cervical spine
DESCRIPTION
Cervical Spine. Presented by M.A. Kaeser, DC Spring 2009. Radiographic Anatomy. APOM Dens C1 Lateral masses C1 Posterior arch C1 Anterior arch C1 TPs Atlanto-occipital joint Mastoid air cells C2 spinous process C2 transverse foramen Mandible. Radiographic Anatomy. Lateral view - PowerPoint PPT PresentationTRANSCRIPT
Cervical SpineCervical Spine
Presented by M.A. Kaeser, DCPresented by M.A. Kaeser, DCSpring 2009Spring 2009
Radiographic AnatomyRadiographic Anatomy APOMAPOM
• DensDens• C1 Lateral massesC1 Lateral masses• C1 Posterior archC1 Posterior arch• C1 Anterior archC1 Anterior arch• C1 TPsC1 TPs• Atlanto-occipital jointAtlanto-occipital joint• Mastoid air cellsMastoid air cells• C2 spinous processC2 spinous process• C2 transverse foramenC2 transverse foramen• MandibleMandible
Radiographic AnatomyRadiographic Anatomy Lateral viewLateral view
C1 posterior tubercleC1 posterior tubercleC1 posterior archC1 posterior archC1 lateral massC1 lateral massDensDensC2-C7 bodiesC2-C7 bodiesIVDsIVDsArticular pillarsArticular pillarsFacetsFacetsLaminaeLaminaeSPsSPsSpinolaminar lineSpinolaminar lineTPsTPsSoft tissue space (PLT)Soft tissue space (PLT)Thyroid cartilage and larynxThyroid cartilage and larynxHyoid boneHyoid boneAngle of mandibleAngle of mandibleMastoid air cellsMastoid air cells
Radiographic AnatomyRadiographic Anatomy
http://files.abstractsonline.com/CTRL/12/6/B55/E60/AEE/48C/3B7/51F/1B1/ADD/157/40/a1198_19.JPG
http://www.drkassicieh.com/images/MRI-Cervical-spine.jpg
http://www.jbppni.com/content/figures/1749-7221-2-17-1-l.jpg
Level of C5/6 DiscLevel of C5/6 Disc 1 = SCM1 = SCM 2 = CCA2 = CCA 3 = Thyroid cartilage3 = Thyroid cartilage 4 = Laryngopharynx4 = Laryngopharynx 5 = Piriform recess5 = Piriform recess 6 = Trapezius6 = Trapezius 7 = SP7 = SP 8 = TP8 = TP 9 = C5/6 disc9 = C5/6 disc 10 = Vertebral a.10 = Vertebral a.
Level of C4Level of C4 1 = vertebral artery1 = vertebral artery 2 = mandible2 = mandible 3 = hyoid bone3 = hyoid bone 4 = laryngeal space4 = laryngeal space 5 = ICA5 = ICA 6 = IJV6 = IJV 7 = body C47 = body C4 8 = Spine8 = Spine 9 = Lamina9 = Lamina 10 = SCM10 = SCM
Radiographic AnatomyRadiographic Anatomy APLCAPLC
• SPsSPs• LaminaeLaminae• PediclesPedicles• TPsTPs• Articular pillarArticular pillar• Uncovertebral jointsUncovertebral joints• Costotransverse jointCostotransverse joint• TracheaTrachea• IVFsIVFs• Lung apicesLung apices
http://www.e-radiography.net/technique/spine/spine-
Specific ProblemsSpecific Problems DislocationsDislocations
• Atlantooccipital dislocation (unstable)Atlantooccipital dislocation (unstable)• Facet joint dislocation (unstable)Facet joint dislocation (unstable)
Atlantooccipital DislocationAtlantooccipital Dislocation Caused by complex injuryCaused by complex injury Usually causes deathUsually causes death Causes an increase in Causes an increase in
prevertebral soft tissue widthprevertebral soft tissue width
Facet Joint DislocationFacet Joint Dislocation Three typesThree types
• Subluxed facets, perched facets, locked facetsSubluxed facets, perched facets, locked facets Best seen on lateral viewBest seen on lateral view Step deformity, >3 mmStep deformity, >3 mm Occur secondary to hyperflexion Occur secondary to hyperflexion Disruption of ALL, IVD and Disruption of ALL, IVD and
posterior ligamentsposterior ligaments
http://sfghed.ucsf.edu/Education/ClinicImages/Jump%20facet%20MRI.jpg
FracturesFractures UnstableUnstable
