4. Age variation
<8 years are susceptible to higher cervical injuries (C1-C3) because of:
1. Larger heads than bodies
2. Position of C-spine fulcrum
3. Weaker cervical muscles
4. Increased laxity of ligaments
5. Immature vertebral joints
8. Evaluation
Symptoms:
◦ Classic triad of: local pain, muscle spasm, and decreased range of motion of
the neck.
◦ Also may complain of transient or persistent paresthesia or weakness.
◦ A retrospective review of 72 previously normal children with cervical spine
injury found that all those with asymptomatic injuries had both a high-risk
injury mechanism and a distracting injury.
◦ “Burning hand syndrome”
“Neck immobilization should be maintained during evaluation and
management”
BAKER ET A, AM J EMERG MED. 1999;17(3):230.
9. Evaluation
Physical Examination:
◦ Vital signs, Neck exam and
Neurologic exam.
In toddlers and infants with minor
trauma and normal neurological
exam; palpate C-spine and assess
ROM. If normal, clinically cleared.
10. NEXUS criteria
1. No cervical midline tenderness
2. No focal neurological deficit
3. No intoxication
4. Normal alertness
5. No painful distracting injuries
34,069 trauma victims in 21 nation-wide Emergency departments had 99%
sensitivity for C-spine injuries and 99.6% for clinically significant C-spine
injuries in adults.
HOFFMAN ET AL, N. ENGL. J. MED. 2000;343:94-9
11. Limitations in Pediatric
3,065 children were involved, 30 had C-spine injuries.
Sensitivity 100% , Specificity 19.9%.
None of the children studied was younger than 2 years, and only 817 (27%)
were younger than age 8 years .
PEDIATRICS 2001;108:E20
12. Further studies
Single-center, 20-year review applied the NEXUS criteria to 190
children with significant cervical spine injury found that the criteria
were 94% sensitive among children aged less than 8 years and 100%
sensitive in those greater than age 8 years.
A Pediatric Emergency Care Applied Research Network (PECARN)
study found that the NEXUS criteria were 83% sensitive among 539
children with spinal injury who presented to the emergency
department. Of the 90 children missed by the NEXUS criteria, 58 (64%)
were younger than 8 years of age.
GARTON ET AL, NEUROSURGERY 2008;62:700-8
LEONARD ET AL, ANN EMERG MED 2011 AUG;58(2):145-55
14. Canadian C-spine vs. NEXUS
Canadian C-spine NEXUS
Sensitivity 99.4% 90.7% P<0.001
Specificity 45.1% 36.8% P<0.001
Radiography rates 55.9% 66.6% P<0.001
The Canadian C-spine Rule would have missed 1 patient and the NEXUS
would have missed 16 patients with important injuries.
But, both are not meant for pediatric population.
STIELL ET AL, N ENGL J MED 2003; 349:2510-2518
15. Trauma Association of Canada
CHUNG ET AL, TRAUMA ASSOCIATION OF CANADA PEDIATRIC SUBCOMMITTEE NATIONAL PEDIATRIC CERVICAL SPINE EVALUATION
PATHWAY: CONSENSUS GUIDELINES. J TRAUMA 2011
16. Trauma Association of Canada
CHUNG ET AL, TRAUMA ASSOCIATION OF CANADA PEDIATRIC SUBCOMMITTEE NATIONAL PEDIATRIC CERVICAL SPINE EVALUATION
PATHWAY: CONSENSUS GUIDELINES. J TRAUMA 2011
17. Radiological evaluation
Children with suspected cervical spine injury based on history or physical
examination must undergo radiologic evaluation (Cross-table lateral, AP
and when obtainable open-mouth odontoid).
18. Indications
High risk-mechanism:
◦ High speed motor vehicle collision, bicycle injury, diving or other activity with
hyperextension or hyperflexion of neck, falls greater than body height, and
other acceleration-deceleration injuries of the head.
Multiple system with severe injuries
Distracting pain
Injury above clavicle
Altered mental status
Neck pain, tenderness or limitation of movement
Acute neurological deficit
19. C-spine xrays
• Coverage
• Alignment
• Disc spaces
• Prevertebral soft tissues
• Edge of image
Anterior vertebral line
Posterior vertebral line
Spinolaminar line
21. C-spine xrays
• This view is considered
adequate if it shows the
alignment of the lateral
processes of C1 and C2 (red
circles)
• The distance between the peg
and the lateral masses of C1
(asterisks) should be equal on
each side
23. Flexion / Extension views
If Normal plain films AND No neurological deficit AND continued neck pain
AND can actively flex/extend neck for examination.
24. Efforts to reduce radiation
A simple decision instrument based on clinical criteria can help
physicians to identify reliably the patients who need radiography of the
cervical spine after blunt trauma. Application of this instrument could
reduce the use of imaging in such patients.
The NEXUS decision instrument performed well in children, and its use
could reduce pediatric cervical spine imaging by nearly 20%. However,
the small number of infants and toddlers in the study suggests caution
in applying the NEXUS criteria to this particular age group.
HOFFMAN ET AL, N ENGL J MED. 2000;343(2):94.
VICCELLIO ET AL, PEDIATRICS. 2001;108(2):E20.
25. More efforts
CSI in patients younger than 3 years is uncommon. Four simple clinical
predictors can be used in conjunction to the physical examination to
substantially reduce the use of radiographic imaging in this patient
population.
The protocol used has been effective in detecting cervical spine
injuries in noncommunicative children after trauma. The combination of
clinical information and radiographic studies is essential for safely
clearing the cervical spine in these complex situations. Clearance of the
cervical spine without CT or MR imaging studies is possible in the
majority of cases, even in very young patients.
PIERETTI-VANMARCKE ET AL, J TRAUMA. 2009;67(3):543.
