Because the pain may not be severe in older adults, many hidden patients realize the danger far too late."
Functional Change: The Key to Diagnosis
In diagnosing cervical myelopathy, the most important question is not "where it hurts," but "what have you become unable to do?" Warning signs include:
Difficulty buttoning shirts or using chopsticks.
Trouble twisting open bottle caps.
Handwriting becoming significantly more crooked or slow.
Swaying while walking or a newfound fear of stairs and frequent falls.
While CT scans are used to confirm bony lesions like OPLL, MRI is the decisive tool for evaluating disc health, ligament thickening, and internal signal changes within the spinal cord.
Surgery vs. Non-Surgical Care
International guidelines consistently recommend surgery for moderate to severe cases. For mild cases, doctors may choose between surgery and structured rehabilitation. However, experts agree that one must not miss the signs of declining neurological function.
"At the early stage of pain or sensory changes, medication and lifestyle management can lead to a good course," says Dr. Jeong. "But if fine hand movements decline or gait becomes unstable, you must seriously consider surgery."
Because every patient’s anatomy is different, surgical approaches vary. Depending on the direction and level of compression, a surgeon may approach from the front or the back. Recently, endoscopic spine surgery has become more common, using smaller incisions to reduce pain and allow for faster rehabilitation.
Frequently Asked Questions (FAQ)
Q: Can it be cervical myelopathy if my neck doesn’t hurt much? A: Yes. Functional changes like clumsy hands and gait instability often appear long before severe neck pain.
Q: How do I tell the difference between carpal tunnel syndrome and cervical myelopathy? A: Carpal tunnel centers on hand tingling; myelopathy involves clumsiness in both hands, dropping objects, and a loss of balance.
Q: What happens if I delay surgery for cervical myelopathy? A: The longer the spinal cord remains compressed, the slower and less certain the recovery. If hand or leg function is clearly declining, surgery should not be delayed.
Expert Commentary: Jong-cheol Jeong, MD, Director of Busan Big Hospital (Neurosurgery). Former Assistant Professor at Severance Hospital and Visiting Professor at NYU Hospital. He specializes in a wide range of spinal conditions, with a particular focus on cervical myelopathy, cervical foraminal stenosis, and complex cervical disc disorders.
