Populations and Risk Factors
- Adults over 45 (60% prevalence); over 65 (85% prevalence) — nearly universal with aging
- Cervical and lumbar spine most commonly affected due to high mobility and load-bearing demands
- Thoracic spine less commonly symptomatic (protected by rib cage stability)
- Individuals with chronic postural imbalances (forward head, excessive lordosis)
- Those with history of spinal injury, repetitive occupational loading, or vibration exposure
- Obesity increases axial load and accelerates disc degeneration
- Genetic predisposition to disc degeneration (twin studies show up to 75% genetic contribution)
- Smoking accelerates disc degeneration (reduced disc nutrition from impaired blood flow)
Causes and Pathophysiology
The Three-Joint Complex — Cascade of Degeneration
- Each spinal segment functions as a three-joint complex: the intervertebral disc (anterior weight-bearing structure) and two facet joints (posterior guiding and load-sharing structures).
- Disc degeneration begins with loss of proteoglycans in the nucleus pulposus — the disc loses water content, height, and shock-absorbing capacity.
- As disc height decreases, the facet joints override (approximate excessively), shifting load from the disc to the posterior structures.
- Facet joint overload produces cartilage wear, subchondral sclerosis, and osteophyte (bone spur) formation along the joint margins.
- Osteophytes form along vertebral body margins (anterior and lateral) and within the neural foramen (posterior).
Foraminal and Canal Narrowing
- Foraminal osteophytes from uncovertebral joints (cervical) and facet joints (all levels) narrow the intervertebral foramen through which spinal nerve roots exit.
- Ligamentum flavum hypertrophies with age (thickens and may calcify), narrowing the spinal canal from the posterior side.
- The combination of disc bulging (anterior), facet and uncovertebral osteophytes (lateral), and ligamentum flavum thickening (posterior) produces progressive stenosis — both foraminal (nerve root compression) and central (spinal cord compression in the cervical spine).
- This progression makes spondylosis the most common cause of acquired spinal stenosis.
Distinguish from Related Conditions
- Spondylosis: degenerative changes of the spine (this article)
- Spondylolisthesis: anterior displacement of one vertebra on another (slippage); may result from spondylosis-related facet degeneration or from a pars defect
- Spondylolysis: fracture/defect of the pars interarticularis (bony bridge connecting the facet joints); common in young athletes from repetitive hyperextension (gymnasts, football linemen)
- These three conditions have similar-sounding names but are fundamentally different pathologies — their distinction is testable on the CMTO exam.
Why Cervical Spondylosis Is Especially Concerning
- Cervical osteophytes can compress the vertebral arteries in the transverse foramina, producing vertebrobasilar insufficiency symptoms (dizziness, visual disturbance, drop attacks) — particularly during cervical rotation and extension.
- Cervical central canal stenosis can compress the spinal cord (myelopathy) — producing bilateral upper and lower extremity symptoms, gait disturbance, and bowel/bladder dysfunction.
Signs and Symptoms
Uncomplicated Spondylosis (Most Common Presentation)
- Often asymptomatic — radiographic spondylosis is present in most elderly adults without symptoms
- Primary sign is slow, progressive loss of ROM in the affected spinal region
- Stiffness, particularly in the morning or after prolonged rest (typically <30 minutes, unlike inflammatory conditions)
- Pain with extension and rotation (closes the foramen and approximates facet joints)
- Pain typically relieved by flexion (opens the foramen) and moderate activity
- Crepitus with spinal movement
Spondylosis with Radiculopathy (Nerve Root Compression)
- Shooting pain, tingling, numbness, or weakness in a specific dermatomal/myotomal distribution
- Cervical: radicular arm pain following C5, C6, C7, or C8 distribution
- Lumbar: radicular leg pain following L4, L5, or S1 distribution
- Symptoms worse with extension and ipsilateral lateral flexion (closes the foramen)
- Symptoms improved with flexion and contralateral lateral flexion (opens the foramen)
- Specific muscle weakness if motor nerve root compression is significant
Spondylosis with Myelopathy (Spinal Cord Compression — Red Flag)
- Bilateral symptoms — numbness, tingling, or weakness in BOTH upper and lower extremities
- Gait disturbance — wide-based, uncoordinated (ataxic) gait
- Hand clumsiness — difficulty with fine motor tasks (buttons, writing)
- Bowel and/or bladder dysfunction (urgency, incontinence, retention)
- Lhermitte's sign positive (electric shock down the spine with neck flexion)
- Myelopathy is a red flag requiring urgent medical referral — progressive spinal cord compression can cause permanent neurological damage
