OMM IV Exam I Cranial Flashcards
Concussions: ______ is a brain injury and is defined as a complex patho-physiological process affecting the brain, induced by biomechanical forces.
Concussion
*mild, traumatic brain injury
Concussions: Concussion is caused either by a direct blow to the head, face, neck or other on the body with an impulsive force that is transmitted to the head.
True/False - It typically results in rapid onset of short-lived impairment of neurological function that resolves spontaneously.
True
- self-limiting
- may evolve over minutes to hours
**CT, MRI usually normal
COncussions: Acute clinical symptoms of a concussion reflect a functional disturbance rather than a structural injury. Abnormalities are not usually seen on standard structural neuroimaging.
True/False - Concussions normally result in a graded set of clinical symptoms that may or may not involve loss of consciousness.
True
*resolution follows sequential course
Concussions: True/False - No helment in any sports prevents concussion. Furthermore, mouth guards do not help prevent concussion, rather, they help to prevent dental injury
True
Concussions: Concussions are due to dysfunction of brain metabolism, not structural injury/damage. Acutely, the _____ works overtime, requiring increased amounts of ATP, and triggering a dramatic jump in glucose metabolism.
Na/K+ pump
*hypermetabolism is due to dec. cerebral blood flow *cellular energy crisis
Concussions: True/False - The resulting energy crisis is a likely mechanism for post-concussive vulnerability, making the brain less able to respond adequately to a second injury and potentially leading to longer lasting deficits.
Following the initial period of accelerate glucose utilization, the concussed brain goes into a period of depressed metabolism.
True
Concussions: A 21 year old female presents to the clinic accompanied by her coach after being hit on the head during a championship soccer match. Her coach states her athlete has complained of HA, Nausea/Vomiting, and dizziness. You note visual problems/increased sensitivity to light and noise. These are physical signs and symptoms of concussion.
What cognitive signs/symptoms could you expect to see in this patient?
a. “foggy” or slowness
b. difficulty remembering or concentrating
c. confusion
d. repeats questions or answers questions slowly
all of the above
Concussions: A 21 year old female presents to the clinic accompanied by her coach after being hit on the head during a championship soccer match. Her coach states her athlete has complained of HA, Nausea/Vomiting, and dizziness.
On PE you note visual problems/increased sensitivity to light and noise. Patient appears confused and answers questions slowly. What are emotional signs/symptoms of concussion?
-irritability -sadness -emotional -nervousness/anxiety
Concussions: A 21 year old female presents to the clinic accompanied by her coach after being hit on the head during a championship soccer match. Her coach states her athlete has complained of HA, Nausea/Vomiting, and dizziness. On PE you note visual problems/increased sensitivity to light and noise. Patient appears confused and answers questions slowly. What are sleep-related signs/symptoms of concussion?
- drowsiness
- sleeping less or more than normal
- difficulty falling asleep
Concussions: Concussion is a diagnosis of exclusion (start with ABC’s and structural/neurologic exam). On Field or Sideline Evaluations of concussion should include
- Medical evaluation
- Monitoring or Sending emergently
- No RTP on day of injury
Explain
- Must do full exam! Hx of event
- Med eval: ABC’s to rule out structural intracranial lesions
- Monitoring –monitor for initial few hours
–emergent release if change in behavior, worsening HA, repeated vomiting, double vision, excessive drowsiness or worsening symptoms
Concussions: Which of the following is a red flag for concussion?
a. neck pain or tenderness
b. double vision
c. weakness/tingling or burning sensations in the arms or legs
d. severe or increasing HA
all of the above
- *seizure or convulsion
- *loss of consciousness
- *deteriorating or conscious state
- *vomiting
- *restlessness/agitation/combative
Concussions: True/False - It is important to look for observable signs (witness or observed on video) and to perform a memeory assessment (e.g. maddocks questions). A glascow coma scale and cervical spine assessment may also be necessary.
True *px who is not lucid or fully conscious, a cervical spine injury should be assumed until proven otherwise
Concussions: Complications of brain injury include
- cervical spine injury
- skull fracture
- intracranial hemorrhage
- seizures
- post-concussion syndrome
- second impact syndrome
- chronic traumatic encephalopathy
_______occurs when an athlete sustains a second head injury while symptoms of concussion still persist after an initial injury. Athletes are at increased risk if they return to play while still recovering from an previous head injury.
Second impact syndrome
**cerebral swelling, brain herniation, death can occur
**Zack Lystedt Law: premature return to the game
Concussions: True/False - There is no FDA approved treatment for concussion or post-concussion symptoms, however, rest is important (acutely) and no return to sport on same day of injury is required.
