Thanks, @vdm! The Connor Harris video was very interesting, & the images of the neck/shoulder musculature are awesome plus the Anatomy Encyclopedia looks like a great resource. I’ll check out Dr. Muscolino, too.
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That is truly fascinating information, @vdm! Again, thank you for the education & for sharing these wonderful & helpful videos!
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Thanks for that VDM. Very informative.
Merl from the Modsupport Team
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A good amount of physiotherapy wisdom.
Note, that some of the specific exercises might be unsuitable for those with herniated/ruptured discs in the spine, spondylolisthesis, badly elongated styloid processes impinging blood vessels, or other health conditions:
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and
from
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Thank you again @vdm!
Basic physiotherapy (incl. neck/shoulder/core strengthening):
(https://www.facebook.com/stephanieridgwaydpt1)
(https://www.facebook.com/themovedoctor1)
Dr Joe Demiani
(https://www.facebook.com/profile.php?id=100049433626716)
E.g.
Dr Caleb Burgess
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That link is phenomenal. I love that Dr. Rdgway, adds a new dimension to many “old” PT exercises which makes them more interesting & likely more effective with less reps. Thank you, @vdm, for your research & the many links you’ve shared with us.
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American Association of Neurological Surgeons - Head and Neck Anatomy for Neurosurgeons
Also 3D version (for those who have the glasses, VR, special phone holder, or want to watch with crossed eyes).
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https://twitter.com/OGdukeneurosurg/status/1774264062966132750
https://twitter.com/OGdukeneurosurg/status/1774223329353687389
https://twitter.com/OGdukeneurosurg/status/1774223341252944192
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More great resources to help us understand our physical blueprints! These are really great images. Thank you!
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And the channel of Kevin Tokoph:
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According to this video,
C0/C1 flexion is 10°, extension 17°
C0/C7 flexion is 64°, extension 63°
Which means 27/127 ~= 21% of the whole neck flexion/extension happens at the C0/C1 level.
Might be accurate, though other sources mention up to 50% (https://www.physio-pedia.com/Cervical_Vertebrae).
Other sources mention these numbers:
The cervical spine’s range of motion is approximately 80° to 90° of flexion, 70° of extension, 20° to 45° of lateral flexion
Normal flexion to hyperextension at the atlanto-occipital [C0/C1] joint ranges from approximately 15° to 20°
Normal cervical flexion is usually approximately 80º. […] Normal cervical extension is usually 50°. Total range of cervical motion from full flexion to full extension should be 130°
Cervical Lateral Flexion […] Normal flexion from starting point on either side is 45° and the total angle of maximal lateral head flexion should be 90°
https://www.ajronline.org/doi/pdf/10.2214/ajr.130.2.317
(offline copy: ajr.130.2.317.penning-1978-normal-movements-of-the-cervical-spine.pdf (1.3 MB) )
Now, this is getting interesting. It seems C1/C2 also may have significant flexion/extension range.
I will leave it here.
Also, this in particular demonstrates the (approximated) C0/C1 motion
The whole neck flexion/extension
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Interesting to see the degrees of movement of the various cervical vertebra pairs. The videos are amazing! I remember seeing the video of the range of motion of the full spine previously but the two new videos are great also.
This physiotherapist recently published a few videos about jaw movement issues (and how to try to fix them).
No endorsement, but personally I found them worth watching, and logically thinking from the muscular perspective, it seems they might help in some TMJD or muscular imbalance cases (that can be present with Eagle’s syndrome).
I have been thinking since long ago, whether my former habits to sit at the desk leaning on it and supporting myself from one side with arm against my jaw could have contributed to some of the symptoms.
Like in this pic
Same for sleeping preferences.
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Would agree with jaw contribution as well @vdm, i think generally any form of asymmetric posture will cause compensation patterns leading to all sorts of problems
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I also agree w/ your thoughts & have found myself leaning on my left arm a lot while at the computer. My left shoulder is now complaining so I’ve changed my posture to a more symmetrical position but find myself leaning on my left arm again from time to time. Old habits die hard!! 
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