@weab00 Vertebral artery from injury such as from whiplash would relate to pulsatile tinnitus, but most likely one needs to have severe headaches.
Discussion:
It is presently considered a problem when there is mechanical compression during head rotation due to muscular and tendinous insertions, osteophytes, and arthritis around the C1-C2 level. As the vertebral arteries enter the vertebrae around C4, it can also occur at lower levels. As about 50% of c spine rotation occurs around C1, this is likely the reason for the predominance at this level. Araz Server et al (2018) reported reduced flow in the ipsilateral vertebral artery when the head was both hyperextended and rotated.
Occasionally vertebral artery dissections occur, sometimes in a delayed fashion, after a whiplash injury.
Additionally, flexion-extension injuries to the neck, usually associated with an auto accident involving a rear end collision has also been reported to be associated with asymmetrical vertebral artery flow as documented by sophisticated MRA (Kendo et al, 2006). The significance of this observation is presently unclear, but again the suggested mechanism is stretching of the upper portions of the vertebral arteries. Neck injuries have increased in the US in recent years with auto accidents, presumably due to interaction between use of seat-belts and chest restraints. While chest restraints reduce the risk of death, mechanically by restraining the trunk, they can be associated with greater relative movement of the unrestrained head on neck due to simple biomechanics involving momentum transfer.
Whiplash is simply a description of the mechanism of a neck injury. Whiplash might cause cervical "vertigo" in diverse ways, including proprioceptive injury, or injury to the cervical spinal cord. Whiplash is not a subcategory of "proprioception", as suggested by Devaraja (2018) in his review.
http://www.dizziness-and-balance.com/disorders/central/cervical/cervical.html
The
vertebral arteries are major
arteries of the neck. Typically, the vertebral arteries originate from the
subclavian arteries. Each vessel courses superiorly along each side of the neck, merging within the skull to form the single, midline
basilar artery. As the supplying component of the
vertebrobasilar vascular system, the vertebral arteries supply blood to the upper
spinal cord,
brainstem,
cerebellum, and
posterior part of brain.
[1]
https://en.wikipedia.org/wiki/Vertebral_artery
There's many other articles and studies that connect the vertebral arteries and subclavian arteries to whiplash causing pulsatile tinnitus. Radiological exams needed and treatments are discussed. Pulsatile tinnitus can happen from this when tinnitus is already present as the brain and ears are on alert.