cranium and facial bones marilyn rose

Cranium and Facial Cranium and Facial BonesBonesMarilyn RoseMarilyn Rose

http://www.gomediazine.com/wp-content/images/2008/09/free-skull-photos-preview.jpg

Ground RulesGround Rules

This room is all we have. We need to find a way to make it work, so we can do what we're here to do.

1. Absolutely no food or drink consumption in the classroom.

2. No open liquid containers in the classroom. They must be kept outside.

3. No conversing during lecture.

4. If you can't hear the instructor or another student during lecture or question and answer, please politely say so.

5. If you're sitting in the back and having difficulty hearing, move to the front of the classroom next time.

6. Dial down your drama. If you're anxious about this class, find something constructive to do about it.

CraniumCranium 8 bones8 bones

OccipitalOccipital Temporal-Temporal- SphenoidSphenoid EthmoidEthmoid Parietal- Parietal-

vertexvertex FrontalFrontal

http://www.voxel-man.de/3d-navigator/brain_and_skull/images/bs_ct-browser-englisch.jpg

http://www.exploringnature.org/graphics/anatomy/skulls_w_text.jpg

Occipital ProtuberanceOccipital Protuberance

http://img.medscape.com/pi/emed/ckb/radiology/336139-389714-1939.jpg

http://www.theodora.com/anatomy/images/image194.gif

internal

external

Temporal BoneTemporal BonePetrous portionPetrous portion

• EAM

Sphenoid BoneSphenoid Bone

http://img.tfd.com/MosbyMD/thumb/sphenoid_bone.jpg http://www.eurorad.org/mediafiles/eurorad/0000001070/000002_text.jpg

Level of dorsum sellae=

http://www.mans.eun.eg/FacMed/arabic/DAW/CourseImages/sag_mri_2za.jpg

http://m.blog.hu/ke/kepalkotas/image/sella.jpg

A square portion of bone on the body of the sphenoid posterior to the sella turcica or hypophysial fossa

Ethmoid BoneEthmoid Bone

http://img.tfd.com/MosbyMD/thumb/ethmoid_bone.jpg

Blunt Trauma-most common cause of A deviated septum Any impact can potentially detach perpendicular plate of ethmoid bone from nasal septum wall, allowing septum to deviate from one side to other.

Parietal BoneParietal Bone

http://www.cyberounds.com/assets/07/90/790/figure1.jpg

http://www.neurographics.org/3/1/2/images/Fig2.jpg

Frontal BoneFrontal Bone

http://www.face-and-emotion.com/dataface/anatomy/media/frontalbone.jpg

http://2.bp.blogspot.com/_fBQVVpFhTQs/Sjk7DY4pljI/AAAAAAAAAvE/IYrpGnSa4rU/s320/frontal-sinus-fx-1.jpg

The patient was admitted to the emergency room for polytrauma with severe cranioencephalic trauma with fracture and a depressed fronto-orbital fracture with external communication

14 Facial Bones14 Facial Bones Nasal 2xNasal 2x Lacrimal 2xLacrimal 2x Maxilla 2xMaxilla 2x PalatinePalatine Zygoma 2xZygoma 2x Inferior nasal Inferior nasal

conchae 2xconchae 2x Vomer- Vomer-

Where is it??Where is it?? mandiblemandible

http://www.asnr2.org/neurographics/8/2/60/sinusanatomy/axial/apSkull.jpg

Paranasal SinusesParanasal Sinuses EthmoidEthmoid MaxillaryMaxillary SphenoidSphenoid FrontalFrontal

http://www.billcasselman.com/paranasal_sinuses_ethmoid_eye_sockets_sphenoid_maxillary.jpg

http://www.szote.u-szeged.hu/radio/szem/fog2a1.gifhttp://scannermurcia.es/imagenes/estudios/escaner/gallery3.jpg

Temporomandibular Temporomandibular JointJoint

Hinge of masticactionHinge of masticaction

http://www.urmc.rochester.edu/smd/Rad/neuroimages/TMJ15.jpg

TMJTMJ

ClosedClosed

http://radiopaedia.org/uploads/radio/0000/3817/TMJ_0002_gallery.jpg

Open

TMJ-@ LPCHTMJ-@ LPCH

CT-guided imaging CT-guided imaging at LPCH for at LPCH for treatment of treatment of juvenile idiopathic juvenile idiopathic arthritis: The arthritis: The aarrowrrow shows the trajectory shows the trajectory of the needle for of the needle for placement of steroid placement of steroid medication into the medication into the temporomandibular temporomandibular

jointjoint. .