Assessment Profile
Subjective Presentation
- Chief complaint: "my neck/back is stiff and getting stiffer over the years" or "I get shooting pain down my arm/leg when I look up or turn my head"; many patients present with incidental spondylosis discovered on imaging for another complaint
- Pain quality: deep, aching stiffness in the affected spinal region (mechanical degeneration); sharp, shooting, electrical pain if radiculopathy develops; bilateral tingling or heaviness in extremities if myelopathy
- Onset: gradual — progressive over months to years; no specific traumatic event; symptoms may fluctuate with activity level and weather
- Aggravating factors: spinal extension and ipsilateral lateral flexion (closes the foramen, approximates facets); prolonged static positions; sustained cervical rotation (e.g., checking blind spot while driving); walking or standing for prolonged periods (lumbar extension loading)
- Easing factors: spinal flexion (opens the foramen); moderate activity after initial warm-up; rest; mild analgesics (NSAIDs typically effective); seated position (lumbar flexion)
- Red flags: Bilateral symptoms (arms and/or legs), gait changes, hand clumsiness, bowel/bladder dysfunction — suspect myelopathy; urgent medical referral. Dizziness, visual disturbance, nausea, or drop attacks with cervical rotation/extension — suspect vertebrobasilar insufficiency from cervical osteophyte compression of vertebral arteries; medical referral; do not proceed with cervical treatment.
Observation
- Local inspection: loss of normal cervical lordosis or lumbar lordosis; increased thoracic kyphosis; reduced segmental movement visible during active motion (segments move as a block rather than individually); no significant swelling unless concurrent facet inflammation
- Posture: forward head posture (cervical spondylosis); rounded shoulders; hyperkyphosis; compensatory postural patterns from pain avoidance
- Gait: typically normal in uncomplicated spondylosis; wide-based ataxic gait in myelopathy; cautious, slow gait with reduced stride if lumbar stenosis produces neurogenic claudication
Palpation
- Tone: paravertebral muscle hypertonicity at the affected levels — this is chronic protective guarding; muscles in the lamina groove are typically most hypertonic; cervical extensors and suboccipitals hypertonic from forward head posture; lumbar multifidus may be inhibited (atrophied) despite superficial erector spinae hypertonicity
- Tenderness: facet joint tenderness (deep, lateral to the spinous process, in the lamina groove); spinous process tenderness at affected levels; paraspinal muscle tenderness from chronic hypertonicity; trigger points in muscles compensating for restricted segmental motion
- Temperature: typically normal; warmth over a specific facet joint suggests acute inflammatory flare (facet arthropathy)
- Tissue quality: hypertonic, fibrotic paraspinal muscles at the affected levels; reduced intersegmental mobility on spring testing (posterior-anterior pressure over the spinous process meets increased resistance); bony facet prominence palpable laterally at degenerated segments; ligamentum flavum thickening not directly palpable but contributes to reduced spring quality
Motion Assessment
- AROM: progressive loss of range in extension, rotation, and lateral flexion — all narrow the foramen and approximate the facets; flexion is typically the best preserved movement; cervical rotation restriction may be asymmetric; overall motion reduces gradually over years; range may improve slightly with warm-up (unlike ankylosing spondylitis where improvement with movement is more dramatic)
- PROM / end-feel: firm capsular or bone-to-bone end-feel occurring early in range — reflects structural fixation from osteophytes, disc narrowing, and capsular fibrosis; end-feel is harder and more unyielding than muscular guarding (which yields with sustained pressure); at segments with advanced degeneration, the end-feel is essentially bony — no further motion is available
- Resisted testing: generally normal strength unless radiculopathy produces myotomal weakness; test specific myotomes if radicular symptoms are present (C5: deltoid; C6: wrist extensors; C7: triceps; L4: tibialis anterior; L5: EHL; S1: gastrocnemius); weakness in a specific myotome with concurrent dermatomal sensory loss confirms radiculopathy level
Special Test Cluster
| Test | Positive Finding | Purpose |
|---|---|---|
| Spurling's Test (Foraminal Compression) (CMTO) | Axial compression with extension, lateral flexion, and rotation toward the symptomatic side reproduces ipsilateral radicular arm or neck pain | Confirm cervical nerve root irritation from foraminal narrowing; highly specific for cervical radiculopathy |
| Cervical Distraction Test (CMTO) | Axial distraction (gentle upward traction) of the cervical spine reduces or eliminates arm or neck pain | Confirm foraminal origin of pain — distraction opens the foramen and decompresses the nerve root; positive confirms the compressive mechanism |
