"Significant compensatory sweating in relation to the level(s) of sympathetic chain division occurred in T2 alone, 45%; T2 to T3, 30%; T3 to T4, 14%; T2 to T4, 38%; and more than three levels, 49%"

Ann Thorac Surg. 2008 Feb;85(2):390-3;

http://www.ncbi.nlm.nih.gov/pubmed/18222231

The mechanisms by which sympathectomy leads to increased local bone loss is unknown

In vivo effects of surgical sympathectomy on intra... [Am J Otol. 1996] - PubMed - NCBI: "Am J Otol. 1996 Mar;17(2):343-6.

In vivo effects of surgical sympathectomy on intramembranous bone resorption.
Sherman BE1, Chole RA.
Author information
1Department of Otolaryngology--Head and Neck Surgery, School of Medicine, University of California, Davis, USA.
Abstract
Bone modeling and remodeling are highly regulated processes in the mammalian skeleton. The exact mechanism by which bone can be modeled at a local site with little or no effect at adjacent anatomic sites is unknown. Disruption of the control of modeling within the temporal bone may lead to various bone disease such as otosclerosis, osteogenesis imperfecta, Paget's disease of bone, fibrous dysplasia, or the erosion of bone associated with chronic otitis media. One possible mechanism for such delicate control may be related to the ubiquitous and rich sympathetic innervation of all periosteal surfaces. Previous studies have indicated that regional sympathectomy leads to qualitative alterations in localized bone modeling and remodeling. In this study, unilateral cervical sympathectomy resulted in significant increases in osteoclast surface and osteoclast number within the ipsilateral bulla of experimental animals. The mechanisms by which sympathectomy leads to increased local bone loss is unknown. Potential mechanisms include disinhibition of resorption, secondary to the elimination of periosteal sympathetics, as well as indirect vascular effects."