I think what the researchers are saying is that excessive innervation to the AVS is the source of fibromyalgia pain. Here is the conclusion from the study.
"The excessive sensory innervation to the glabrous skin AVS is a likely source of severe pain and tenderness in the hands of FM patients..."
The underlying disease pathway in fibromyalgia is the same as in MS. Fibromyalgia and MS patients lack the enzymes that digest proteins and dietary DNA. One of the functions of these enzymes is to bind and transport vitamin B12. Just as in MS, research confirms patients with fibromyalgia are unable to properly metabolize vitamin B12. A vitamin B12 deficiency increases nerve growth factor. Here is a study on this. http://www.ncbi.nlm.nih.gov/pubmed/16352395
Excess nerve growth factor leads to excessive sensory innervation. Here is a study on this.http://www.jneurosci.org/content/19/19/8509.full.pdf
Here is a study on the increased concentrations of nerve growth factor in fibromyalgia.
J Rheumatol. 1999 Jul;26(7):1564-9.
Increased concentrations of nerve growth factor in cerebrospinal fluid of patients with fibromyalgia.
Giovengo SL, Russell IJ, Larson AA.
"The findings of increased concentrations of NGF in patients with FM suggest a central mechanism, involving abnormalities in neuropeptides such as NGF, may be a factor in the pathogenesis of FM."
Due to an inability to properly metabolize vitamin B12, patients with MS also have increased levels of nerve growth factor. http://www.ncbi.nlm.nih.gov/pubmed/1480330
To say this finding solves the fibromyalgia puzzle would be like saying it solves the MS puzzle. There are many additional valid scientific findings (and symptoms) in fibromyalgia that have nothing to do with excessive sensory innervation to the AVS.
I posted a great deal on the underlying disease process of MS on this thread. general-discussion-f1/topic22806.html