| Kemp's Test (Lumbar Quadrant) (CMTO) | Extension with ipsilateral lateral flexion and rotation reproduces ipsilateral low back or radicular leg pain | Confirm lumbar facet or foraminal pathology; compresses the ipsilateral foramen and loads the facet joint |
| Dermatome and Reflex Screen (CMTO) | Numbness in a specific dermatomal pattern; hypoactive DTRs at the corresponding level | Localize the specific spinal segment being compressed; differentiate radiculopathy from referred muscle pain |
| Lhermitte's Sign (supplementary — red flag screen) | Electric shock sensation down the spine or into the limbs with passive cervical flexion | Red flag for spinal cord involvement (myelopathy) — urgent medical referral; do not proceed with cervical mobilization |
| VBI Screen (Sustained Extension + Rotation) (supplementary — red flag screen) | Dizziness, nystagmus, visual changes, nausea, or drop attack during sustained cervical extension and rotation | Red flag for vertebrobasilar insufficiency from cervical osteophyte compression of vertebral arteries; do not proceed with cervical treatment |
Radiculopathy vs. myelopathy: Radiculopathy produces unilateral dermatomal symptoms (single nerve root). Myelopathy produces bilateral symptoms (spinal cord compression). This distinction is critical — radiculopathy may be managed conservatively; myelopathy requires urgent surgical assessment.
Differential Assessment
| Condition | Key Distinguishing Feature |
|---|---|
| Disc Herniation | More acute onset; often related to specific mechanism; dermatomal pain pattern; SLR positive (lumbar); Spurling's positive (cervical); may occur at a segment with spondylotic changes (both can coexist) |
| Spondylolisthesis | Anterior vertebral slippage visible on lateral radiograph; step deformity palpable at the affected level; instability signs; may result from advanced spondylosis at the facet joints |
| Ankylosing Spondylitis | Inflammatory back pain (worse with rest, better with movement); onset before age 30; bilateral sacroiliitis; HLA-B27 positive; morning stiffness >1 hour; dramatically different from mechanical spondylosis pattern |
| Spinal Tumor (Metastatic) | Night pain that does not improve with rest or position change; weight loss; known cancer history; progressive neurological deficit; urgent imaging and oncologic referral |
| Cervical Myelopathy | Bilateral upper and lower extremity symptoms; gait disturbance; hand clumsiness; positive Lhermitte's sign; urgent surgical assessment |
CMTO Exam Relevance
- CMTO Appendix category A1 (MSK conditions)
- Know the three-joint complex concept: disc + 2 facet joints function as a unit; disc degeneration produces facet overload
- Spurling's test (foraminal compression) is the key diagnostic test for cervical radiculopathy — know the mechanism and positive finding
- Cervical distraction test confirms foraminal origin by relieving the compression
- Know radiculopathy (unilateral, dermatomal) vs. myelopathy (bilateral, cord compression) distinction — myelopathy is a red flag
- Distinguish spondylosis from spondylolisthesis from spondylolysis — similar names, different conditions
- Protective hypertonic paraspinal muscles should not be reduced prematurely if doing so would destabilize the spine
- VBI screening is mandatory before any cervical treatment in elderly patients with spondylosis
Massage Therapy Considerations
- Primary therapeutic target: chronic paraspinal muscle hypertonicity and compensatory postural strain; pain modulation at affected segments through gentle oscillatory mobilization; maintaining available ROM at non-degenerated segments
- Sequencing logic: warm paraspinal muscles first (moist heat, effleurage) to reduce viscosity; address superficial muscle tension (upper trapezius, cervical extensors, erector spinae) before deeper segmental work; gentle oscillatory mobilization at the affected segments for pain modulation; active ROM exercises to reinforce gains
- Safety / contraindications: myelopathy signs (bilateral symptoms, gait changes, Lhermitte positive) contraindicate cervical mobilization and require urgent referral; VBI signs (dizziness with cervical rotation/extension) contraindicate further cervical treatment; cervical osteophytes may compress vertebral arteries — monitor for dizziness during head rotation and extension; protective hypertonic muscles should not be reduced prematurely if doing so destabilizes the spine; bone spurs can pressure nerves in certain positions — careful bolstering required
- Heat/cold guidance: warm moist heat to paraspinal muscles before treatment reduces stiffness and improves tissue response; avoid heat during acute facet flares; ice post-treatment if reactive inflammation develops
Treatment Plan Foundation
Clinical Goals
