3. Stable fractures
•No spinal deformity or neurologic
(nerve) problems.
•Spine can still carry and distribute
weight
•Transverse ligament is intact
Unstable fractures
•Difficult for the spine to carry
and distribute weight.
•Progressing and causing
further damage.
•May also cause spinal
deformity
4.
5. Imaging
Following trauma or complaint of neck pain
Obtain lateral, AP,and odontoid views
Upper cervical spine
transoral X-ray of odontoid process
Cervico-Thoracic junction
C6/7/T1, „Swimmer“, extension of the arms
Statscan
If there is any doubt of fracture, obtain
oblique(45 degress) views and consider CT
6. Additional diagnosticAdditional diagnostic
CT-scanCT-scan
Verified fracture, extent, encroachment, posteriorVerified fracture, extent, encroachment, posterior
complex (B-type !)complex (B-type !)
Suspicious area of trouble, not shown inSuspicious area of trouble, not shown in
conventional X-rayconventional X-ray
MRIMRI
Neurologic deficit without fracture – epiduralNeurologic deficit without fracture – epidural
hematomahematoma
Distraction injuries - posterior complexDistraction injuries - posterior complex
Injuries of ligaments or disc (cervical spine), thereInjuries of ligaments or disc (cervical spine), there
is traumatic disc injury!is traumatic disc injury!
Differentiate old/new fracture (osteoporotic)Differentiate old/new fracture (osteoporotic)
7. Alignment Loss of cervical lordotisAlignment Loss of cervical lordotis
indicatingindicating ligmentous injury or occult fractureligmentous injury or occult fracture
Anterior vertebral line (anterior margin of vertebral
bodies)
Posterior vertebral line (posterior margin of vertebral
bodies
Spinolaminar line (posterior margin of
spinal canal
Posterior spinous line (tips of the
spinous processes)
9. C1#.Jefferson FractureC1#.Jefferson Fracture
► Axial blow to the vertex of the headAxial blow to the vertex of the head
(e.g. diving injury, roof of the(e.g. diving injury, roof of the
vehicle).vehicle).
► fractures occurs at anterior andfractures occurs at anterior and
posteriorposterior
arches of the vertebraarches of the vertebra
► Compression fracture of the bonyCompression fracture of the bony
ring of first vertibraring of first vertibra
► Displacement of lateral massesDisplacement of lateral masses
splitting and transverse ligamentsplitting and transverse ligament
tear.tear.
► Best seen on odontoid viewBest seen on odontoid view
► CT is required to define the extent ofCT is required to define the extent of
fracturefracture
10. TREATMENTTREATMENT
Stability
Intact or broken transverse
ligament and degree of fracture
of the anterior arch
Stable –soft or hard cervical
collar ,traction
Unstable- fixation done
11. C2# ODENTOID FRACTUREC2# ODENTOID FRACTURE
► odontoid fractures -most common upper cervical fractures.odontoid fractures -most common upper cervical fractures.
► Rule of thirds - 1/3- cervical cordRule of thirds - 1/3- cervical cord
1/3- Dens1/3- Dens
1/3- Empty1/3- Empty
► Flexion loadingFlexion loading
► Majority of patients-results in anterior displacement of theMajority of patients-results in anterior displacement of the
dens.dens.
► Extension loading (forward fall onto forhead)Extension loading (forward fall onto forhead)
► In minority of patients-results in posterior displacement ofIn minority of patients-results in posterior displacement of
the dens.the dens.
12. TYPE-ITYPE-I
# through superior portion# through superior portion
Avulsion of Alar ligamentAvulsion of Alar ligament
Tmt: with semirigid collarTmt: with semirigid collar
TYPE-II
# through the base
Hyperextension or hyperflexion
forces
Anterior screw fixation
TYPE-III
# that extends into the body of C2
Mechanically unstable
12 weeks of immobalization
13.
14. C2#.Hangman’s FractureC2#.Hangman’s Fracture
Sudden forceful hyperextension centered just under theSudden forceful hyperextension centered just under the
chinchin
Mainly in deceleration injuriesMainly in deceleration injuries
face or chin strike an unyielding objectface or chin strike an unyielding object
with the neck in extensionwith the neck in extension
# through the pedicle( pars reticularis)# through the pedicle( pars reticularis)
of C2 secondary to hyperextensionof C2 secondary to hyperextension
Best seen on lateral viewBest seen on lateral view
TractionTraction should not be givenshould not be given
Surgery-Surgery-
Reducing subluxation and stabilizing.Reducing subluxation and stabilizing.
ORIF-oblique wiring andORIF-oblique wiring and
screw fixation.screw fixation.
15. Flexion Teardrop Fracture
Most severe fracture of cervical
spine
Unstable #
Due to extreme flexion &
compressive forces
Commonly results from a dive into
a shallow pool of water.
Associated w/ acute anterior
cervical cord syndrome
17. Bilateral Facet Dislocation
Due to extreme hyperflexion
Complete anterior dislocation of the vertebral body.
Associated with a very high risk of cord damage.
Best seen on lateral view
18. Unilateral Facet DislocationUnilateral Facet Dislocation
Due to flexion and rotatoryDue to flexion and rotatory
movementsmovements
Facet joint dislocationFacet joint dislocation
Rupture of the apophyseal jointRupture of the apophyseal joint
ligamentsligaments
Best seen on lateral or oblique viewsBest seen on lateral or oblique views
19. Anterior Subluxation
Due to hyperflexion
Distruption of posterior
ligamentous complex
Signs:
Loss of normal cervical lordosis.
Anterior displacement of the
vertebral body.
Fanning of the interspinous
distance.
20. Clay Shoveler’s Fracture
# of Spinous process
C6 to T 1
Best seen on lateral view
‘Ghost sign’on AP view
( double spinous process of C6 or
C7)
21. Dynamic flouroscopy
Ligamentous or spinal cord injuries
No Radiological abnormality.
Altered mental status after trauma.
No bony involvement
1. Anterior vertebral line (anterior margin of vertebral bodies) 2. Posterior vertebral line (posterior margin of vertebral bodies) 3. Spinolaminar line (posterior margin of spinal canal) 4. Posterior spinous line (tips of the spinous processes) These lines should follow a slightly lordotic curve, smooth and without step-offs. Any malalignment should be considered evidence of ligmentous injury or occult fracture, and cervical spine immobilization should be maintained until a definitive diagnosis is made.
Soft tissue swelling May be due to hematoma from a fracture
Mechanism: axial blow to the vertex of the head (e.g. diving injury).four-part break that fractures the anterior and posterior arches of the vertebra depending on if the fracture is stable or unstable, defined by an intact or broken transverse ligament and degree of fracture of the anterior arch
Mechanism: extreme flexion of head and neck without axial compression.
Mechanism: simultaneous flexion and rotation
It may be difficult to diagnose because muscle spasm may result in similar findings on the radiograph. Subluxation may be stable initially, but it associates with 20%-50% delayed instability. Flexion and extension views are helpful in further evaluation. Mechanism: hyperflexion of neck