Mechanical pain sensitivity (MPS) of the back and dorsal and palmar aspects of the hand. MPS (mean ± SEM) of patients with chronic low back pain (filled circles) and healthy controls (open circles) is depicted for the paraspinal lumbar back region (b), hand palmar (hp), and dorsum of the hand (hd). Note that MPS differed between groups for all regions under investigation.
Puta et al. BMC Neurology 2012 12:98 doi:10.1186/1471-2377-12-98