Classification
- Type: Synovial plane (gliding)
- Degrees of freedom: 6 (3 rotations + 3 translations — practically, flexion/extension, lateral flexion, and rotation are the primary movements)
- Region: Cervical spine (C2-C3 through C6-C7); excludes the upper cervical joints (anatomy/joints/atlantooccipital and anatomy/joints/atlantoaxial)
Articular Surfaces
- Superior articular facets (concave): Face superiorly and posteriorly at approximately 45° from the horizontal plane. This oblique angle facilitates gliding movements in all planes.
- Inferior articular facets (convex): Face inferiorly and anteriorly. They sit on the inferior articular processes of the vertebra above and glide on the superior facets below.
- Facet joint capsule: Relatively loose capsule, allowing significant mobility. The capsule is richly innervated by the medial branches of the cervical dorsal rami — this is why facet joint dysfunction is so painful and why facet joint injections and medial branch blocks are common diagnostic and therapeutic procedures.
- Meniscoid inclusions: Small fibrous or fibroadipose meniscoid folds project into the joint from the capsule margins. These can become trapped during rapid movements (e.g., whiplash), causing acute facet joint locking and pain.
Movements and ROM
| Movement |
Normal ROM (total C2-C7) |
Segmental Contribution |
Muscles Producing |
| Flexion |
35–50° |
~8° per segment; greatest at C5-C6 |
anatomy/muscles/longus-colli, anatomy/muscles/longus-capitis, anatomy/muscles/sternocleidomastoid |
| Extension |
60–80° |
~8° per segment; greatest at C5-C6 |
anatomy/muscles/semispinalis-cervicis, anatomy/muscles/splenius-cervicis, anatomy/muscles/multifidus, anatomy/muscles/upper-trapezius |
| Lateral flexion |
20–40° (each side) |
~5° per segment |
anatomy/muscles/scalenes, anatomy/muscles/levator-scapulae, anatomy/muscles/splenius-cervicis |
| Rotation |
20–30° (each side; total including C1-C2: 70–90°) |
~5° per segment |
anatomy/muscles/splenius-cervicis, anatomy/muscles/multifidus, anatomy/muscles/sternocleidomastoid, anatomy/muscles/scalenes |
Coupled motion: In the cervical spine (C2-C7), lateral flexion and rotation are coupled to the same side — when you laterally flex the cervical spine to the right, the vertebral bodies rotate to the right. This coupling pattern is the opposite of the thoracic and lumbar spine (where coupling to the opposite side occurs in some models). Understanding coupled motion is essential for assessing segmental restriction.
Capsular Pattern
Equal limitation of lateral flexion and rotation; extension may be limited
The cervical facet capsular pattern is less clearly defined than peripheral joint patterns. Most sources describe lateral flexion and rotation as equally and most limited, with extension also restricted. Flexion is usually the least affected movement.
Resting Position
- Slight extension (neutral lordosis)
- Capsules relaxed, facet joints in mid-position
Close-Packed Position
- Full extension
- Facets maximally engaged, capsules and ligaments taut
- This is why cervical extension is provocative in facet joint conditions — it compresses already-irritated facet surfaces
End-Feels
| Movement |
Normal End-Feel |
Type |
| Flexion |
Capsular (firm) |
Posterior capsule, ligamentum flavum, posterior longitudinal ligament |
| Extension |
Capsular (firm) / bony |
Facet joint compression, capsule; may be bony (spinous process contact) at extreme extension |
| Lateral flexion |
Capsular (firm) |
Contralateral capsule, intertransverse ligaments |
| Rotation |
Capsular (firm) |
Capsule, disc annulus, coupled facet compression |
Ligaments
Ligamentum Flavum
- Attachments: Lamina of vertebra above → lamina of vertebra below (on the posterior aspect, lining the spinal canal)
- Function: Resists excessive flexion and prevents buckling of the ligament into the spinal canal during extension. Its high elastin content allows it to stretch during flexion and recoil during extension. In the cervical spine, hypertrophy of the ligamentum flavum can contribute to cervical spinal stenosis.
Interspinous Ligament
- Attachments: Between adjacent spinous processes
- Function: Resists flexion and separation of the spinous processes
Ligamentum Nuchae
- Attachments: External occipital protuberance and median nuchal line → spinous processes of C1-C7 (and occasionally upper thoracic vertebrae)
- Function: The cervical equivalent of the supraspinous ligament — a strong midline septum that resists flexion and provides attachment for cervical and upper back muscles (trapezius, splenius, rhomboids)
Facet Joint Capsular Ligaments
- Attachments: Margins of the articular processes of adjacent vertebrae
- Function: Reinforce the facet joint capsule. Richly innervated by the medial branches of the dorsal rami — making them a significant source of pain in facet joint dysfunction.