OrbitOrbit

1. Frontal bone 2. Ethmoid bone 3. Palatine bone 4. Zygomatic bone 5. Lacrimal bone 6. Maxillary bone

http://anatomy.uams.edu/anatomyhtml/graphics/rsa2p4.gif

http://media.photobucket.com/image/anatomy%20of%20eye%20and%20muscles/trimurtulu/Eye.jpg

OrbitOrbit

What seven bones make up the orbit?What seven bones make up the orbit? frontal, sphenoid, ethmoid (cranium)frontal, sphenoid, ethmoid (cranium) Lacrimal, maxillary, palatine and zygomatic Lacrimal, maxillary, palatine and zygomatic

(facial)(facial) The posterior obit has a what canal?The posterior obit has a what canal?

Optic- optic nerveOptic- optic nerve A blow-out fracture can cause diplopia, A blow-out fracture can cause diplopia,

what does that mean?what does that mean? Floor of orbit, herniation of orbital contents= Floor of orbit, herniation of orbital contents=

doublevisiondoublevisiondoublevisiondoublevisionhttp://e-radiography.net/ibase8/Skull/thumbs/Skull_frx_orbit_ct.jpg

Name 5 anatomic structures you Name 5 anatomic structures you can see.can see.

http://farm4.static.flickr.com/3122/2280819592_7a60701210.jpg

Ethmoid sinus

orbitvertex

EAM

TMJ

What is What is wrongwrong??

Rt Frontal bone- axial- orbital contents in maxillary sinus

What level is this?What level is this?

Petrous Ridge

What are the points at the What are the points at the posterior aspect?posterior aspect?

Internal/External Occipital Protuberance

What is the foreign object? What What is the foreign object? What is now communicating with the is now communicating with the

external environment?external environment?

http://www.firearmsid.com/Feature%20Articles/042002/SkullCT.jpg

Bullet

Frontal Sinus open

to external environment.

What is this What is this bone?bone?

Parietal Bone Sphenoid

Where is the fracture?

Describe these two views.Describe these two views.

http://www.powerpak.com/courses/10132/Figure3.jpg

http://www.ispub.com/ispub/ijorl/volume_4_number_1_37/pencil_in_the_nose/pencil-fig3.jpg

Axial- Air/ Fluid levels in the sinus

Pencil- Nasal cavity, ethmoid, sphenoid sinus with air/fluid (no CSF leak)

What is wrong What is wrong here?here?

CSF is in this space= Normal

http://www.atlaschiro.com/case_studies.htm

Medulla and Cerebellar tonsils in foramen magnum= Chiari 1 malformation- Spina Bifida causing herniation of medulla inferior.

Frontal Sinus

Sphenoidal Sinus

Pons

Optic Nerve

Mastoid Air Cells

1 Frontal Sinus1 Frontal Sinus 2 Ethmoid 2 Ethmoid

SinusSinus 3 Sphenoid 3 Sphenoid

SinusSinus 4 Maxillary 4 Maxillary

SinusSinus

1

23

4

1 Sphenoid Sinus1 Sphenoid Sinus 2 Cribiform Plate2 Cribiform Plate

1 1

2

Name the structures

1 Maxillary sinus1 Maxillary sinus 2 Frontal sinus2 Frontal sinus 3 Ethmoid sinus3 Ethmoid sinus

1 1

2

3

2

Before Multiplanar reconstruction the 2 planes used to ACQUIRE Sinus images were AXIAL and CORONAL planes