Understanding cervical spine anatomy, neck pain diagnoses, and treatment options can feel overwhelming. This glossary offers patient-friendly definitions to help you engage more confidently with your care. Many neck pain conditions respond well to non-surgical management; outcomes vary by individual, and each patient is evaluated based on their specific anatomy, history, and imaging findings.

Cervical Spine Anatomy

Cervical Vertebrae

The cervical vertebrae are the seven small bones forming the neck portion of the spine, labeled C1 through C7. These bones protect the spinal cord, support the skull, and enable a wide range of head and neck movement. Fractures, misalignments, or degenerative changes to these vertebrae may contribute to chronic neck pain, stiffness, and nerve compression — though the degree of symptoms varies considerably from person to person.

Cervical Disc

A cervical disc is the cushion-like structure positioned between adjacent cervical vertebrae. Each disc acts as a shock absorber, allowing flexibility while protecting vertebrae from impact forces. Structurally, a disc consists of a tough outer ring (the annulus fibrosus) surrounding a soft, gel-like center (the nucleus pulposus). Damage or degeneration to these discs is a common contributing factor to neck pain, radiating arm symptoms, and neurological changes in some patients.

Annulus Fibrosus

The annulus fibrosus is the dense, fibrous outer ring of a spinal disc. Composed of multiple concentric layers of collagen fibers, its primary roles are to contain the nucleus pulposus and provide structural stability to the disc. When the annulus develops tears — due to trauma, repetitive strain, or age-related wear — inflammatory chemicals may leak into surrounding tissue, potentially irritating nearby nerves and contributing to discogenic neck pain in affected individuals.

Nucleus Pulposus

The nucleus pulposus is the soft, gelatinous, water-rich core of each spinal disc. It distributes compressive forces across the vertebrae during movement and impact. When the surrounding annulus fibrosus is torn, the nucleus pulposus may bulge outward or extrude through the tear, potentially compressing adjacent nerve roots and triggering inflammation — a mechanism that may produce neck and arm symptoms in some patients.

Cervical Foramen

Each cervical vertebra has paired foramina — small bony openings through which spinal nerve roots exit the spinal canal to travel toward the shoulders, arms, and hands. When these passageways narrow due to disc bulges, herniations, bone spurs, or inflammation, the exiting nerve root may become compressed. This condition, known as foraminal stenosis, is one pathway through which cervical radiculopathy develops in some individuals.

Cervical Facet Joint

Cervical facet joints are small, paired articulations located on the posterior aspect of each cervical vertebra. Together with the discs, they guide and stabilize neck movement, including bending and rotation. Over time, these joints may develop osteoarthritis or become inflamed following injury or degeneration. When this occurs, some patients experience localized neck pain, stiffness, and referred pain radiating toward the head or shoulders — a presentation often called cervical facet syndrome.

Common Neck Pain Conditions

Annular Tear

An annular tear is a fissure or rip within the annulus fibrosus — the tough outer wall of a cervical disc. These tears may result from acute injury, repetitive mechanical stress, or gradual age-related degeneration. They are a recognized source of discogenic neck pain, as the tear may allow nucleus pulposus material and inflammatory mediators to contact pain-sensitive nerve fibers within the disc wall. Because intervertebral discs have a limited blood supply, annular tears often have difficulty healing without targeted intervention. To learn more about how these tears are addressed, see our overview of annular tears and non-surgical treatment options.

Degenerative Disc Disease (DDD)

Degenerative Disc Disease (DDD) in the cervical spine describes a progressive loss of disc integrity over time — including decreased disc height, reduced hydration, and the development of structural tears. Despite its clinical name, DDD is not a discrete disease but rather a spectrum of age-related changes that can produce significant symptoms in some individuals. These changes may contribute to neck pain, stiffness, and nerve compression, and may set the stage for conditions such as herniated discs or spinal stenosis in susceptible patients.

Cervical Herniated Disc

A cervical herniated disc occurs when the nucleus pulposus pushes through a tear in the annulus fibrosus and the extruded material contacts adjacent spinal nerves or the spinal cord. Depending on the location and extent of herniation, affected individuals may experience pain, numbness, tingling, or weakness radiating into the shoulder, arm, or hand. This condition is also described clinically as a ruptured or slipped disc. Outcomes vary; many patients improve with conservative or minimally invasive care before surgical options are considered.