Mobilization Techniques
Hands-on instruction is required. The descriptions below provide clinical reference detail for understanding and supervised practice. They are not a substitute for instructor-led technique training. Correct hand placement, force dosage, and tissue response interpretation require hands-on coaching and feedback.
Spinal Mobilization Principles
Cervical facet mobilization involves applying posterior-to-anterior (PA) or unilateral PA glides to the articular pillars to restore segmental motion. The articular pillar is the column of bone formed by the superior and inferior articular processes — it is palpable as a rounded prominence approximately 2–3 cm lateral to the cervical spinous processes.
General Contraindications
- Absolute: Cervical instability (positive stress tests), fracture, dislocation, cervical myelopathy (upper motor neuron signs), VBI (positive screening), active infection, malignancy, inflammatory arthritis with active synovitis (RA), severe osteoporosis, cauda equina-equivalent signs (upper extremity bilateral neurological deficit)
- Relative: Cervical disc herniation with radiculopathy (avoid provocation of nerve root; use Grade I–II distally directed techniques), moderate osteoporosis (Grade I–II only), spondylolisthesis (avoid PA glides at the involved segment), anticoagulant therapy
- VBI screening required before all cervical mobilization techniques
Unilateral PA Glide on the Articular Pillar
Purpose: Restores segmental mobility at a specific cervical level. Unilateral PA glides produce coupled flexion, lateral flexion, and rotation at the target segment — addressing the multiplanar nature of cervical facet restriction. This is the most commonly used cervical facet mobilization technique.
Patient position:
- Prone with the forehead on a face cradle or folded towel (to maintain slight cervical flexion)
- Alternatively: supine with the head cradled in the clinician's hands
- Cervical spine in neutral to slight flexion
Hand placement (prone):
- Mobilizing hand: The thumb pad or pisiform contacts the articular pillar at the target segment on the restricted side. The articular pillar is located approximately 2–3 cm lateral to the midline spinous processes. It feels like a smooth, rounded column of bone.
- Guiding hand: The opposite hand reinforces the mobilizing hand or stabilizes the adjacent segment.
Technique execution:
- Apply a slow, oscillatory force directed anteriorly (toward the table in prone) on the articular pillar at the target level
- The force angle can be varied: directed straight anteriorly (pure PA), directed anteriorly and cephalad (biased toward extension and ipsilateral rotation), or anteriorly and caudad (biased toward flexion)
- Grade I–II: Small amplitude oscillations for pain modulation. Appropriate for acute facet joint irritation, post-whiplash sensitivity, or when the segment is painful.
- Grade III–IV: Large to small amplitude oscillations into end-range segmental resistance. For chronic facet stiffness, post-immobilization restriction, or degenerative hypomobility.
- Rhythm: 1–2 oscillations per second
- Duration: 30–60 seconds per segment, 2–3 sets
Indications:
- Decreased segmental mobility on PA glide testing (compare with adjacent segments and contralateral side)
- Unilateral neck pain with ipsilateral facet tenderness
- Restricted rotation or lateral flexion with a segmental restriction identified
- Cervicogenic headache with C2-C3 facet involvement (the most common cervicogenic facet level)
Technique notes:
- Segmental identification: Count segments from C2 (the first palpable spinous process — large and bifid) downward. The articular pillar lies lateral to each spinous process at the same segmental level.
- Common error: Pressing on the spinous process (midline) rather than the articular pillar (2–3 cm lateral). Central PA glides have different biomechanical effects.
- Common error: Using excessive force. Cervical mobilization requires less force than thoracic or lumbar techniques.
- Reassessment: Re-test segmental PA glide for improved compliance. Re-test active ROM for improvement.
- Integration: Perform after release of paraspinal muscles (multifidus, semispinalis, splenius) and upper trapezius/levator scapulae.
Central PA Glide
Purpose: Restores segmental extension at a specific cervical level. Pressing centrally on the spinous process produces symmetric extension at that segment.
Patient position:
- Prone with forehead on face cradle
Hand placement:
- Mobilizing hand: Thumb pads placed over the spinous process of the target vertebra, reinforced by the other thumb or fingers. The force is directed anteriorly and slightly cephalad (to produce extension).