True
*physical rest: no organized sports, no recess, no PE
*brief rest: 24-48 hours during acute phase
*encourage gradual/progressive return to physical activity (as long as it doesn’t exacerbate symptoms)
Concussions: Congitive rest involves
a. limiting use of mobile devices, TV, noisy environments
b. reduction in school work load, schedule, homework or testing restrictions
c. driving for first 24 hours
d. restriction in organized sports
A-C
Concussions: True/False - During the acute phase, both physical and cognitive rest should be recommended, followed by a graded program of exertion prior to medical clearance and RTP (return to play). Activities that require concentration and attention (and could exacerbate symptoms) may delay recovery
True
Concussions: As a general principle, OMT should not be used at the game/event or within the first 24 hours. Treatment may be used within the first 24 hours if:
a. symptoms are improving
b. symptoms are mild
c. only one reported symptom (*eg. headache)
all of the above
**ideally 24-36 hours after injury
Concussions: Review return to learn and return to play protocol
slides 44, 45
Concussions: Concussion symptoms resolve within 2 weeks in 80-90% of cases. In the remainder of cases, persistent symptoms including sleep disturbance, cognitive impairment , HA and emotional symptoms can persist. This is known as post-concussion syndrome. How is post-concussion syndrome treated?
- Treat symptoms
- No meds proven to reduce duration of symptoms
- Possibly OMT
Concussions: Which of the following accounts as evidence for use of OMT for concussion symptoms?
a. Headache
b. Dizziness
c. Visual disturbance
d. Depression
all of the above *
fatigue, balance
**don’t use in 1st 24 hours
Concussions: With OMT, the primary goal is achieving maximum function over pain relief. What OMT techniques should be avoided in concussion patients? What can be used?
- AVOID HVLA —of cervical spine (if unstable, symptomatic)
- May use OMT to:
–dec. muscle tension (cercial and upper thoracics)
–counterstrain, cranial, indirect techniques –ME if done without pain
Concussions: Increased muscle spasm during OMT indicates the patient’s tolerance has been exceeded. If the patient feels uncomfortable, stop and choose another approach, or wait and try again later.
True
Sequence:
–suboccipital release –ME OA, AA
–correct cervicothoracic
–myofascial (trapezius, levator, cervical)
Intro to Cranial: The 5 elements of the primary respiratory mechanism are:
- The _______ of the CSF
- The inherent _______ of the CNS
- The ______ of the intracranial and intra-spinal membranes and function of reciprocal tension membrane (RTM)
- The _______ Mobility of the cranial bones
- The _______ Mobility of the sacrum between the ilia
- The Fluctuation of the CSF
- The inherent Motility of the CNS
- The Mobility of the intracranial and intraspinal membranes and function of reciprocal tension membrane (RTM)
- The articular Mobility of the cranial bones
- The involuntary Mobility of the sacrum between the ilia
Fluctuation, Motility and 3 Mobility’s
Intro to Cranial: List the Midline bones
Sphenoid, Occiput, Vomer and Ethmoid bone
NOTE: Frontal is not midline because it has 2 separate ossification centers
Intro to Cranial: List the Paired Bones
Temporal and Parietal
Intro to Cranial: ______ are a site of active bone growth. They are a form of articulation characterized by the presence of a thin layer of fibrous tissue uniting the margins of the contiguous bones.
Sutures persist if there is motion and stress across them, allowing more mechanical resilience in the case of trauma to the head or from chewing forces. What are the suture landmarks?
Sutures
Landmarks:
- Bregma: coronal + sagittal
- Pterion: frontal, parietal, temporal, and sphenoid bones join
- Lambda: lambdoid + sagittal
- Asterion: parietomastoid suture (post.)
Intro to cranial: Which of the following is true about sutures?
a. active site of bone growth
b. periosteum splits into 2 layers at the suture (outer layer and inner layer/fibrous capsule)
c. forms a strong bond uniting adjacent bones while permitting slight movement
d. enables slow, progressive angulation to take place between the bones as the skull alters in shape during growth
all of the above
*allows bending strength and energy absorption (protects brain)
*b/t 2 capsules is central zone containing weak fiber bundles running in all directions, nerves and sinusoidal blood vessels
Intro to cranial: _____ is the thin membrane which encloses and adhere to the brain and spinal cord
pia mater
Intro to cranial: ______ is a gauzy, web like reticulum pervading all the spaces it occupies with a sponge like structure containing CSF
arachnoid mater
Intro to cranial: _____ is a tough, bluish-white membrane that is the outermost layer of the CNS. It has one continuous membrane (though often describes as having cranial and spinal portions)
Dura mater
-external layer: periosteum (internal and external surfaces)
–Internal layer: meningeal layer
Intro to cranial: The internal (meningeal) layer of the Dura mater surrounds the brain and comes together in 2 layers to form the
- Falx cerebri
- Tentorium cerebelli
- Falx cerebelli
THe _____ arises from the straight sinus, attaches to the frontals, parietals, occiput, and crista galli of the ethmoid bone.
