Quantitative sensory testing in painful osteoarthritis
Osteoarthritis (OA) is the most common forms of arthritis. Due to the various underlying mechanisms, there is not only one treatment that can account for this complexity.
This paper reviews the use of quantitative sensory testing (QST) in patients with osteoarthritis. QST is a non-invasive technique, which examines the somatosensory evoked responses after application of different mechanical and thermal stimuli of various controlled intensities. QST can be used in daily practice to test the involvement of central and peripheral sensitisation at a site close or remote from the site of origin.
Mechanical pressure is the most common form of QST used to assess abnormalities of somatosensory responses in people with OA.
People with OA show lower pain pressure thresholds compared to controls and this form of QST demonstrated a good ability to differentiate between people with OA and healthy controls. Lower PPT’s in people with OA both at the site of injury and in remote sites, suggest the involvement of both peripheral and central mechanisms, which may be important mediators of chronic musculoskeletal pain. > From: Suokas et al., Osteoarthritis Cartilage 20 (2012) 1075-1085. All rights reserved to Elsevier Ltd.
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