Cervical myelopathy is a condition where the spinal cord in your neck becomes compressed, leading to progressive problems with hand coordination, walking, and sensation. It’s the most common cause of spinal cord dysfunction in adults over 55, with an estimated prevalence of about 2.3% in the general population. The compression usually develops gradually from age-related changes in the spine, which is why you’ll often see it called degenerative cervical myelopathy, or DCM.
What makes this condition particularly important to understand is that spinal cord compression in the neck is actually very common as people age, showing up on imaging in 35% of people over 60, but only a fraction of those people develop symptoms. When symptoms do appear, they tend to worsen over time without treatment.
What Causes the Spinal Cord to Get Compressed
The most frequent cause is cervical spondylosis, a broad term for the gradual wear and tear of the spinal structures in your neck. As the discs between your vertebrae lose height and dry out with age, the body compensates by forming bone spurs. These bony growths, along with bulging or herniated discs, can narrow the spinal canal and press directly on the cord.
Another cause is hardening (ossification) of the ligaments that run along the back of the vertebral bodies, known as OPLL. This ligament gradually turns to bone in some people, creating a rigid bar that pushes into the spinal cord from the front. Less common causes include rheumatoid arthritis affecting the neck joints, spinal infections, tumors, and trauma such as whiplash injuries. In many cases, more than one of these factors contributes at the same time.
How Symptoms Typically Appear
Cervical myelopathy usually starts subtly. The earliest signs often involve your hands: difficulty buttoning a shirt, trouble using chopsticks or writing, dropping objects, or a vague sense that your fingers feel clumsy or numb. Many people chalk this up to aging or carpal tunnel syndrome, which is one reason the condition goes undiagnosed for months or years.
As compression progresses, walking becomes affected. You might notice your gait feels unsteady, as though you’re walking on an uneven surface even on flat ground. Some people describe their legs feeling heavy or stiff. In clinical terms, this produces a characteristic wide-based, stiff-legged walking pattern. Balance problems can make you reach for handrails more often or feel less confident on stairs.
In more advanced stages, the symptoms expand to include weakness in the arms and legs, loss of sensation in the hands or feet, and in severe cases, loss of bladder or bowel control. Neck pain and stiffness are common but not universal. Some people have significant cord compression with very little neck pain, while others have severe neck pain with relatively mild neurological symptoms.
How It’s Diagnosed
Diagnosis combines a physical exam with imaging. During the exam, a doctor checks your reflexes, hand grip strength, ability to walk heel-to-toe, and several specific neurological signs. Overactive reflexes (hyperreflexia) are the most sensitive finding, present in about 94% of confirmed cases. A reflex test where flicking the middle fingernail triggers the thumb to flex is positive in roughly 81% of cases. These signs become more common as the disease gets worse, which means they can be unreliable in early, mild cases.
MRI is the gold standard for confirming the diagnosis. It shows exactly where the cord is being compressed and whether the cord itself has been damaged. On MRI, bright signal on certain sequences indicates swelling or scarring in the cord that may still be reversible, while dark signal on other sequences suggests more permanent tissue damage. The distinction matters because it helps predict how much recovery is possible after treatment.
Conditions That Look Similar
Several neurological diseases can mimic cervical myelopathy, making accurate diagnosis critical. Multiple sclerosis (MS) can cause similar limb weakness, numbness, and walking difficulty, but MS typically also involves visual disturbances and has a different pattern on MRI, with lesions scattered throughout the brain and spinal cord rather than concentrated at a single compression point in the neck.
Amyotrophic lateral sclerosis (ALS) shares the progressive weakness, but ALS does not cause sensory loss. If you can feel everything normally but your muscles are weakening, that points away from myelopathy. ALS also tends to affect speech and swallowing (bulbar symptoms), which cervical myelopathy does not. In ALS, MRI is primarily used to rule out other causes rather than confirm the diagnosis itself.
Severity Grading
Doctors classify cervical myelopathy as mild, moderate, or severe using a scoring system called the modified Japanese Orthopaedic Association (mJOA) scale, which rates your ability to use your hands, walk, and perform daily tasks on a scale from 0 to 18. Scores of 15 to 17 indicate mild disease, 12 to 14 moderate, and 0 to 11 severe. This classification directly guides treatment decisions.
Treatment: When Surgery Is Recommended
For moderate and severe cervical myelopathy, international guidelines strongly recommend surgery. The goal is to take pressure off the spinal cord before damage becomes irreversible. Waiting too long is one of the biggest risks, since studies show that 20 to 60% of people with untreated cervical myelopathy will get worse over time.
For mild cases, the decision is less clear-cut. Surgery is considered a valid option with favorable outcomes, but structured follow-up without surgery is also reasonable if symptoms are stable. The key is regular monitoring, because even mild cases can progress to moderate or severe stages. If symptoms worsen during a watch-and-wait period, surgery is typically reconsidered.
Surgical Approaches
The two main surgical strategies are an approach from the front of the neck and an approach from the back. The front approach (anterior surgery) involves removing the disc or bone compressing the cord and fusing the vertebrae together. The back approach (posterior surgery, often called laminoplasty) opens up the spinal canal by reshaping the bone arches that form the back of the canal, giving the cord more room.
Both approaches are equally effective at stopping myelopathy from getting worse. In a study comparing the two for patients needing surgery at three or four levels, myelopathy scores improved by the same amount regardless of approach. However, patients who had front-of-neck surgery reported greater improvement in neck pain, arm pain, and overall neck-related disability at one year. Patients who had the back approach had a slightly longer hospital stay (about two days versus one and a half) but similar rates of complications and reoperations.
The choice between approaches depends on factors like how many levels are affected, whether the compression is coming from the front or back of the cord, and the natural curvature of your neck.
Recovery After Surgery
Recovery is real but gradual, and it varies widely from person to person. On average, arm strength improvement takes about 51 days, balance improvement about 60 days, and numbness improvement about 85 days. But the range is enormous: some people notice strength gains within a week, while others take seven months or more for numbness to improve.
Not everyone improves in every area. In one study, about 66% of patients saw improvement in numbness, 63% in balance, and 56% in upper extremity strength after surgery. That means a meaningful portion of patients stabilize rather than improve, which underscores why earlier intervention, before severe cord damage accumulates, tends to produce better outcomes. The primary goal of surgery in advanced cases shifts from recovery to preventing further decline.
What Happens Without Treatment
Cervical myelopathy does not typically resolve on its own. The natural history follows a pattern of gradual worsening punctuated by periods of stability. Some people remain stable for years, but there’s no reliable way to predict who will deteriorate and when. The 20 to 60% deterioration rate in untreated patients makes regular follow-up essential, even for those initially managed without surgery. Physical therapy, activity modifications, and neck bracing can help manage symptoms but do not address the underlying compression.