ANDERSON ET AL, J NEUROSURG PEDIATR. 2010;5(3):292.
26. Indications for CT C-spine
Lower or upper C-spines not visualized on plain films
Abnormal or suspicious C-spine on plain films
Suspicion of injury despite normal plain cervical radiographs
As part of initial evaluation of severe head trauma (GCS ≤12) instead of
plain films
CHUNG ET AL, TRAUMA ASSOCIATION OF CANADA PEDIATRIC SUBCOMMITTEE NATIONAL PEDIATRIC CERVICAL
SPINE EVALUATION PATHWAY: CONSENSUS GUIDELINES. J TRAUMA 2011; 70:873.
27. Indications for MRI
Children with an abnormal neurologic examination and those requiring
imaging of the soft tissues of the spinal column and spinal cord
Patients with normal plain films but persistent concern for neurologic
injury based upon history
Patients with prolonged loss of consciousness in whom cervical spine
cannot be cleared by 24 to 72 hours post injury
CHUNG ET AL, TRAUMA ASSOCIATION OF CANADA PEDIATRIC SUBCOMMITTEE NATIONAL PEDIATRIC CERVICAL
SPINE EVALUATION PATHWAY: CONSENSUS GUIDELINES. J TRAUMA 2011; 70:873.
28. Real life cases
7 year old girl cheerleader, fell
from 4 meters on the back of her
head and had loss of
consciousness. C/O tingling
sensation at her arms.
29. Case 2
14 year old involved in a fight and
was hit with a stick to his forhead.
C/O multiple facial fractures
30. Case 3
11 year old boy on a bicycle not
wearing helmet, smashed a phone
booth and fell with severe orbital
swelling.
31. Case 4
1 year and 6/12 old girl fell from
2nd floor balcony to the street.
Unwitnessed. Crying from neck
pain.
32.
33.
34. Take home message
The patient's ability to walk does not exclude cervical spine injury.
Immobilization should be maintained until clearance.
Spinal cord injury can happen without radiological evidence.
Cervical spinal injury (CSI) occurs in about 1% to 1.5% of children evaluated following blunt trauma. The majority of these injuries are in older children; < 5% of CSIs are in children aged < 2 years.
The head circumference of a child reaches 50 percent of adult size by two years of age; in contrast, the chest circumference reaches 50 percent of adult size by eight years of age.
progresses caudally from C2-3 at birth to C5-6 at eight years of age.
greater mobility of the upper cervical spine.
horizontally inclined articulating facets that facilitate sliding of the upper cervical spine.
Down syndrome (approximately 15 percent have atlantoaxial instability)
Morquio syndrome (mucopolysaccharidosis IV), which is associated with hypoplasia of the odontoid
Klippel-Feil syndrome (congenital fusion of variable numbers of cervical vertebrae and associated defects including scoliosis, renal anomalies, elevated scapula (Sprengel deformity), congenital heart disease, and deafness)
Larsen syndrome, which may have associated cervical vertebrae hypoplasia and is otherwise characterized by multiple joint dislocations, flat facies, and short fingernails.
can occur through flexion, extension, vertical compression, rotation, or a combination of these.
Most spinal cord injuries result from direct compression or disruption of the cord by fracture fragments or subluxed vertebrae.
Hyperflexion injuries are the most common and may cause wedge fractures of the anterior vertebral body with disruption of the posterior elements
Hyperextension injuries may cause compression of the posterior elements and disruption of the anterior longitudinal ligament. An example is the hangman's fracture of the posterior neural arch of C1 or the pedicles of C2
Axial loading may cause burst or comminuted fractures of the arches of C1 in the upper cervical spine or of the vertebral bodies in the lower cervical spine
Rotational injuries may cause fracture or dislocation of the facets
Chin trauma may provide a clue to cervical spine injury since the force of injury may be transmitted to the jaw and cervical spine.
The history should include the presence of symptoms at any time after the injury, even if they have resolved.
Transient burning dysesthesias in the hands and fingers may indicate hyperextension of the cervical spine with central cord contusion.
Awake, alert, GCS 15
Meet NEXUS criteria and moveflexion, extension and 45 degrees rotation.
Unconcious, decreased LOC<15
Coverage - All vertebrae are visible from the skull base to the top of T2 (T1 is considered adequate)
- If T1 is not visible then a repeat image with the patient's shoulders lowered or a 'swimmer's' view may be necessary
Alignment - Check the Anterior line (the line of the anterior longitudinal ligament), the Posterior line (the line of the posterior longitudinal ligament), and the Spinolaminar line (the line formed by the anterior edge of the spinous processes - extends from inner edge of skull)
Disc spaces - The vertebral bodies are spaced apart by the intervertebral discs - not directly visible with X-rays. These spaces should be approximately equal in height
Pre-vertebral soft tissue - Some fractures cause widening of the pre-vertebral soft tissue due to pre-vertebral haematoma
- Normal pre-vertebral soft tissue (asterisks) - narrow down to C4 and wider below
- Above C4 ≤ 1/3rd vertebral body width
- Below C4 ≤ 100% vertebral body width
Note: Not all C-spine fractures are accompanied by pre-vertebral haematoma - lack of pre-vertebral soft tissue thickening should NOT be taken as reassuring
Edge of image - Check other visible structures
Coverage - The AP view should cover the whole C-spine and the upper thoracic spine
Alignment - The lateral edges of the C-spine are aligned (red lines )
Bone - Fractures are often less clearly visible on this view than on the lateral
Spacing - The spinous processes (orange) are in a straight line and spaced approximately evenly
Soft tissues - Check for surgical emphysema
Edges of image - Check for injury to the upper ribs and the lung apices for pneumothorax