Technique execution:
- Apply oscillatory PA force on the spinous process
- Grade I–II: Pain modulation
- Grade III–IV: Segmental extension mobilization at end-range
- Duration: 30–60 seconds per segment, 2–3 sets
Indications:
- Segmental extension restriction (stiff segment identified on PA testing)
- Acute wry neck (torticollis) with a locked segment
- Chronic cervical stiffness with loss of lordosis
Technique notes:
- Central PA produces extension; unilateral PA produces coupled rotation/lateral flexion. Choose the technique based on the specific motion restriction.
- Bifid spinous processes: Cervical spinous processes are bifid (split) — the thumb may rest between the two tips. This is normal anatomy, not a fracture.
Muscles Crossing These Joints
Deep Segmental Stabilizers
- anatomy/muscles/multifidus — the deepest and most important segmental stabilizer; spans 2–4 segments; atrophies rapidly after injury (segmental multifidus atrophy is visible on MRI after facet joint injury)
- anatomy/muscles/rotatores — single-segment rotators; contribute to proprioception more than force production
Intermediate Layer
- anatomy/muscles/semispinalis-cervicis — powerful cervical extensor spanning multiple segments
- anatomy/muscles/longus-colli — deep cervical flexor; key stabilizer of the cervical lordosis; weak in patients with forward head posture
Superficial Layer
- anatomy/muscles/splenius-cervicis — extension, rotation, and lateral flexion
- anatomy/muscles/levator-scapulae — attaches to C1-C4 transverse processes; chronic hypertonia produces unilateral cervical stiffness
- anatomy/muscles/upper-trapezius — elevates the scapula and extends the cervical spine
- anatomy/muscles/scalenes — lateral flexion; also respiratory accessory muscles
- anatomy/muscles/sternocleidomastoid — bilateral: cervical flexion; unilateral: contralateral rotation + ipsilateral lateral flexion
Conditions Affecting These Joints
- Cervical facet syndrome — the most common cause of mechanical neck pain; unilateral neck pain with facet tenderness, restricted rotation, and referred pain patterns
- conditions/cervicogenic-headache — C2-C3 facet dysfunction refers pain to the occipital and temporal regions via the third occipital nerve (the medial branch of C3 dorsal ramus crosses directly over the C2-C3 facet joint)
- conditions/osteoarthritis — cervical facet OA (spondylosis) is nearly universal in adults over 60; may narrow the intervertebral foramina (foraminal stenosis), compressing cervical nerve roots
- Acute wry neck (torticollis) — sudden onset of severe unilateral neck pain with locked rotation; often caused by meniscoid entrapment in a facet joint; responds well to gentle mobilization
- Whiplash-associated disorder — hyperextension/hyperflexion injury; facet capsule strain is a primary pain generator; the C5-C6 and C6-C7 facets are most commonly involved
- Cervical radiculopathy — nerve root compression from foraminal narrowing (osteophyte + disc bulge); presents with dermatomal pain, myotomal weakness, and reflex changes
Clinical Notes
- Cervical facet joints are the most common source of mechanical neck pain. The capsular ligaments are richly innervated by the medial branches of the dorsal rami, making them exquisitely sensitive to mechanical deformation. Each cervical facet joint has a specific referral pattern (e.g., C2-C3 refers to the occiput; C5-C6 refers to the suprascapular and deltoid region).
- C2-C3 is the "headache joint." The third occipital nerve (medial branch of C3 dorsal ramus) crosses directly over the C2-C3 facet joint. C2-C3 dysfunction produces occipital and temporal headache — this is the most common cervicogenic headache pattern. The C2-C3 facet joint should always be assessed in headache presentations.
- Segmental multifidus atrophy. After facet joint injury, the multifidus at that specific segment atrophies rapidly (within days) and does not recover spontaneously. This segmental atrophy creates local instability. Manual mobilization alone does not restore multifidus — specific deep neck flexor and multifidus retraining exercises are needed.
- Facet compression in extension. The close-packed position of cervical facets is extension. Patients with facet joint pain are worse with sustained extension (looking up, sleeping prone). The resting position (slight flexion/neutral lordosis) decompresses the facets. Mobilize in the resting position.
Key Takeaways
- Cervical facets are oriented at 45° — this permits multiplanar mobility but makes them vulnerable to injury during rapid movements (whiplash).
- C2-C3 is the "headache joint" — the third occipital nerve crosses this facet; C2-C3 dysfunction is the most common cervicogenic headache source.
- Unilateral PA glides on the articular pillar are the primary cervical facet mobilization — they produce coupled rotation and lateral flexion at the target segment.
- Segmental multifidus atrophy occurs rapidly after facet injury and does not self-recover — mobilization must be combined with specific stabilization exercise.
