Immediate Cervical Spine Imaging is Mandatory
This athlete requires urgent cervical spine imaging with CT or MRI to rule out structural cervical injury—the palpable bump at the base of the neck combined with persistent pain 5 days post-injury raises serious concern for fracture, ligamentous injury, or other structural pathology that could lead to catastrophic outcomes if missed.
Critical Red Flags Present
This case presents multiple concerning features that demand immediate structural evaluation:
- Loss of consciousness during initial injury - indicates significant force transmission and raises concern for more severe intracranial or cervical injury 1
- Palpable bump at base of neck - suggests possible fracture, subluxation, or soft tissue hematoma
- Persistent neck pain at 5 days - normal concussion symptoms typically resolve in 7-10 days, but structural cervical pathology does not self-resolve 1
- Ongoing nausea - could represent either concussion or cervical pathology, as both share overlapping symptoms 2
Algorithmic Workup Approach
Step 1: Immediate Imaging (Do Not Delay)
Obtain cervical spine CT with 3D reconstruction immediately, as this is the gold standard for detecting fractures in pediatric/adolescent athletes 3. The presence of a palpable abnormality makes clinical clearance insufficient.
- If CT shows fracture or malalignment → immediate neurosurgical/orthopedic spine consultation
- If CT is negative but symptoms persist → proceed to cervical MRI to evaluate for:
- Ligamentous injury (not visible on CT)
- Disc herniation
- Spinal cord injury without radiographic abnormality (SCIWORA) - particularly relevant in young athletes 3
- Soft tissue hematoma
Step 2: Detailed Physical Examination
While awaiting imaging, perform focused cervical examination:
- Palpate the entire cervical spine for step-offs, tenderness, muscle spasm
- Document the exact location and characteristics of the palpable bump (spinous process level, midline vs. paraspinal, mobile vs. fixed)
- Assess neurologic function: motor strength in all extremities, sensation, reflexes, Hoffman's sign, Babinski
- Cervical range of motion testing - but DO NOT force movement if significant pain or neurologic symptoms present 4
- Perform cervical-specific tests to differentiate cervicogenic from vestibular symptoms:
- Cervical joint-reposition error test
- Smooth-pursuit neck-torsion test
- Physical examination of cervical facet joints 2
Step 3: Differentiate Concussion from Cervical Pathology
The overlapping symptoms between concussion and cervical injury make this distinction critical 2, 5. Key considerations:
- Neck pain is present in only 15% of concussions but predicts longer recovery (median 12-13 days longer for return to play) 5
- Cervicogenic symptoms can completely mimic concussion including headache, dizziness, visual disturbances, and cognitive fog 6
- The palpable abnormality strongly suggests primary cervical pathology rather than pure concussion
Step 4: Risk Stratification
This athlete falls into high-risk category based on:
- LOC during injury (if >30 seconds, indicates more significant intracranial injury risk) 1
- Structural finding on examination (palpable bump)
- Symptoms persisting beyond typical 7-10 day window for simple concussion 1
Common Pitfalls to Avoid
- Do not assume this is "just a concussion" - the palpable neck abnormality changes everything and demands structural evaluation
- Do not rely on normal neurologic exam alone - SCIWORA can occur with completely normal initial neurologic findings 3
- Do not allow return to any activity until structural pathology is definitively ruled out - catastrophic spinal cord injury can occur with seemingly minor subsequent trauma 7
- Do not miss ligamentous injury - CT may be normal but MRI reveals unstable ligamentous disruption requiring surgical stabilization 7
Concurrent Concussion Management
While evaluating cervical pathology, maintain concussion precautions 1:
- Complete physical and cognitive rest until asymptomatic
- No return to play same day - already 5 days out, so not applicable here
- School accommodations: shortened day, reduced workload, extra time for assignments
- Avoid screens, loud music, driving if symptoms worsen with these activities
Disposition Decision Tree
If imaging shows structural injury → Spine specialist referral, possible immobilization, surgical evaluation
If imaging is completely normal → Likely cervicogenic concussion or cervical strain:
- Consider physical therapy targeting cervical dysfunction 6
- Continue concussion protocol
- Re-evaluate in 1 week; if no improvement, consider referral to concussion specialist 1
If any neurologic deficits develop → Emergency department transfer with cervical spine precautions
The presence of a palpable abnormality at the base of the neck is not a normal finding in simple concussion or cervical sprain and mandates structural imaging before any consideration of return to activity.