No, I wasn’t mistaken about the Latissimus dorsi innervation; I wouldn’t post anything that I wasn’t reasonably certain about. Those muscles that you listed are the most COMMON ones affected, there are about 10 others. Sometimes when researching you need to dig a little deeper. Its a shared innervation between C6-7-8.
Thoracodorsal Nerve
Nerve Origin: C6, C7, C8 roots, arising as a branch from the posterior cord
Muscles Innervated: Latissimus Dorsi (Motor Nerve)
The nerve supply to this muscle is the Thoracodorsal nerve which carries the spinal nerve root fibers of the C6, C7 and C8 nerve roots.
Motor nerves: These are the nerves which are supplied from the brain and spinal cord to the muscles and the glands to perform a function; they are used in contracting and relaxing the muscles to perform certain specified functions.
What ever the problem is, I hope you get it straighten out and I hope you feel better.
http://classes.kumc.edu/sah/resources/handkines/nerves/c6.htm
http://www.ganfyd.org/index.php?title=Thoracodorsal_nerve
http://www.neckpainsupport.com/2009/11/c6discherniation.html
I appreciate your comment but I think you are mistaken about the nerve root involved. I have researched this extensively and a C5-6 disc impinging on the nerve root should cause symptoms in the pectorals, biceps, deltoids, and brachiodorsalis. It would be impingement by one of the two lower discs the C6-7 or C7-T1 disc which would give you symptoms in the lats. And I don't have any problems noted at those levels. It would be a lot simpler problem if I did. Thanks anyway.
Spinal hemangiomas are benign tumors and symptomatic vertebral hemangiomas are very rare and represent <1% of all hemangiomas. Although, they'll bear watching and your probably going to want to discuss this finding at length with your Neurologist, but theres's a good chance its not causing any symptoms.
And the Latissimus Dorsi receive their motor Innervation through the Thoracodorsal Nerve which is supplied from the C6, C7, C8 roots. C5-6 = C6 nerve root.
Take Care