title: Invited commentary on central hypersensitivity in patients with subacromial impingement syndrome.
abstract: Pain pressure threshold (PPT) measurement by handheld algometer has been validated as a tool to identify and quantitate myofascial pain sites in an individual. The average of 3 readings at a given muscle site is used, so the standard error of measurement of these devices must be considered when determining whether PPT differences between muscle sites represent true changes. This commentary discusses this issue.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Mayo Clinic, Jacksonville, FL, USA. dorsher.peter@mayo.edu
authors.forename: Peter T
authors.initials: PT
authors.lastname: Dorsher
mesh_terms: D005260:Female; D006801:Humans; D006930:Hyperalgesia / Q000453:epidemiology*; D008297:Male; D012047:Rehabilitation Centers; D019534:Shoulder Impingement Syndrome / Q000453:epidemiology*