Cervical Bulging Disc

A cervical bulging disc describes a condition in which the outer wall of a disc extends beyond its normal boundaries without fully rupturing. Unlike a herniation, the nucleus pulposus remains contained within the annulus. Even so, a bulging disc may press on nearby neural structures in some patients, producing neck pain, stiffness, or radicular symptoms depending on the direction and magnitude of the bulge.

Cervical Radiculopathy

Cervical radiculopathy occurs when a nerve root in the neck is irritated or compressed — most commonly by a herniated disc, bone spur (osteophyte), or foraminal stenosis. Compression causes symptoms that travel along the nerve’s distribution, potentially producing pain, numbness, tingling, or weakness in the shoulder, arm, hand, or fingers. The severity and character of symptoms differ between patients depending on the level and degree of nerve involvement. For context on related conditions, see our article on common symptoms of spinal stenosis.

Cervical Myelopathy

Cervical myelopathy is a more serious condition arising from compression of the spinal cord itself within the cervical canal, often associated with severe stenosis, disc herniations, or osteophyte formation. Unlike radiculopathy — which affects individual nerve roots — myelopathy may produce widespread neurological changes, potentially including hand clumsiness, gait disturbances, limb weakness, and in some cases bladder or bowel dysfunction. Patients with suspected myelopathy are evaluated promptly, as the condition may require timely medical attention. Our article on early signs of central cord syndrome after neck trauma provides additional context.

Spinal Stenosis

Cervical spinal stenosis refers to a narrowing of the spinal canal or nerve root foramina in the neck. This narrowing is most commonly caused by degenerative changes such as bulging discs, thickened ligaments, or osteophytes. When the available space becomes sufficiently restricted, the spinal cord or individual nerve roots may be compressed — potentially producing pain, numbness, weakness, or balance difficulties depending on the structures involved. Severity and symptom patterns vary considerably between patients. See our dedicated resource on non-surgical treatments for spinal stenosis for more detail.

Discogenic Pain

Discogenic pain refers to pain that originates directly from a structurally compromised intervertebral disc, rather than exclusively from nerve compression. In the cervical spine, this pain is often perceived as a deep, poorly localized ache that may worsen with neck flexion, sustained sitting, or rotational movements. It is typically caused by annular tears or internal disc disruption, where the disc itself becomes the primary pain generator even in the absence of overt neurological impingement. Recognizing discogenic pain as a distinct entity is important for directing appropriate diagnostic and treatment strategies.

Diagnostic Procedures

Annulargram

An annulargram is a specialized diagnostic procedure used to identify and characterize annular tears in cervical discs that may not be fully visible on standard MRI imaging. Under fluoroscopic (real-time X-ray) guidance, a contrast agent is carefully injected into the suspected disc. If a tear is present, the contrast may leak through the disrupted annular fibers, helping to confirm the location and extent of the tear. This information may be used to determine whether a patient is a suitable candidate for biologic disc repair, though candidacy is always assessed on an individual basis. Learn more about the diagnostic and imaging evaluation process in our glossary of diagnostic imaging and evaluation terms.

Treatment Approaches

Intra-Annular Fibrin Injection

Intra-annular fibrin injection is a minimally invasive, biologic treatment approach for chronic neck and back pain attributed to annular tears. The procedure involves injecting a fibrin preparation — derived from a natural healing protein — directly into the damaged outer ring of the affected disc under imaging guidance. The fibrin is intended to act as a biological scaffold and sealant, supporting the disc’s intrinsic repair mechanisms and helping to stabilize the annulus. This approach may be appropriate for carefully selected candidates; outcomes vary, and each patient’s eligibility is determined through individual evaluation. For a broader overview of biologic treatment concepts, visit our glossary of key terms in regenerative spine care.

Expert Take

Accurate terminology is foundational to informed shared decision-making. Our clinical team emphasizes that terms like “annular tear,” “discogenic pain,” and “radiculopathy” describe distinct mechanisms that may each respond differently to treatment. Understanding these distinctions helps patients ask more targeted questions and participate meaningfully in their own care planning. No single treatment approach suits every individual — a thorough evaluation of imaging, symptom history, and functional goals guides each recommendation.

To explore related terminology, we recommend reviewing our glossary of key terms in spine anatomy and conditions and our broader resource on spine health and treatment terms.