Cervical Spine Grating (Crepitus) When Turning the Neck
Cervical spine grating or crepitus during neck rotation is typically a benign finding related to degenerative changes and does not require aggressive intervention in the absence of neurological symptoms, instability, or severe functional impairment. 1
Initial Assessment and Risk Stratification
The first priority is determining whether this represents a benign degenerative process versus an unstable injury requiring immobilization:
- Check for high-risk features that would indicate potential cervical spine injury: midline cervical tenderness, focal neurological deficit, altered mental status, intoxication, or distracting injury 2
- Assess for neurological symptoms: radiculopathy (arm pain, numbness, weakness) or myelopathy (gait disturbance, hand clumsiness, bowel/bladder dysfunction) 1
- Evaluate functional impact: difficulty driving due to limited cervical range of motion, inability to perform work tasks requiring neck movement 3
Imaging Strategy (If Indicated)
Imaging is not routinely necessary for isolated crepitus without trauma history or neurological symptoms. However, if clinical concern exists:
- Start with three-view cervical spine radiographs (anteroposterior, lateral, and open-mouth odontoid views) if trauma is suspected, though these detect only about one-third of fractures visible on CT 2, 4
- CT scan is the gold standard for excluding cervical spine fractures with 88.6% sensitivity, significantly superior to plain radiographs 2, 5
- MRI should be reserved for patients with neurological deficits, suspected spinal cord compression, or when ligamentous injury needs evaluation—MRI can identify injuries missed by CT in symptomatic patients 2, 5
- Flexion-extension radiographs are not recommended as they rarely demonstrate instability not already identified on conventional radiographs and are often inadequate due to limited cervical excursion 2
Conservative Management Approach
For degenerative cervical spine conditions causing crepitus without instability or neurological compromise:
- Avoid prolonged immobilization: Cervical collars should not be used for degenerative conditions as they limit normal proprioceptive input and can cause muscle atrophy (1-3% strength loss per day) 3, 6
- Maintain activity: Bed rest causes bone density to decrease 2% per week and muscle strength to decline 10-15% per week, creating a cascade of complications 3
- Non-operative treatment remains first-line: Medications, physical therapy, and interventional pain injections play important roles before considering surgical options 1
When to Consider Surgical Referral
Surgical evaluation is warranted when:
- Myelopathy develops: Progressive neurological deterioration, gait instability, or loss of fine motor control 1
- Severe radiculopathy: Persistent arm pain with weakness despite 6-8 weeks of conservative management 1
- Documented instability: Dynamic imaging shows pathological motion at cervical segments 7
Critical Pitfalls to Avoid
- Do not dismiss new neurological symptoms: Even with longstanding crepitus, new weakness, numbness, or gait changes require urgent evaluation 1
- Do not over-image: A single lateral cervical radiograph is insufficient to exclude injury in trauma patients, but extensive imaging is unnecessary for isolated degenerative crepitus 2, 8
- Do not prescribe aggressive passive range of motion exercises: These can cause harm and should be performed cautiously within the patient's comfort zone 3
- Recognize that normal crepitus is common: Degenerative cervical spine conditions affect up to two-thirds of the population in their lifetime and are often benign and episodic 1