falx cerebri
Intro to cranial: The intradural venous sinuses are formed via spaces/areas. These sinuses are:
- Superior/Inferior sagittal sinus
- Straight sinus
- Transverse sinus
- Sigmoid sinus
- Occipital sinus
True/False - Venous sinus drainage technique exerts its effects through dural attachments to sutures.
True
Intro to cranial: The internal (meningeal) layer of the Dura mater surrounds the brain and comes together in 2 layers to form the
- Falx cerebri
- Tentorium cerebelli
- Falx cerebelli
The ______ has two halves which originate at the straight sinus and attach to the occiput, temporals and sphenoid bone
tentorium cerebelli
Intro to cranial: The internal (meningeal) layer of the Dura mater surrounds the brain and comes together in 2 layers to form the
- Falx cerebri
- Tentorium cerebelli
- Falx cerebelli
The falx cerebelli arises inferior to the tentorium and is continuous with the spinal _____ layer. It attaches to the occiput and formen magnum
dural layer
Intro to cranial: The dura mater extends down the spinal canal with firm attachment around the _______, to the posterior aspect of the dens and body of C3, and to the posterior aspect of the body of S2 (corelink)
foramen magnum
Intro to cranial: Dural structures maintain consistent tension across the system. This is known as
Reciprocal tension membrane
*tentorium cerebelli, falx cerebri, falx cerebelli
Intro to cranial: The involuntary mobility of the sacrum between the ilia occurs via the _______. The sacrum moves in response to the SBS via the dural attachments at the forman magnum and S2 (_____)
Core Link
*At S2 = axis of nutational movement
Intro to cranial: During flexion, what happens to the:
- Greater Wing of Sphenoid
- SBS
- Core Link
- Sacral Base
- Greater wing of sphenoid flexes forward
- SBS rises
- Inc. Tension on Core Link
- Sacral Base – Superior and Post. (Counternutates)
Intro to cranial: What happens to the during extension:
- Greater Wing of Sphenoid
- SBS
- Core Link
- Sacral Base
- Greater wing of sphenoid extends upwards
- SBS drops
- Release Tension on Core Link
- Sacral Base – Anterior and Inferior (Nutates)
Intro to Cranial: There are 2 phases of Cranial Motion: Inhalation and Exhalation. Explain what happens to the following during Cranial Inhalation:
- Midline bones
- Paired bones
- Sacrum
- A-P diameter of the head
- Transverse diameter
- Midline bones: Cranial Flexion
- Paired bones: Externally rotate
- Sacrum: Counternutates
- AP diameter: Decreases (solid line - consistent volume)
- Widened Transverse diameter
Intro to Cranial: There are 2 phases of Cranial Motion: Inhalation and Exhalation. Explain what happens to the:
- Midline bones
- Paired bones
- Sacrum
- A-P diameter of the head
- Transverse diameter during Cranial Exhalation
- Midline bones: Cranial Extension
- Paired bones: Internally rotate
- Sacrum: Nutates
- AP diameter: Increases
- Narrowed Transverse diameter
Intro to Cranial: The CSF is produced chiefly by the choroid plexus. It acts as a support and buffer for the central nervous system and is vital to its metabolism.
- _______ occurs via hydrostatic forces at choroid plexuses and the arachnoid granulation.
- _______ occurs as a back and forth movement of the fluid (like the tide in the ocean) contributes to this process
- Circulation
- Fluctuation
–CSF moves in response to arterial pulse and respiration
–PRM also causes fluctuation
Intro to cranial: The inherent motility of the CNS is a subtle, slow, pulse-wavelike movement.
- It is a ______ cycle, with a rhythmic nature.
- The entire CNS _____ and thickens (coils) during one phase and legnthens and thins during the other phase.
- Biphasic cycle
- Shortens and thickens during one phase
- Lengthens and thins during other phase
*rhythm: 10-14 cycles per minute (Cranial Rhythmic pulse)
Intro to cranial: The CSF flows through the CNS creating an interchange throughout the body. This describes
Fluctuation of the CSF
Intro to cranial: The CNS moves in a slow, biphasic cycle at a rhythm of 10-14 cycles per minute called the Cranial Rhytmic impulse (CRI). This is best described as
The inherent motility of the CNS