Coupling/ Types of Movement Flashcards
What are some causes of Upper Cx instability?
1) Incompetence of odontoid process
2) Incompetence of Transverse Atlantal Ligament
What are some Congenital factors that could lead to Cx Instability?
Odontoid Process:
- Anatomical variance: seperate odontoid
- Free apical segment
- Agenesis of: base, apical segment or whole odontoid process
In medicine, agenesis refers to the failure of an organ to develop during embryonic growth due to the absence of primordial tissue.
Transerve Atlantal Lig:
- Downs Syndrome
- Idiopathic (spontaneous disease of unknown origin)
What are some Neoplastic factors that could lead to Cx Instability?
Odontoid Process:
- Primary Tumor of the bone
- Secondary Metastasise
What are some Traumatic factors that could lead to Cx Instability?
Odontoid Process:
- Acute bone injury (#)
- Chronic Bony Change
Transvere Atlantal Lig:
- Acute ligament damage associate with #
- Chronic Ligamentous Damage (head flicks)
What are some Inflammatory factors that could lead to Cx Instability?
Odontoid Process:
- Osteomyelitis
Transvere Atlantal Lig:
- Bacterial/Viral Infection
- Rheumatoid Arthritis
- Ankloysing Spondylitiis
What are the four cardinal signs of Upper Cx Instability?
- Overt loss of balance due to head/neck movements
- Upper or Lower Limb Paraesthesia, either constant or reproduced by passive/active neck movements
- Facial Lip Paraesthesia, reproduced by passive or active neck movements
- Nystagmus in relation to active/passive neck movements
What are the two tests that you can perform for Upper Cx Instability?
1) Sharp-Purser: Transverse Atlantal Lig
2) Alar Lig Stress Test
What are you looking for in these tests?
1) Any of the four cardinal signs
2) Feeling for lax end-feel
What is the normal coupling motion of C0-C1?
Type 1
What is the facet apposition locking of C0-C1?
Type 2
What is the normal coupling motion of C1-C2?
Complex: Primarily Rotation
What is the facet apposition locking of C1-C2?
Not applicable
What is the normal coupling motion of C2-C7?
Type 2
What is the facet apposition locking of C2-C7?
Type 1
What type of HVLA is the OA joint?
Myofascial Ligamentous
You facet apposition lock C1 and below