Paired Bones Flashcards
What is the cranial motion of the occiput, sphenoid, ethmoid, and vomer
Rotate about a transverse axis
Flexion paired with inhalation
Extension paired with exhalation
What are the paired bones of the cranial vault and temporal
Frontal, parietal, temporals
How do the paired bones of the cranial vault and temporals move
Rotate externally during cranial flexion
Paired bones of the face
Maxilla, palatines, and zygomatic
How do the paired bones of face move
Rotate externally during cranial flexion
What are the 5 bones that the parietal bone articulates with
Occiput, frontal, sphenoid, temporal, opposite parietal
Upper temporal ridge
Attachment of temporal fascia
Lower temporal ridge
Origin of the temporalis muscle
Temporalis fossa
Filled by the temporal muscle
Sagittal sulcus
A groove along the sagittal suture in which the sagittal sinus runs
Groove for middle meningeal artery
Anterior and posterior
Transverse sine
Lateral part of groove carries the marginal insertion for he tentorium cerebelli
Bevel change
Along coronal and lambdiodal articularions
Bevel change midway along sagittal and lambdoidal sutures creates a __ for the AP axis of motion (coronal plane)
Hinge
External rotation of the parietal occurs with SBS ___
Flexion stewie head
Deceive external rotation parietal
Inferior borders move laterally
Superior borders move medially and inferiorly
Pterion anterior and squamous sutures move laterally
Sagittal suture moves slightly inferiorly
External rotation parietals
Sagittal articulation moves inferiorly
Temporal articulation moves laterally
Cranium widens laterally
Internal rotation parietalsagittal articulation moves superiorly
Temporal articulation moves medially
Cranium narrows laterally
Ok
Cranial synostosis
Premature closure of the sutures -coronal sagittal lambdoidal
Head pain
Pain along suture
OM and asterion
Often tension headache
Pterion
Temporal headaches
Parietosquamous
Uh
Middle meningeal arrtery
Trauma
Giant cell arteritis: diagnosed by contrast enhanced high resolution MRI
Head face and tooth pain
Temporal SD TrP
Sagittal synostosis
Most common synostosis
Premature sagittal suture fusion
Restricts transverse growth
Look at pic of head
Lambdoidal synostosis unilateral
Flatten back of head on affected side
And compensatory growth of mastoid process on same side
Tilt in cranial base
Positional deformational plagiocephaly
Ear on affected side is back and toward fused suture
Temporal bone squamous portion
Zygomatic process -facial injury affects temporal bone
Petroleum temporal bone
Otovestibular organ
Eustachian tube exit is between the sphenoid and temporal bones
Border or foramen lacerum (with sphenoid)
Attach of tentorium
Encloses the internal carotid
Lateral part of the jugular foramen
Styloid process
New born temporal bones
No mastoid process
Eustachian tube
Exits petroud portion and becomes the medial was. Of the middle ear
Internal rotation of temporalis will place pressure on Eustachian tube (high pitches tinittus)
External toyation low roaring sound or low pitch
Internal rotation temporals
High pitched as place pressure on Eustachian tube
External rotation temporal bone
Low roaring sound or low pitched tinnitus
Temporal bone goes into __ ___ with SBS flexion
External rotation
Describe temporal bone external rotation
Squamous portion moves laterally
MP moves medially
Temporal bones moves into __ __ with SBS extension
Squamous portion moves medially
Zygomatic process more prominent
MP moves laterally
Temporal bone motion is driven by the __ through the ___ articulation
Occiput
OM
TMJ pain
Temporal bone SD
Head pain temporal one
Pain along suture
OM and anterior-tension headache
Pterion-temporal headaches
Parietosquamous
Neck pain temporal bone
SCM and other muscles
Other temporal bone signed of Sd
Dizzy, ear infection, swelling and chewing, tinnitus, Bell’s palsy
Swallowing and wheezing
TMJ, stylohyoid, styloglossus
Tinnitus and Eustachian tube dysfunction
Internally rotated temporal associated with low road
Externally rotated temporal associated with high pitch
What bones do frontal bones articulate
Parietal, sphenoid, ethmoid, lacrimal, maxilla, nasal, zygoma
Axis frontal bones
Metopic has hinge like axis
Coronal plane motion
Moves from center of orbital roof through frontal eminence
Motion frontal cones
IR ER
ER frontal bone during SBS ___
Flexion
Describe frontal bone ER
Lateral side moves anterior/lateral and slightly inferior, labella moves posteriorly
Frontal bone __ happend with SBS extension
IR
Describe IR frontal bone
Lateral side moves posterior/medial and lightly superior, labella moves anteriorly
__ moves the frontal during external rotation
Sphenoid
Head pain frontal
Along suture
Coronal-tension headache
Pterion-temporal headaches
Head pain frontal
From diminished primary respiration and CSF flow due to increased dural tension at cribriform plate
Organ signs of temporal SD
Sinusitis, visual problems (double vision), anosmia (frontal influences cribriform)
Frontalis muscle Trp/TP
Bicoronal synostosi
Fusion both coronal sutures leads to bracyephaly
Causes restriction of growth of the anterior fossa resulting in a shorter and wider than normal skill
Compensatory vertical growth (turricephaly)
Seen in crouzon, Alpert sathre-
Unicoronal synostosis
Premature fusion of a dingle coronal suture leads to head shape called anterior plagiocephaly.
Restricted anterior growth of skull , involving the top of the skull as well as the cranial base
This causes deformities of the face, ear, nose and forehead
Affected forehead is flat with te contralateral side move forward
Affected side ear is also more forward
Face has C shape
Facial twist
Base of noes to the affected side
Facial deformity differentiated anterior plagiocephaly from positional deformational plagiocephaly