• Flexion TeardropFlexion Teardrop• Hangman’s Hangman’s • Hyperextension fracture dislocationHyperextension fracture dislocation• BurstBurst• Jefferson’sJefferson’s• OdontoidOdontoid
StableStable• Clay Shoveler’sClay Shoveler’s• WedgeWedge• Extension TeardropExtension Teardrop
Unstable FractureUnstable Fracture Flexion Teardrop Flexion Teardrop
• Extremely unstableExtremely unstable• Posterior displacement Posterior displacement
of the vertebral bodyof the vertebral bodyDisruption of all ligaments Disruption of all ligaments and IVDand IVDOften results in anteriorOften results in anteriorspinal cord compressionspinal cord compression
http://faculty.washington.edu/alexbert/MEDEX/Winter/ch264fg8.jpg
http://aser.mypacs.net/aser/repos/aser_repo/viz/full/0/0/2/2137.jpg
Unstable FractureUnstable Fracture Hangman’sHangman’s
• Bilateral C2 pedicle fractureBilateral C2 pedicle fracture• MVAs or hangingsMVAs or hangings• Anterior displacement Anterior displacement
of the anterior part of C2of the anterior part of C2
http://www.spineuniverse.com/displaygraphic.php/4095/shaffrey_16yocervicaltrauma_fig3b-99.jpg
Unstable FractureUnstable Fracture Hyperextension fracture dislocationHyperextension fracture dislocation
http://faculty.washington.edu/alexbert/MEDEX/Winter/ch264fg15.jpg
http://www.radiologyassistant.nl/images/4912b9174ba3fextension-4.jpg
Unstable FractureUnstable Fracture Burst FractureBurst Fracture
• Axial injuryAxial injury• Loss of anterior Loss of anterior
and posterior bodyand posterior bodyheightheight
Bony fragments may Bony fragments may push on the spinal push on the spinal CordCordM/C in mid C/SM/C in mid C/S
http://ajs.sagepub.com/content/32/4/1077/F5/graphic-9.large.jpg
http://www.radiologyassistant.nl/images/thmb_49044098aa1abAfbeelding-9.jpg
Unstable FractureUnstable Fracture Jefferson’s Jefferson’s
• At least two At least two fractures of C1fractures of C1
• Secondary to an Secondary to an axial injuryaxial injury
• DivingDiving• Heavy object Heavy object
http://radiographics.rsnajnls.org/content/vol20/issue3/images/large/g00mc20l16x.jpeg
http://img.medscape.com/pi/emed/ckb/orthopedic_surgery/1230552-1264627-384.jpg
Unstable FractureUnstable Fracture Odontoid FracturesOdontoid Fractures
• Type 1Type 1• Type 2 – most unstableType 2 – most unstable• Type 3Type 3
http://www.nypemergency.org/moxiepix/b2_3.gif
Type IType I
http://download.imaging.consult.com/ic/images/S1933033208734189/gr12a-midi.jpg
Type IIType II
http://www.radiologyassistant.nl/images/4911d5fd8c73bdens1.jpg
Type IIIType III
http://www.radiologyassistant.nl/images/4911d96ff25dbdens5.jpg
Stable FractureStable Fracture Clay Shoveler’sClay Shoveler’s
• Secondary to a flexion injurySecondary to a flexion injury• Avulsion of a piece of SPAvulsion of a piece of SP• M/C in lower C/SM/C in lower C/S
http://www.mypacs.net/repos/mpv3_repo/viz/full/57139/2856961.jpg
Stable FractureStable Fracture WedgeWedge
• Flexion injuryFlexion injury• Compression of Compression of
anterior portionanterior portionof vertebral bodyof vertebral body
http://faculty.washington.edu/alexbert/MEDEX/Winter/ch264fg6.jpg
Stable FractureStable Fracture Extension TeardropExtension Teardrop
• Avulsion of a piece of the Avulsion of a piece of the anteroinferior portion anteroinferior portion of a vertebraof a vertebra
• Often occurs at C2Often occurs at C2
http://www.learningradiology.com/caseofweek/caseoftheweekpix2008/cow302lg.jpg
http://download.imaging.consult.com/ic/images/S1933033207723352/gr1-midi.jpg