Paired bones movements

Question 1

SBS Flexion = paired bones ______

Answer 1

ER

“FLEXTERNAL ROTATION”

Question 2

SBS Extension = paired bones ______

Answer 2

IR

Question 3

SBS flexion/extension

Movement of parietal bones

Axis?

Answer 3

1. SBS flexion = ER
   
   1. ​Head widens laterally;
      
      1. Sagittal suture moves inferior;
      2. Temporal articulations moves lateral
2. SBS extension = IR
   
   1. ​Head narrows laterally
      
      1. ​Saggital suture moves superior
      2. Temporal articulations move medially

Sagittal (AP) axis (coronal plane)

Question 4

SBS flexion/extension

Movement of temporal bones

Axis?

Answer 4

• SBS flexion = ER (upper portions/ squamous portion flare out and MP move medially)
• SBS extension = IR (lower portions/MP flare laterally; squamous portion move medially)
• Axis is inferior to to petrous ridge

Question 5

SBS flexion/extension

Movement of frontal bones

Axis?

Answer 5

• SBS flexion – ER:
  
  • lateral sides move anterior/lateral and slightly infeiror
  • glabella moves posterior
• SBS extension – IR:
  
  • lateral sides move posterior/medial and slightly superior;
  • glabella moves anterior
• 2 superior/inferior (vertical) axes = like antennas from each frontal bone

Question 6

Symptoms of parietal bone damage

Question 7

What is the ONLY bone that contacts ALL 4 fontanelles?

Answer 7

Parietal bone

Question 8

What bones does the parietal bone touch?

Answer 8

• 5 other bones
  
  • 1. Frontal
  • 2. Temporal
  • 3. Other parietal
  • 4. Sphenoid
  • 5. Occiput

Question 9

Signs and symptoms of Parietal Bone SD

Answer 9

1. Cranial synostosis: premature closure of sutures– coronal, sagittal, lambdoidal
2. Head pain along a suture that can radiate from any point of restriction.
3. Middle meningeal a. – trauma, giant cell arteritis
4. Head, face and tooth pain – temporal muscle SD, parietosquamosal

Question 10

Parietal bone SD can cause _____ to cause tension HA.

Answer 10

1. Oxipitomastoid
2. Asterion

Question 11

Parietal bone SD can cause _____ to cause temporal HA.

Answer 11

Pterion

Question 12

Sign and symptoms of temporal bone SD

Answer 12

1. TMJ pain
2. Head pain – along a suture (esp occipitomastoid/asterion => migraines; pterion => temporal HA)
3. Neck pain – fx with SCM and other attached muscles
4. Dizziness
5. Ear infections
6. Swallowing/chewing – stylohyoid, TMJ and styloglossus
7. Tinnitus and eustachian tube dysfunction
8. Bell’s palsy association – CN VII

Question 13

IR temporal bone is associated with what type of tinnitis and eustachian tube dysfunction

Answer 13

low roar

swooshing

Question 14

ER temporal bone is associated with what type of tinnitis and eustachian tube dysfunction

Answer 14

High pitched roar

Question 15

What moves the frontal bone during ER

Answer 15

Sphenoid

Question 16

Temporal bone motion is driven by _____, through OM articulation

Answer 16

Occiput

Question 17

Signs and symptoms of frontal bone SD.

Answer 17

1. Focal head pain – along a suture
   
   1. Coronal suture => tension HA
   2. Pterion => temporal HA
2. Global head pain = ⬇︎ primary respiration and flow of CSF when dura teneses at the cribiform plate
3. Frontalis muscle
4. Sinusitis – frontal sinus, secondary to pressure from within
5. Visual problems
6. Anosmia – frontal bone influences cribriform plate

Question 18

Frontal bone SD can affect ______ muscle => the common driver for nerve and suture compression

Answer 18

Frontalis muscle

Question 19

How can frontal bone SD => anosmia?

Answer 19

frontal influences cribiform plate and places tension on nerves

Question 20

What are the 4 fontanelles?

Answer 20

1. Anterior fontanelle (=> bregmna) – intersection of coronal and sagittal sutures
2. Posterior fontanelle (=> lambda)– intersection of lambdoidal and sagittal sutures
3. Sphenoidal fontanelle – Pterion
4. Mastoid fontanelle – Asterion