- Reduce chronic paraspinal muscle tension and pain
- Maintain available ROM at non-degenerated segments
- Manage compensatory postural strain from progressive spinal stiffness
- Modulate pain at affected segments through gentle oscillatory techniques
Position
- Supine with cervical support for cervical spondylosis — bolster neck to maintain neutral; avoid excessive extension
- Side-lying for thoracic and lumbar access if prone is uncomfortable
- Prone with face cradle adjusted to maintain cervical neutral — avoid forced rotation or extension
Session Sequence
- Superficial paraspinal warm-up — effleurage and gentle petrissage to the entire posterior trunk; assess segmental tone and identify the most symptomatic levels
- Deep paraspinal release — sustained compression and longitudinal stripping of erector spinae and multifidus at hypertonic segments; address lamina groove tenderness with graduated pressure
- Cervical extensors and suboccipitals (if cervical involvement) — careful release of deep cervical extensors and suboccipital triangle; monitor for dizziness throughout [perform VBI screen before cervical work]
- Compensatory postural muscles — anterior chest wall (pectorals), hip flexors (if lumbar), and upper trapezius to address chronic postural compensation
- Gentle segmental oscillation — Grade I–II oscillatory posterior-anterior pressure over spinous processes at affected levels for pain modulation; do not force motion at degenerated segments
- Active ROM — gentle active cervical/lumbar movement through available range to reinforce any gains from soft tissue work
- Reassess ROM and symptom levels
Adjunct Modalities
- Hydrotherapy: warm moist heat to paraspinal muscles before treatment; avoid heat during acute facet flare; contrast hydrotherapy for chronic stiffness
- Joint mobilization: Grade I–II oscillatory mobilization at degenerated segments for pain modulation; Grade III at adjacent mobile segments to maintain available motion; never mobilize if myelopathy or VBI signs are present
- Remedial exercise (on-table): chin tucks for cervical postural correction; gentle cervical rotation within available range; lumbar flexion exercises (knee-to-chest) to open the foramen and stretch the posterior chain
Exam Station Notes
- Perform VBI screening before any cervical treatment — the examiner expects this as a safety step for elderly patients with cervical spondylosis
- Demonstrate Spurling's test and cervical distraction as the primary cervical assessment pair
- State that myelopathy signs (bilateral symptoms, Lhermitte positive) contraindicate cervical mobilization
- Show awareness that protective muscle hypertonicity serves a stabilizing function
Verbal Notes
- VBI screening: "Before I work on your neck, I'm going to check how your neck and blood vessels respond to certain positions. I'll hold your head in a few positions for about 30 seconds each — please tell me immediately if you feel dizzy, nauseous, or see any visual changes."
- Protective muscle awareness: "Some of the tension in your neck and back muscles is actually protecting your spine. I'll work to reduce your pain and stiffness, but I won't try to completely eliminate the muscle tension — your body needs some of that support."
Self-Care
- Gentle active ROM exercises for the affected spinal region — cervical rotations, lateral flexion, and chin tucks; lumbar flexion (knee-to-chest), gentle rotation in supine — performed 2–3 times daily to maintain available motion
- Postural awareness: avoid sustained cervical extension (looking up for long periods), avoid sleeping prone (forces cervical rotation), ergonomic workspace setup
- Warm shower or moist heat before morning activities to reduce stiffness
- Walking program to maintain general mobility and spinal health — moderate activity is more beneficial than rest for mechanical spinal conditions
Key Takeaways
- Spondylosis is spinal osteoarthritis from the three-joint complex cascade: disc degeneration produces facet overload, osteophyte formation, and progressive stenosis — present in 60% of those over 45 and 85% over 65
- Spurling's test (foraminal compression) is the key diagnostic test for cervical radiculopathy; cervical distraction confirms foraminal origin by relieving symptoms
- Red flag: myelopathy signs (bilateral symptoms, gait changes, Lhermitte positive, bowel/bladder dysfunction) require urgent medical referral — progressive cord compression causes permanent damage
- Cervical osteophytes may compress vertebral arteries — VBI screening (sustained extension + rotation) is mandatory before cervical treatment
- Distinguish spondylosis (degeneration) from spondylolisthesis (slippage) from spondylolysis (pars fracture) — similar names, different pathologies
- Protective hypertonic paraspinal muscles should not be reduced prematurely if doing so destabilizes the spine
- Spondylosis is the most common cause of acquired spinal stenosis