@just1morething Only from research: The amount of hearing is a key consideration. Some with hearing loss, but more without hearing loss from noise exposure can have tension issues or injury that causes muscle spasms that also can have an effect on loudness and pitch.
Research states that there must be cause valuation made if it's one ear, both, moves around, becomes centralized or increases/decreases with certain physical actions and emotional tension. It can also include bad posture and arthritis for older people. Sometimes it will include facial which can be complicated.
Without hearing loss being a main factor, physical tinnitus can have a summary with few pages if infection, facial, serious trauma/injury with domino effects, disease or degenerative conditions are not severe.
For myself, after reading thousands of physical tinnitus articles in the last year, I have only found a few articles that I feel digs beyond the cause mechanisms or just a condition like a sore neck. You have posted some and others as well. They go into exact areas with percentages. For what's it's worth, we should try to post some summary doctrine from research. Summary that does describe the exact areas with percentages of physical tinnitus cause that have some treatments. I will post some myself, but I'm just not smart enough to draw complete conclusions to difficult tinnitus matters.
From Chapter 4 Cervical Spine Trauma
Spasm of the sternocleidomastoid and trapezius. The spinal accessory nerve allows the trapezius and sternocleidomastoid to control movement. Masseter. C1 and C2 nerves. All very important.
The axis and C5-C6 is the least involved. The vertebral arch 50%. Vertebral body 30% and IVD 30%. Anterior ligaments 2%. Posterior ligaments 16%.
Facial disorder involvement 50% from other studies.
@Markku Maybe we can incorporate some percentages of major physical tinnitus into the study that you would like to conduct.