Suspected Chronic Levator Scapulae Syndrome

[nmarman]

sorry thought i replied but must not have updated

Interesting.

The first video it looks like your AC joint is popping in and out. Even through the shirt.

Do you have a visible bump above nipple to the side of the collar bone. when standing naked chest and arms hanging?

If this joint is severely unstable it would explain why you feel better when lying down. e.g. scap is stabilized when on back.

It would also potentially explain why you got worse with drugs that slow down neurological firing of muscles. as it would inhibit the control of the shoulder girdle.

The interesting investigation would be x-ray but not lying down you would have to do it under load to see the joint in a normal circumstance. The supraspinatus tendon damage just further exaggerates the shoulder girdle instability.

Have you had a standing loaded X-ray? taken