Flashcards in Biomechanics of the Adjustment Deck (47)
According to DD, what is the cause of disease?
Impingement that causes pressure on ONE side of the nerve only
According to DD, what are the only two things that can cause a pinched nerve?
2 extreme displacement
Where did BJ go to prove the debate on whether subluxations can cause pressure upon nerves by working on cadavers?
The spinal nerve rootlets of what area lack the epieneural covering as they exit the IVF?
The spinal nerve rootlets of the interpedicular region are more susceptible to what situations?
DRGs are found where and are especially susceptible to what kind of forces?
Interpedicular region; compressive forces
Dorsal NRs in what state respond more vigorously to mechanical deformation?
Chronically injured ones
Is it necessary for spinal NRs to be directly compressed by bony structures to develop pathologic dysfunction?
What other structures within the IVF can contribute to mechanical stress that affects the nerve tissue?
Arteries, veins, recurrent meningeal nerve, lymphatics, fat, areolar connective tissue
The density of what structures in the soma and initial segment of the DRG cells is relatively high during nerve compression, and what does that indicate?
Sodium ion channels; indicates unusual excitability
Which are more susceptible to the effects of mechanical compression: DRs and DRGs or peripheral nerves?
DRs and DRGs
Does the orthoneurologic exam or biomechanical analysis assess the state of the pathologic tissue changes and also aid in determining the prognosis?
Does the orthoneurologic exam or biomechanical analysis determine the therapeutic procedures that should be used and the treatment schedule?
According to Faye, what are the two ways in which a chiropractor should examine a person to arrive at a double diagnosis?
Orthroneurologic manner and biomechanical approach
What are the 3 categories of the vertebral subluxation complex?
1 Mechanical components
2 Neurobiology components
3 Inflammatory-vascular components
Which category of the VSC includes derangements or disorders of the somatic structures of the body that lead to altered joint structure and function?
What kind of actions provide the best opportunity for optimal healing following a mechanical injury?
Aggressive early care and restoration of motion
Everything discussed about DD and BJ's work on nerve compression/impingement falls under which category of the VSC?
What kinds of injury can initiate the inflammatory and vascular components of the VSC?
1 joint injury
2 chronic mechanical join derangement
3 joint immobilization
What are the 3 scientifically accepted facts of the VSC?
1 homeostasis is necessary
2 nervous system = prime controller of homeostasis
3 dysfunction can occur via faulty MSK relationships
What is the most commonly applied chiropractic therapy and is the key distinguishing feature of chiropractic practice?
How many segmental motion units or spinal joints are meant to be influenced by a chiropractic adjustment?
Does a single vertebra or an articulation itself become subluxated/fixated?
The articulation (bones do not subluxate)
How many joints make up a motion unit?
3-joint complex (IVD surrounded by 2 adjacent vertebrae from anterior joint and 2 zygapophyseal joint form posterior joints)
Which is indicative of an acute subluxation: hyperactivity/irritability or hypoactivity/compression?
Hyperactivity/irritability (spasm, warmth, hyperesthesia, visceral hyperfunction)
Which is indicative of a chronic subluxation: hyperactivity/irritability or hypoactivity/compression?
Hyperactivity/compression (weakness, coolness, numbness, visceral hypo function, MSK degeneration)
Why is it possible to have an asymptomatic site of fixation and a symptomatic joint elsewhere?
Other joint is a compensating hyper mobile joint (over expressed)
Which two stages of motion make up the zone of physiologic movement?
Active and passive ROM
Which gives information on muscles and which gives information on ligaments/capsules: passive or active ROM?
Active ROM = muscles
Passive ROM = ligaments/capsules